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The pursuit of p-type semiconductors has garnered considerable attention in academia and industry. Among the potential candidates, copper iodide (CuI) stands out as a highly promising p-type material due to its conductivity, cost-effectiveness, and low environmental impact. CuI can be employed to create thin films with >80% transparency within the visible range (400–750 nm) and utilizing various low-temperature, scalable deposition techniques. This review summarizes the deposition techniques for CuI as a hole-transport material and their performance in perovskite solar cells, thin-film transistors, and light-emitting diodes using diverse processing methods. The preparation methods of making thin films are divided into two categories: wet and neat methods. The advancements in CuI as a hole-transporting material and interface engineering techniques hold promising implications for the continued development of such devices. [ABSTRACT FROM AUTHOR]

Copper iodide (CuI) has garnered considerable attention as a promising alternative to p‐type transparent conducting oxides owing to its low cation vacancy formation energy, shallow acceptor level, and readily modifiable conductivity via doping. Although sulfur (S) doping through liquid iodination has exhibited high efficacy in enhancing the conductivity with record high figure of merit (FOM) of 630 00 MΩ−1, solution‐processed S‐doped CuI (CuI:S) for low‐cost large area fabrication has yet to be explored. Here, a highly conducting CuI:S thin‐film for p‐type transparent conducting electrode (TCE) is reported using low temperature solution‐processing with thiourea derivatives. The optimization of thiourea dopant is determined through a comprehensive acid‐base study, considering the effects of steric hindrance. The modification of active groups of thioureas facilitated a varying carrier concentration range of 9 × 1018–2.52 × 1020 cm−3 and conductivities of 4.4–390.7 S cm−1. Consequently, N‐ethylthiourea‐doped CuI:S exhibited a FOM value of 7 600 MΩ−1, which is the highest value among solution‐processed p‐type TCEs to date. Moreover, the formulation of CuI:S solution for highly conductive p‐type TCEs can be extended to CuI:S inks, facilitating high‐throughput solution‐processes such as inkjet printing and spray coating. [ABSTRACT FROM AUTHOR]

A highly efficient, heterogeneous copper(I)-catalyzed aerobic oxidation of primary aliphatic, allylic, propargylic and benzylic alcohols to aldehydes has been achieved under open-air and base-free conditions in MeCN at room temperature in the presence of 3 mol% of 1,1-di(pyridin-2-yl)urea-functionalized SBA-15-anchored copper iodide complex [Dpu-SBA-15-CuI] and 4 mol% of TEMPO, delivering a wide range of the corresponding aliphatic, α,β-unsaturated and aromatic aldehydes in good to excellent yields. This new heterogeneous copper(I) complex can be easily prepared via a simple procedure from readily available and inexpensive reagents and recycled at least ten times without any remarkable loss of activity. The use of reusable copper catalyst and air as the oxidant, as well as mild and base-free conditions make this protocol attractive for environmentally sustainable processes. A highly efficient, heterogeneous copper(I)-catalyzed aerobic oxidation of primary aliphatic, allylic, propargylic and benzylic alcohols to aldehydes under open-air and base-free conditions is described. [ABSTRACT FROM AUTHOR]

The photoluminescence (PL) of cuprous iodide (CuI) has drawn significant attention in the scientific community. In order to investigate the growth methods and environmental conditions on the fluorescence, we first prepared CuI via immersion of copper in hydroiodic acid. This method is beneficial for the growth of large grains (> 20 μm) with intensive red fluorescence emission at 708 nm. The fluorescence has a high quantum yield (34 %), and superior stability. Then we studied the fluorescence behaviors in water. We observed fluorescence quenching, which is due to the energy transfer. Additionally, we studied the effect of temperature on the fluorescence. We found that the fluorescence intensity increased initially then decreased as the temperature increased. The underlying mechanism was analyzed in terms of fluorescence quencher (water) removal and thermal quenching. By controlling heating, we successfully obtained intensive and pure red fluorescence. Finally, we explored the potential application of the red fluorescent of CuI in optical communication. The results demonstrate bit error rates within permissible range of forward error correction, highlighting the superior performance of CuI in optical communication systems. [ABSTRACT FROM AUTHOR]

All-inorganic cesium copper halide nanocrystals have attracted extensive attention due to their cost-effectiveness, low toxicity, and rich luminescence properties. However, controlling the synthesis of these nanocrystals to achieve a precise composition and high luminous efficiency remains a challenge that limits their future application. Herein, we report the effect of oleylammonium iodide on the synthesis of copper halide nanocrystals to control the composition and phase and modulate their photoluminescence (PL) quantum yields (QYs). For CsCu2I3, the PL peak is centered at 560 nm with a PLQY of 47.3%, while the PL peak of Cs3Cu2I5 is located at 440 nm with an unprecedently high PLQY of 95.3%. Furthermore, the intermediate-state CsCu2I3/Cs3Cu2I5 heterostructure shows white light emission with a PLQY of 66.4%, chromaticity coordinates of (0.3176, 0.3306), a high color rendering index (CRI) of 90, and a correlated color temperature (CCT) of 6234 K, indicating that it is promising for single-component white-light-emitting applications. The nanocrystals reported in this study have excellent luminescence properties, low toxicity, and superior stability, so they are more suitable for future light-emitting applications. [ABSTRACT FROM AUTHOR]

To tailor electrical properties of often degenerate pristine CuI, Ni is introduced as alloy constituent. Cosputtering in a reactive, but also in an inert atmosphere as well as pulsed laser deposition (PLD), is used to grow NixCu1−xI$\left(\text{Ni}\right)_{x} \left(\text{Cu}\right)_{1 - x} \text{I}$ thin films. The Ni content within the alloy thin films is systematically varied for different growth techniques and growth conditions. A solubility limit is evidenced by an additional NiI2(H2O)6$\left(\text{NiI}\right)_{2} \left(\left(\text{(H}\right)_{2} \text{O)}\right)_{6}$ phase for Ni contents x≥0.31$x \geq 0.31$, observed in X‐Ray diffraction and atomic force microscopy by a change in surface morphology. Furthermore, metallic, nanoscaled nickel clusters, revealed by X‐Ray photoelectron spectroscopy and high‐resolution transmission electron microscopy (HRTEM), underpin a solubility limit of Ni in CuI. Although no reduction of charge carrier density is observed with increasing Ni content, a dilute magnetic behavior of the thin films is observed in vibrating sample magnetometry. Further, independent of the deposition technique, unique multilayer features are observed in HRTEM measurements for thin films of a cation composition of x≈0.06$x \approx $. Opposite to previous claims, no transition to n‐type behavior was observed, which was also confirmed by density functional theory calculations of the alloy system. [ABSTRACT FROM AUTHOR]

Starting from readily available enantiopure azidomethyl‐substituted bicyclic 1,2‐oxazine derivatives and mono‐, di‐ or trialkynes, their copper‐catalyzed (3+2) cycloadditions furnished a series of 1,2,3‐triazolyl‐linked compounds in good yields. These click reactions proceeded smoothly at room temperature when copper iodide as catalyst was used in the presence of triethylamine and tris[(1‐gbenzyl‐1H‐1,2,3‐triazol‐4‐yl)methyl]amine as ligand. Generally, the unprotected bicyclic 1,2‐oxazine derivatives seemed to show slightly higher reactivity and provided better yields compared with their silyl‐protected counterparts. Exhaustive hydrogenolysis with cleavage of the 1,2‐oxazine N−O bonds in the presence of palladium on charcoal as promotor is feasible but was found to be capricious. Reasonable results were obtained when acetic acid was employed as cosolvent. By applying these conditions, several of the bicyclic 1,2‐oxazine derivatives were successfully converted into the expected mono‐ or divalent aminooxepine derivatives which can be regarded as aminoseptanose mimetics. [ABSTRACT FROM AUTHOR]

Low-voltage electric double layer p-type thin film transistors (TFTs) were fabricated on glass substrates with copper iodide doped with potassium iodide (Cu0.95K0.05Ix) as the channel and chitosan as the dielectric. Cu0.95K0.05Ix TFTs exhibited Ion/Ioff ratio of 2.5 × 104, subthreshold swing of 30 mV/dec, threshold voltage of 1.34 V, operating voltage of 2 V, and saturation field-effect mobility of 16.6 cm2 V−1 s−1. The relaxation phenomenon induced by ion migration was effectively utilized, enabling Cu0.95K0.05Ix TFTs to simulate various synaptic plasticity functions. When a pulse is applied, the drain current reaches a peak, but it takes more time for the current to return to its equilibrium position after the pulse is removed, demonstrating the short-term memory (STM) characteristics of Cu0.95K0.05Ix TFT. It was observed an increasing trend in excitatory postsynaptic current (EPSC) with enhanced pulse width and amplitude, and when the pulse amplitude increased to −10 V, the TFT transitioned from STM to long-term memory characteristics. Furthermore, the measurement of consecutive EPSC revealed the paired-pulse facilitation (PPF) characteristics, with a gradual decrease in the PPF coefficient as the time interval increased, and a selective stronger response to high-frequency signals. Based on the aforementioned research, by extending the device structure to a dual in-plane-gate structure configuration and applying different pulse voltage sequences on the dual gate, the NOR logic functionality was achieved. The study demonstrates the significant potential of p-type Cu0.95K0.05Ix TFTs in the field of synaptic bionics, simulating human learning and memory, and neural chips. [ABSTRACT FROM AUTHOR]

As a new inorganic lead‐free perovskite, cesium copper iodide (CsCu2I3) has attracted wide attention in the field of photodetectors due to its non‐toxicity, good air and thermal stability, and excellent optoelectronic properties. However, the random growth and disordered distribution of CsCu2I3 crystals during their preparation results in poor crystal quality, seriously limiting their applications. Highly ordered CsCu2I3 crystal formation with high crystal quality for high‐performance photodetectors remains a major challenge. Here, an ingenious nanoimprinting technology is utilized to obtain high‐performance photodetectors based on highly aligned CsCu2I3 nanowires (NWs). Owing to the high crystal quality, the photodetector exhibits excellent responsivity of 12.35 A W−1 (310 nm) and 89.73 mA W−1 (365 nm), respectively, as well as good polarization light detection with a dichroism ratio of up to 2.28. Additionally, the device on a flexible substrate retains its initial level of performance even after being bent 2000 times. Remarkably, the device exhibits superior stability and maintains excellent performance after being placed in the natural environment for 1 month without any encapsulation. [ABSTRACT FROM AUTHOR]

In recent years, tin halide perovskite solar cells (PKSCs) have emerged as a promising alternative to lead‐PKSCs. However, due to defects such as Sn4+ and iodide vacancies, their efficiency is lower than lead‐PKSCs. To address this issue, various strategies are proposed to improve the quality of perovskite, including copper iodide (CuI) doping. Unfortunately, the conventional solvent composition of DMF:DMSO = 4:1 has limited the solubility of CuI, resulting in inconsistent results and limited efficiency improvements. However, this research proposed a preprocessing method of CuI to decrease the defects and improve the perovskite layer's morphology. As a result, the efficiency of tin‐PKSCs with both P‐I‐N and hole transport layer (HTL) free structures is enhanced, increasing from 9.8% to 13.1% and 9.4% to 10.5%, respectively. Moreover, the doped tin‐PKSCs have exhibited better stability, retaining 75% of their initial power conversion efficiency (PCE) after being stored in a glovebox for 102 days. [ABSTRACT FROM AUTHOR]

A novel copper iodide hybrid compound, (DABCO-H)CuKI3, featuring a perovskite structure is here reported. Characterization techniques, including single crystal X-ray diffraction, X-ray photoelectron spectroscopy (XPS), and photoluminescence studies, elucidate the structural and luminescent properties. The compound exhibits blue phosphorescence, attributed to mixed metal-to-ligand and halide-to-ligand charge transfer transitions, as supported by density functional theory (DFT) calculations and XPS valence band analysis. Furthermore, (DABCO-H)CuKI3 displays a remarkable adsorption capacity towards methylene blue dye. Kinetic modelling reveals that both film and intra-particle diffusion processes contribute to the adsorption rate. [ABSTRACT FROM AUTHOR]

Perovskite solar cells came to limelight owing to their simple fabrication processes, cost-effectiveness, better optoelectronic characteristics and outstanding power conversion efficiencies (PCEs). These solar cells have simply outpaced their rival cells since the alteration from aqueous hole transport layers (HTLs) to solid HTLs. Various layers of a perovskite cell viz. light absorber layer, electron transport layer (ETL) and HTL play a decisive role in ascertaining its performance. Today, various types of organic and inorganic HTLs are available but inorganic HTLs have gained an upper hand over their organic counterparts in terms of stability, cost, fabrication and material properties which represent them as a prospective candidate for optimum perovskite device. Copper antimony sulfide (CuSbS 2) is a common HTL available in abundance with the benefit of an adequate bandwidth of 1.54 eV. In addition, CuSbS2 possesses substantial band aligning and electron inhibiting features. This research paper elaborates a relative study of two perovskite solar devices possessing discrete inorganic hole transport layers, i.e., cuprous iodide (CuI) and copper antimony sulfide (CuSbS 2) , and discrete perovskite layers, i.e., MAPbI 3 − x Cl x and MASnI3, using the same negative charge transport layer, i.e., Cd 1 − x Zn x S, through numerical simulation employing SCAPS-1D. The effects of thickness, defect density and doping concentration with respect to absorbing layer on the efficiency and other parameters of perovskite layers are also discussed. By employing CuSbS2 with MASnI3 in the proposed device, the solar cell parameters are efficacious enough demonstrating the V oc of 1.10 V, PCE of 31.11%, fill factor (FF) of 83.05% and J sc of 33.75 mA ⋅ cm − 2 . A comparative analysis using SCAPS 1D software is carried out between two different HTLs, i.e., CuI and CuSbS2; between two different perovskite layers, i.e., CH3NH3PbI3–xClx and CH3NH3SnI3, exploiting the same ETL, i.e., Cd1–xZnxS. Power conversion efficiency, fill factor, short circuit current density and open circuit voltage of the proposed device are characterized by thickness, doping concentrations and interfacial defect density. By integrating CuSbS2 with CH3NH3SnI3 in the proposed cell, the outcome received is of high calibre as compared to the outcome of the existing one. [ABSTRACT FROM AUTHOR]

The paper presents the fabrication and characterization of [CuI(L)][sub n] thin films, where L represents various alkylpyridine ligands including 4-methylpyridine, 3-methylpyridine, 2-methylpyridine, 4-[sup t]butylpyridine, 3,4-dimethylpyridine, and 3,5-dimethylpyridine. The thin films were synthesized by exposing the corresponding ligands to CuI thin films through vapor deposition. The coordination reactions occurring on the films were investigated using PXRD and time-dependent photoluminescence spectroscopy, and a comparison was made between the structures of the thin films and the corresponding powder phases. The films showed primarly blue emission (λem = 457-515 nm) and polymeric structures with excited state lifetimes ranging from 0.6 to 5.5 μs. Significantly, the studied compounds exhibited fast reversible luminescence quenching when exposed to vapors of dichloromethane and dibromomethane (15 and 30 min respectively), and the luminescence was restored upon reexposure to the alkylpyridine ligand (after 20 min). These findings indicate that these thin films hold promise for applications as sensors (with sensitive and reversible detection capability) for volatile halogen-based compounds (VHC). [ABSTRACT FROM AUTHOR]

Three copper iodide coordination polymer (CuI-p-DPA) isomers were prepared from the fluorescent organic ligand p-DPA and cuprous iodide (CuI) under different solvothermal conditions, which exhibited quenched fluorescence behaviors after forming coordination polymers (CPs). These CuI-p-DPA isomers showed discrepant fluorescence responses to thiophanate-methyl (TM). Among these CuI-p-DPA isomers, α-CuI-p-DPA exhibited the maximum fluorescence enhancement after its incubation with TM in aqueous solution. The fluorescence enhancement mechanism was that TM competed with the ligand p-DPA to coordinate with CuI clusters, and then α-CuI-p-DPA released p-DPA into the solution and induced fluorescence enhancement. The present detection method possesses the advantages of good selectivity, high sensitivity, short response time, and strong anti-interference ability with a linear range of 0.5–100 μM and a detection limit of 0.01 μM. This study not only reveals that the spatial structures of CPs play an important role in the fluorescence response ability, but also provide a new fluorescence signal-on analysis method to rapidly and sensitively determine the pesticide residue for TM. [ABSTRACT FROM AUTHOR]

[Display omitted] Storage of volatile active molecules, along with the prolongation of their specific functions, requires the use of regulatable carriers. Pyrazine derivatives are highly volatile compounds with a broad application owing to their flavoring, pharmaceutical, antimicrobial, antiseptic, and insecticidal properties. In this study, pyrazines were stored by coordinating them with cuprous iodide to easily generate a series of luminescent coordination polymer (CP)-based carriers. The CPs could respond to thermal-redox stimuli and manipulate pyrazine release by breaking the labile Cu–N bonds when triggered by the two stimuli. Moreover, the release process could be visualized by decreased luminescence caused by the gradual decomposition of CP structures. The loading efficiencies ranged from 31% to 38%, and the controlled release behaviors accord with the zero-order kinetics. This work is the first to prove that CPs could function as dual stimuli-mediated delivery systems, which hold the potential to control the release and strengthen the usability of functional molecules. [ABSTRACT FROM AUTHOR]

The long‐term stability of the optically transparent p‐type semiconductor copper iodide is a current challenge. The electrical conductivity of CuI thin films depends critically on the environmental impact. Al2O3 cappings enhance the stability considerably. Systematic studies on Al2O3/CuI heterostructures in dependence of the N2/O2 growth pressure show the electrical conductivity of the CuI films being determined by the oxygen diffusion through Al2O3 und CuI. Oxygen seems to be a dominating acceptor in CuI. We traced the diffusion of atmospheric oxygen into CuI with 18O isotopes. [ABSTRACT FROM AUTHOR]

Five novel 'all-in-one' (AIO) structured cuprous iodide coordination materials 1–5 are presented. With the introduction of planar aromatic groups on the ligand, 1,4-diazabicyclo[2.2.2]octane (DABCO), targeted at eliminating stronger π–π interactions through the twisted nature of the latter species, the complexes displayed good stability, solubility, and high quantum yields of emissions ranging from 70.3–95.3%. Further systematic studies were performed on the relationship between their luminescence and modification of the ligands with halogen atoms. This work provides a reasonable idea for designing luminescent cuprous iodide materials with high quantum yields of emission for use in solid-state lighting in the future. [ABSTRACT FROM AUTHOR]

The Lewis base-supported uranium terminal imido metallocene [η5-1,2,4-(Me3Si)3C5H2]2UvN(p-tolyl) (dmap) (1) readily reacts with various small molecules such as internal alkynes, isothiocyanates, thioketones, amidates, organic nitriles and imines, chlorosilanes, copper iodide, diphenyl disulfide, organic azides and diazoalkane derivatives. For example, treatment of 1 with PhCuCCuCPh and PhNCS forms metallaheterocycles originating from a [2 + 2] cycloaddition to yield [η5-1-(p-tolyl)NC(Ph)vCHCvC(Ph) CH2Si(Me)2-2,4-(Me3Si)2C5H2][η5-1,2,4-(Me3Si)3C5H2]U (2) and [η5-1,2,4-(Me3Si)3C5H2]2U[N(p-tolyl)C (vNPh)S](dmap) (3), respectively. The reaction of 1 with the thioketone Ph2CS forms the known uranium sulfido complex [η5-1,2,4-(Me3Si)3C5H2]2US(dmap) (4), which reacts with a second molecule of Ph2CS to give the disulfido compound [η5-1,2,4-(Me3Si)3C5H2]2U(S2CPh2) (5). The imido moiety also promotes deprotonation reactions as illustrated in the reactions with the amide PhCONH(p-tolyl), the nitrile PhCH2CN and the imine (p-tolyl)2CvNH to form the bis-amidate [η5-1,2,4-(Me3Si)3C5H2]2U[OC(Ph)N(ptolyl)] 2 (7), and the iminato complexes [η5-1,2,4-(Me3Si)3C5H2]2U[N(p-tolyl)C(CH2Ph)vNH](NvCvCHPh) (8) and [η5-1,2,4-(Me3Si)3C5H2]2U[NH(p-tolyl)][NvC(p-tolyl)2] (9), respectively. Addition of PhSiH2Cl to 1 yields [η5-1,2,4-(Me3Si)3C5H2]2U(Cl)[N(p-tolyl)SiH2Ph] (10). In contrast, the uranium(V) imido complexes [η5-1,2,4-(Me3Si)3C5H2]2UvN(p-tolyl)(I) (11) and [η5-1,2,4-(Me3Si)3C5H2]2UvN(p-tolyl)(SPh) (12), may be isolated upon addition of CuI or Ph2S2 to 1, respectively. Uranium(VI) bis-imido metallocenes [η5-1,2,4-(Me3Si)3C5H2]2UvN(p-tolyl)(vNR) (R = p-tolyl (13), mesityl (14)) and [η5-1,2,4-(Me3Si)3C5H2]2UvN(ptolyl)[ vNNv(9-C13H8)] (15) are accessible from 1 on exposure to RN3 (R = p-tolyl, mesityl) and 9-diazofluorene, respectively. Complexes 2, 3, 5, and 7-15 were characterized by various spectroscopic techniques and, in addition, compounds 2, 3, 5, and 7-13 were structurally authenticated by single-crystal X-ray diffraction analyses. [ABSTRACT FROM AUTHOR]

Chiral hybrid Cu(I)‐based iodides with d10 closed shell demonstrate great potential for circularly polarized luminescence (CPL) because of high photoluminescence quantum yield (PLQY). Herein, by incorporating mono‐ or bi‐dentate coordination mode ligands as chiral source, the self‐assembly of four pairs of chiral hybrid Cu(I)‐based iodides, namely, (R/S)‐Cu4I4(Hmpy)4·H2O (R/S‐1), (R/S)‐Cu4I4(3Hpy)4 (R/S‐2), (R/S)‐Cu4I4(2MePI)4 (R/S‐3), and (R/S)‐Cu4I4(3AD)4 (R/S‐4) (where R/S‐Hmpy = R/S‐2‐pyrrolidinemethanol, R/S‐3Hpy = R/S‐3‐hydroxypyrrolidine, R/S‐2MePI = R/S‐2‐methylpiperazine, and R/S‐3AD = R/S‐3‐aminopiperidine), are reported. With the monodentate and bidentate ligands, these materials belong to two different structural types: 0D molecular clusters (R/S‐1, R/S‐2) and 3D porous metal–organic frameworks (R/S‐3, R/S‐4). These materials all crystallize in non‐centrosymmetric space groups containing similar basic Cu4I4 cubane tetramer building units but with different coordination modes. They are also semiconductors, with optical bandgaps ranging from 2.70 to 2.94 eV. The photoluminescence (PL) and circularly polarized luminescence (CPL) emissions are further characterized, where the highest PLQY of ≈95% and CPL dissymmetry factor (glum) of ≈7 × 10−3 are achieved in R/S‐1. This work offers a systematic comparison between different structural types with similar building blocks, bridging by the flexible chiral ligands, and shows that the hybrid copper iodides are highly promising candidates for next‐generation optoelectronics and chiroptics. [ABSTRACT FROM AUTHOR]

X‐ray imaging technology has achieved important applications in many fields and has attracted extensive attentions. Dynamic X‐ray flexible imaging for the real‐time observation of the internal structure of complex materials is the most challenging type of X‐ray imaging technology, which requires high‐performance X‐ray scintillators with high X‐ray excited luminescence (XEL) efficiency as well as excellent processibility and stability. Here, a macrocyclic bridging ligand with aggregation‐induced emission (AIE) feature was introduced for constructing a copper iodide cluster‐based metal–organic framework (MOF) scintillator. This strategy endows the scintillator with high XEL efficiency and excellent chemical stability. Moreover, a regular rod‐like microcrystal was prepared through the addition of polyvinyl pyrrolidone during the in situ synthesis process, which further enhanced the XEL and processibility of the scintillator. The microcrystal was used for the preparation of a scintillator screen with excellent flexibility and stability, which can be used for high‐performance X‐ray imaging in extremely humid environments. Furthermore, dynamic X‐ray flexible imaging was realized for the first time. The internal structure of flexible objects was observed in real time with an ultrahigh resolution of 20 LP mm−1. [ABSTRACT FROM AUTHOR]

X‐ray imaging technology has achieved important applications in many fields and has attracted extensive attentions. Dynamic X‐ray flexible imaging for the real‐time observation of the internal structure of complex materials is the most challenging type of X‐ray imaging technology, which requires high‐performance X‐ray scintillators with high X‐ray excited luminescence (XEL) efficiency as well as excellent processibility and stability. Here, a macrocyclic bridging ligand with aggregation‐induced emission (AIE) feature was introduced for constructing a copper iodide cluster‐based metal–organic framework (MOF) scintillator. This strategy endows the scintillator with high XEL efficiency and excellent chemical stability. Moreover, a regular rod‐like microcrystal was prepared through the addition of polyvinyl pyrrolidone during the in situ synthesis process, which further enhanced the XEL and processibility of the scintillator. The microcrystal was used for the preparation of a scintillator screen with excellent flexibility and stability, which can be used for high‐performance X‐ray imaging in extremely humid environments. Furthermore, dynamic X‐ray flexible imaging was realized for the first time. The internal structure of flexible objects was observed in real time with an ultrahigh resolution of 20 LP mm−1. [ABSTRACT FROM AUTHOR]

We report on photoluminescence emission in copper iodide bulk single crystals induced by two- and three-photon absorption around 1.525 eV. These non-linear optical processes are investigated utilizing density-dependent, steady-state, as well as time-resolved photoluminescence spectroscopy as a function of the excitation energy. Using an excitation energy that corresponds to half of the bandgap energy, the observed photoluminescence intensity dependence on the excitation power shows an almost parabolic behavior. By further reduction of the photon energy, a cubic contribution is observable, which increases with decreasing excitation energy. The experimentally observed behavior can be well described by taking into account two- and three-photon absorption. By a simultaneous analysis of the intensity behavior for all used excitation energies, we determined a ratio between the two- and three-photon absorption cross section on the order of σ 0 (3) / σ 0 (2) ≈ 10 − 28 cm 2 s. [ABSTRACT FROM AUTHOR]

Cyclotribenzylenes (CTBs) combining carbonitrile (−CN) and alkyne (−C2H) substituents were synthesized as racemic mixtures and resolved by HPLC on chiral stationary phases. Two of these compounds were used to prepare platinum‐bridged CTB dimers, in which PtII is bound to the CTBs via Pt−alkynyl bonds in cis configuration. The organometallic complexes were examined by mass spectrometry and NMR spectroscopy, which indicated that they were obtained as mixtures of diastereoisomers (a meso or syn form and a pair of chiral or anti forms) when racemic CTBs were used. Enantiomerically pure complexes were prepared from resolved CTBs, which allowed us to distinguish the NMR signals of the chiral and meso forms in the diastereoisomeric mixtures. In certain conditions, the platinum complexes played the role of a pincer π‐alkynyl ligand for Cu(I) coming from the copper iodide used as a synthetic auxiliary. The Cu+ cations could be easily removed by treatment with NaCN, affording the mononuclear bis‐cyclotribenzylene complexes. These compounds failed to lead to metallo‐cryptophanes by coordination of two [M(dppp)]2+ complex subunits (M=Pd, Pt; dppp=1,3‐bis(diphenylphosphino)propane), each to two carbonitrile substituents belonging to different CTBs, pointing to the superiority of the one pot self‐assembly processes for the preparation of metallo‐cryptophanes. [ABSTRACT FROM AUTHOR]

A simple, fast, green and cost-effective method is designed for the synthesis of copper iodide nanoparticles (CuI-NP) for spectroscopic detection of cancer biomarker, carbohydrate antigen 19-9 (CA 19-9). Results of UV-visible spectroscopy establish the efficacy of prepared CuI-NP to sense CA 19-9 in serum medium even at its low concentration (~ 0.066 U/mL). Our study reveals that γ-irradiated (24 h) copper iodide nanoparticles (CuI-NP-γ) have higher sensitivity towards CA 19-9 sensing due to their higher surface activity and charged nature as compared to CuI-NP. CuI-NP-γ could deliver higher signal enhancement and was able to lower the limit of detection (LOD) of CA 19-9 from 0.082 to 0.066 U/mL. Results also indicate that in presence of high concentration of glucose, cholesterol, bilirubin and insulin, which cause pathophysiological disorders like diabetes, hypercholesterolemia, hepatic disorder, hyperinsulinemia, etc., the LOD is even lower (0.037, 0.034, 0.157, 0.029 U/mL respectively). The interaction between the biomarker and the NPs were further established using fluorescence and circular dichroism spectroscopy. The specificity of sensing was tested by checking the response in presence of other biomarkers, like CEA and CA-125 which did not show any signal enhancement with CuI-NP-γ. [ABSTRACT FROM AUTHOR]

Copper iodide (CuI) thin films were prepared on a glass substrate by a facile high pressure (HP)‐PECVD method at room temperature. For this, CuI powder was dissolved in CH3CN. The CuI vapor with plasma was investigated by Optical Emission Spectroscopic (OES) data for identifying the species in the plasma. The XRD study reveals the polycrystalline nature of the films. The SEM analyses indicate the homogeneity of the films. The EDS mapping confirms that the thin films mostly consisted of carbon followed by nitrogen, copper and iodine, respectively. The band gaps of CuI thin films were in the range of ~2.71–3.14 eV. The high transmittance and band gap engineering in HP‐PECVD‐synthesized CuI thin films indicates their potential use as window and hole transport layers in low cost solar cells. [ABSTRACT FROM AUTHOR]

Nonradiative decays of surface plasmon (SP) can generate photocarriers in femtosecond, and it therefore has been attracting widespread research attention in ultrafast optoelectronics. Taking advantage of the probe technique, Kelvin probe force microscopy (KPFM) can characterize the spatial distribution of hot carriers in nanoscale and thereby provide necessary analysis for device investigation and engineering. In this work, the behavior of plasmonic hot holes is demonstrated for Ag nanoparticles (NPs) based on the fabrication of CuI hole transport layers. The morphological, optical, and electronic properties of Ag NPs and CuI films are systematically investigated. With the confocal lasers of over‐ and sub‐bandgap wavelength, reversed evolution trends of surface potentials are observed by KPFM, indicating the effective injection of hot holes into CuI valence band (VB). Cross‐verification is also performed based on the fabrication of metal–semiconductor–metal (MSM) photodetectors, and the photoelectrical tests highly dovetail with the surface potential evolution. This research provides an important reference for the plasmonic photoelectronics in both device design and research methods. [ABSTRACT FROM AUTHOR]

In recent years, considerable attention has been paid to multi-component reactions due to the synthesis of desired products with therapeutic properties. Multi-component reactions are one of the most successful methods in increment of structure diversity and complex molecules through simple methods. They can provide effective, efficient, and feasible methods in pharmaceutical chemistry and modern complex compounds with structural diversity. Therefore, it has always been tried to prepare these compounds by using optimal methods and designing efficient and recyclable catalysts. Therefore, the attention to finding new environmentally friendly protocols as a vital issue for the production of metal nanoparticles as a catalyst is developing day by day. In this study, the preparation of copper iodide nanoparticles using barberry extract was investigated. Using barberry extract to prepare the catalyst is a cost-effective and environmentally friendly method. Barberry extract acted as a reducing agent for the synthesis of copper iodide nanoparticles. The structure of the nanoparticle was determined using scanning electron microscope (SEM), X-ray Powder Diffraction (XRD), Fourier transform infrared (FT-IR), and Energy Dispersive X-Ray Analysis (EDX). Then, the performance of the catalyst was evaluated in the synthesis of tetrahydronaphthalein1,3,3(4H)-carbonitrile. Green protocol, easy separation of the catalyst, and good to excellent yields are some of the benefits of the presented method. [ABSTRACT FROM AUTHOR]

In this work, a novel series of pyridazine-triazole hybrid molecules were prepared and evaluated as inhibitors of rat intestinal α-glucosidase enzyme. Amongst all newly synthesized compounds, 10k showed good inhibition in the series with IC50 value of 1.7 µM which is 100 folds stronger than positive control, acarbose. The cytotoxicity revealed that this compound is not toxic against normal cell line, HDF. The docking studies showed that triazole ring plays an important role in the binding interactions with the active site. The insertion of compound 10k into the active pocket of α-glucosidase and formation of hydrogen bonds with Leu677 was observed from docking studies. The kinetic studies revealed that this compound has uncompetitive mode of inhibition against α-glucosidase enzyme. [ABSTRACT FROM AUTHOR]

In this work, a novel series of pyridazine-triazole hybrid molecules were prepared and evaluated as inhibitors of rat intestinal α-glucosidase enzyme. Amongst all newly synthesized compounds, 10k showed good inhibition in the series with IC50 value of 1.7 µM which is 100 folds stronger than positive control, acarbose. The cytotoxicity revealed that this compound is not toxic against normal cell line, HDF. The docking studies showed that triazole ring plays an important role in the binding interactions with the active site. The insertion of compound 10k into the active pocket of α-glucosidase and formation of hydrogen bonds with Leu677 was observed from docking studies. The kinetic studies revealed that this compound has uncompetitive mode of inhibition against α-glucosidase enzyme. [ABSTRACT FROM AUTHOR]

Transition‐metal‐catalyzed enantioselective P−C cross‐coupling of secondary phosphine oxides (SPOs) is an attractive method for synthesizing P‐stereogenic phosphorus compounds, but the development of such a dynamic kinetic asymmetric process remains a considerable challenge. Here we report an unprecedented highly enantioselective dynamic kinetic intermolecular P−C coupling of SPOs and aryl iodides catalyzed by copper complexes ligated by a finely modified chiral 1,2‐diamine ligand. The reaction tolerates a wide range of SPOs and aryl iodides, affording P‐stereogenic tertiary phosphine oxides (TPOs) in high yields and with good enantioselectivity (average 89.2 % ee). The resulting enantioenriched TPOs were transformed into structurally diverse P‐chiral scaffolds, which are highly valuable as ligands and catalysts in asymmetric synthesis. [ABSTRACT FROM AUTHOR]

Transition‐metal‐catalyzed enantioselective P−C cross‐coupling of secondary phosphine oxides (SPOs) is an attractive method for synthesizing P‐stereogenic phosphorus compounds, but the development of such a dynamic kinetic asymmetric process remains a considerable challenge. Here we report an unprecedented highly enantioselective dynamic kinetic intermolecular P−C coupling of SPOs and aryl iodides catalyzed by copper complexes ligated by a finely modified chiral 1,2‐diamine ligand. The reaction tolerates a wide range of SPOs and aryl iodides, affording P‐stereogenic tertiary phosphine oxides (TPOs) in high yields and with good enantioselectivity (average 89.2 % ee). The resulting enantioenriched TPOs were transformed into structurally diverse P‐chiral scaffolds, which are highly valuable as ligands and catalysts in asymmetric synthesis. [ABSTRACT FROM AUTHOR]

In this work, we have reported the temperature-dependent resistive switching (RS) behavior observed in (1-x)CuI.(x)La 0.7 Sr 0.3 MnO 3 nanocomposites with 0.001 < x < 0.05 within the temperature range of 150 K to 300 K. Here, we observed bipolar and interface-type RS behavior, where the resistance can be altered to its previous state by the application of an opposite bias voltage. The extensive analysis of the current versus voltage data for different compositions at room temperature revealed that the dominating transport mechanisms in the low and high bias regions, respectively, were Schottky emission and Poole–Frenkel effect. The enhanced switching response of the RS medium after the addition of La 0.7 Sr 0.3 MnO 3 can be attributed to the oxygen vacancy-induced conduction which was confirmed by X Ray Photoelectron Spectroscopy (XPS) measurements. In the endurance test, the highest ON/OFF ratio averaged over 100 cycles was observed to be 4.2 ± 1.1 and 3.8 ± 0.3 for x = 0.001 and 0.02 respectively at T = 300K. At T = 250 K, we obtained the optimal ON/OFF ratio of 19.8 ± 1.8 for x = 0.001 and 22.7 ± 4.1 for x = 0.02. The investigation of current versus voltage graphs for T = 250 K, 200 K, and 150 K further confirmed Schottky emission and the Poole–Frenkel effect as the dominating transport mechanisms at lower temperatures. [ABSTRACT FROM AUTHOR]

[Display omitted] • CH 3 NH 3 PbI 3 perovskite degradation was observed for three days interval until film gets fully degradation. • The Copper iodide (CuI) was employed as hole transport layer for device study. • Phase change, element exclusion, surface changes electrical changes was observed during the degradation. • Degradation based impedance changes observed and discussed. • Degradation behaves differently with device and single layer. Methylammonium lead iodide (MAPbI 3) has attracted more attention due to its promising features appropriate for photovoltaic application, although the material still struggles with instability towards environmental factors. Understanding the degradation mechanism in this material is of immense importance in increasing material stability. This work investigated the degradation process of MAPbI 3 perovskite in an ambient atmosphere with controlled humidity for twelve days at three days interval. The crystallographic structural changes were observed by X-Ray Diffraction (XRD) and analyzed with the support of the Rietveld refinement method. The result shows transition from MAPbI 3 Tetragonal to PbI 2 trigonal by removal of CH 3 NH 3 I, which is evident in X-ray photoelectron spectroscopy (XPS) elemental analysis. UV–Vis spectroscopy and photoluminescence show changes in the band-gap. Scanning electron microscopy (SEM) observes morphological changes and impedance spectroscopy studies electrical behavior. Our study explains the MAPbI 3 structural, optical, morphological, thermal, and electrical behavior changes during degradation in different studies; it is beneficial for a deeper understanding of the degradation mechanism. [ABSTRACT FROM AUTHOR]

A novel C–H functionalization method was successfully explored by a reductive three molecule coupling of benzaldehydes and esters mediated by samarium and cuprous iodide; thus, the diarylmethanol skeletons were afforded readily via an in situ esterification in one-pot. Substrates including a variety of esters and different benzaldehydes were investigated, and the desired products were readily obtained in moderate to good yields under mild conditions. [ABSTRACT FROM AUTHOR]

In this study, an improved microwave irradiation protocol was developed for synthesizing pyrido[2′,1′:2,3]imidazo[4,5-c]quinoline from 2-(2-bromophenyl)imidazo[1,2-a]pyridine and various benzaldehydes using copper iodide as a catalyst. This protocol also employed benzyl alcohols and methyl arenes in addition to benzaldehyde. The proposed mechanism was supported by DFT and ESI-HRMS studies. Tandem oxidative addition, reductive amination, and intramolecular cyclization under microwave conditions result in the formation of new C–N and C–C bonds, respectively. Among the synthesized derivatives, compounds 3k, 3o, 3u, and 3w exhibited antimycobacterial activity against M. tuberculosis H37Rv ATCC 27294. An in silico ADMET profile was also performed to assess the active compound's safety and efficacy. [ABSTRACT FROM AUTHOR]

Four novel all-in-one structured cuprous iodide hybrid materials are presented. Isomerization of the alkyl chain on the ligand improved material thermal stability and regulated their luminescence to warm and near-white light emission, with the internal quantum yield increasing from 5% to 83%. This provides a reasonable route for designing white light emitting cuprous iodide materials for solid-state lighting in future. [ABSTRACT FROM AUTHOR]

One of the main problems in processing chalcopyrite ore with hydrometallurgical methods is its refractoriness, which is due to the formation of a layer that inhibits the contact of the ore with the leaching solution, thus reducing the dissolution rate. The main objective of this paper is to evaluate the leaching potential of iodide ions in copper extraction from chalcopyrite concentrate in an acidic seawater medium. Leaching tests were carried out in glass reactors stirred at 45 °C. Parameters such as iodide salt concentration and acidity were evaluated in ranges of 0–5000 ppm and 0–1.0 M, respectively. According to the results obtained, adding iodide ions to a medium acid enhances the leaching kinetics in the chalcopyrite concentrate, observing that it improves copper extraction at low concentrations of 100 ppm KI compared to high concentrations of 5000 ppm KI. As a result, part of the iodide required to oxidize copper tends to sublimate or is associated with other ions producing iodinated compounds such as CuI. Copper extraction reached 45% within the first 96 h, while at 216 h, it reached an extraction of close to 70% copper. The recovery rate improves at potentials between 600 and 650 mV, while at lower potentials, the copper extraction decreases. The mineral surface was analyzed using SEM/EDS and XRD analyses for the identification of precipitates on the surface, finding porous elemental sulfur and precipitated jarosite. An increase in iodide ions improves the leaching kinetics in the chalcopyrite concentrate, observing that it improves copper extraction at low concentrations of 100 ppm KI compared to high concentrations of 5000 ppm KI. As a result, part of the iodide required to oxidize copper tends to sublimate or is associated with other ions producing iodinated compounds such as CuI. Copper extraction reached 45% within the first 96 h, while at 216 h, it reached an extraction of close to 70% copper. The recovery rate improves at potentials between 600 and 650 mV, while at lower potentials, the copper extraction decreases. The mineral surface was analyzed using SEM/EDS and XRD analyses for the identification of precipitates on the surface, finding porous elemental sulfur and precipitated jarosite. [ABSTRACT FROM AUTHOR]

Due to the textured nature of random in‐plane orientation of sputtered γ‐CuI (111) thin films, the crystalline grains and grain boundaries (GBs) influence charge carrier transport. Herein, current probe atomic force microscopy (cp‐AFM) measurements for differentiation and correlation of these morphological features and their contribution to electrical conductivity are presented, thus showing a clear difference between the conductive behavior of grains and GBs. A localized high and linearly voltage‐dependent current at the boundaries as well as a rectifying behavior between the platinum‐coated AFM tip and the grain surfaces is observed. Also, a different temporal evolution of voltage‐dependent conductivity is observed for grains and GBs. Further, the charge carrier transport through the surface vanishes with time. It is suspected that atmospheric oxygen causes these time‐dependent surface changes because accelerated degradation of the conductivity after oxygen plasma treatment is also measured. [ABSTRACT FROM AUTHOR]

Low-dimensional ternary copper iodide metal halide with strong quantum confinement effects has made great progress in optoelectronic fields. However, efficient regulation of anisotropic growth of metal halides single crystal still remains a great challenge. Herein, 2 cm size CsCu2I3 single crystals with tunable aspect ratio and the trap states (ntrap) as low as 5.38 X 109 cm-3 are fabricated by optimized anti-solvent vapor-assisted method, in which the growth cycle is shortened by half. Evidenced by real-time observation and the LaMer growth model, the rapid and anisotropic growth mechanism is ascribed to preferential 1D growth, promoted by high concentration and fast vapor rate. Furthermore, the aspect-ratio-dependent optoelectronic performance is observed, the on-off ratio for 2 cm CsCu2I3 single crystal are enhanced 350 times compared with those of short and thick single crystal, which shows ultrahigh on-off ratio of 1570, D* of 1.34 X 1012 Jones, RÁ of276.94 mA W-1, t rise /t decay of 0.37 and 1.08 ms, and EQE of95.53%, which are clearly at very high level among lead-free perovskite-based photodetectors. This study not only provides a new strategy for overcoming anisotropic growth limitations of low-dimensional metal halides, but also paves a way for high-performance optoelectronic applications. [ABSTRACT FROM AUTHOR]

[Display omitted] In the rapid development of organic light-emitting diodes (OLEDs), phosphorescent transition metal complexes have played a crucial role as the most promising candidates for next generation display and lighting applications. However, most devices are fabricated using iridium and platinum-based complexes which are expensive and available in very limited quantities, whereas using relatively abundant organometallic complexes for fabrication results mostly in inefficient performance results. To overcome these issues, we have synthesized tetra copper iodide with tetra triphenyl cage like structure (denoted as CIPh) as an emerging class of luminescent material by mechanochemical grinding followed by thermal treatment for application in white OLED. The CIPh complex exhibits considerable quantum yield and a millisecond decay lifetime. Phosphorescent OLEDs were fabricated using CIPh complex as emitter shows a remarkable performance with external quantum efficiency and current efficiency of 5.28 % and 22.76 cd/A, with a high brightness of 4200 cd m−2, respectively. White OLEDs were also fabricated with a fluorescent blue and phosphorescent red emitted with (CIPh) as green emitter and achieved an impressive CRI of 82 with an EQE of over 3 %. This is the first ever attempt at fabricating WOLEDs using organocopper complex. [ABSTRACT FROM AUTHOR]

This study demonstrates the efficacy of an emerging p‐type copper iodide (CuI) semiconductor in a flexible, low‐voltage resistive random‐access memory (RRAM), which can be readily integrated with metal‐oxide n‐type counterparts for complementary circuit systems. Herein, CuI RRAM devices are implemented via a room‐temperature solid iodination process, exhibiting a consistent On/Off ratio (≈104), excellent endurance of more than ≈103 cycles, together with a long retention period (> 5 × 104 s). Furthermore, a scheme of light‐mediated multi‐level data storage is demonstrated using blue light illumination (λ = 455 nm), to exploit possible photonic memristive functionality through notable photo‐response of CuI. In addition, the current conduction and resistive switching behaviors are systematically studied via low‐temperature measurements from 203 to 343 K, validating thermal stability and the governing key switching mechanism in CuI RRAM devices. The longstanding problem with CuI device longevity is effectively addressed via PMMA encapsulation, resulting in a 15‐fold improvement in the lifespan of devices even in air, as compared with non‐passivated devices. These findings suggest that flexible optoelectronic systems, combined with reliable, ultra‐low power CuI RRAM devices with photo memristive functionality, can leverage the enhancement of multifunctional selectors required in process‐in‐memories and the synaptic elements of neuromorphic applications. [ABSTRACT FROM AUTHOR]

The search for color‐tunable, efficient, and robust scintillators plays a vital role in the development of modern X‐ray radiography. The radioluminescence tuning of copper iodide cluster scintillators in the entire visible region by bandgap engineering is herein reported. The bandgap engineering benefits from the fact that the conduction band minimum and valence band maximum of copper iodide cluster crystals are contributed by atomic orbitals from the inorganic core and organic ligand components, respectively. In addition to high scintillation performance, the as‐prepared crystalline copper iodide cluster solids exhibit remarkable resistance toward both moisture and X‐ray irradiation. These features allow copper iodide cluster scintillators to show particular attractiveness for low‐dose X‐ray radiography with a detection limit of 55 nGy s−1, a value ≈100 times lower than a standard dosage for X‐ray examinations. The results suggest that optimizing both inorganic core and organic ligand for the building blocks of metal halide cluster crystals may provide new opportunities for a new generation of high‐performance scintillation materials. [ABSTRACT FROM AUTHOR]

As a luminescent material with excellent structural diversity and optical tunability, cuprous iodide organic–inorganic hybrid semiconductors have attracted extensive attention in the field of environmental friendly solid-state lighting (SSL). In order to systematically study how tiny changes in ligands influence the luminescence properties of their complexes, in this study, the tail atoms of ethyl groups in ligands are modified with halogen atoms (F, Cl, and Br) and four all-in-one (AIO)-structured cuprous iodide inorganic–organic hybrid semiconductor materials (Cu2I4(Ln)2) are successfully obtained. The adjustment of the tail atoms effectively regulated the stacking modes of Cu2I42− clusters and their luminescence properties, realizing the transition of the crystal luminescence color from blue to green with the internal quantum yield (IQY) increasing from 1.57% to 53.39%. Their optical diffuse reflectance spectra and density functional theory calculations (DFT) helped investigate the origin and mechanism of luminescence. They are very stable and have good solution processability, which means that they can be applied as rare-earth element-free lighting phosphors. This study can provide ideas and a theoretical basis for designing cuprous iodide cluster luminescent materials in future. [ABSTRACT FROM AUTHOR]

A series of 24 new 1H-1,2,3-triazole hybrids of 3-O-acetyl-11-keto-β-boswellic acid (β-AKBA (1)) and 11-keto-β-boswellic acid (β-KBA (2)) was designed and synthesized by employing "click" chemistry in a highly efficient manner. The 1,3-dipolar cycloaddition reaction between β-AKBA-propargyl ester intermediate 3 or β-KBA-propargyl ester intermediate 4 with substituted aromatic azides 5a–5k in the presence of copper iodide (CuI) and Hünig's base furnished the desired products—1H-1,2,3-triazole hybrids of β-AKBA (6a–6k) and β-KBA (7a–7k)—in high yields. All new synthesized compounds were characterized by 1H-, 13C-NMR spectroscopy, and HR-ESI-MS spectrometry. Furthermore, their α-glucosidase-inhibitory activity was evaluated in vitro. Interestingly, the results obtained from the α-glucosidase-inhibitory assay revealed that all the synthesized derivatives are highly potent inhibitors, with IC50 values ranging from 0.22 to 5.32 µM. Among all the compounds, 6f, 7h, 6j, 6h, 6g, 6c, 6k, 7g, and 7k exhibited exceptional inhibitory potency and were found to be several times more potent than the parent compounds 1 and 2, as well as standard acarbose. Kinetic studies of compounds 6g and 7h exhibited competitive and mixed types of inhibition, with ki values of 0.84 ± 0.007 and 1.18 ± 0.0012 µM, respectively. Molecular docking was carried out to investigate the binding modes of these compounds with α-glucosidase. The molecular docking interactions indicated that that all compounds are well fitted in the active site of α-glucosidase, where His280, Gln279, Asp215, His351, Arg442, and Arg315 mainly stabilize the binding of these compounds. The current study demonstrates the usefulness of incorporating a 1H-1,2,3-triazole moiety into the medicinally fascinating boswellic acids skeleton. [ABSTRACT FROM AUTHOR]

Cyanodithioformate salt as an odorless and simply operational source of sulfur was reacted with aryl halides in the presence of copper iodide, affording diaryl disulfide, which reacted with styrenes/α‐methylstyrene in second step to form β‐Hydroxy sulfides with high regioselectivity in good to excellent yields. [ABSTRACT FROM AUTHOR]

High-temperature negative thermal quenching (NTQ) phosphors are crucial to high-performance light-emitting devices. Herein, we report the high-temperature NTQ effect in deep-red to near-infrared (NIR) emitting copper iodide cluster-based coordination polymers as unconventional phosphors, whose NTQ operating temperature can reach as high as 500 K, the highest temperature reached by NTQ molecular-based materials. [ABSTRACT FROM AUTHOR]

The integration of electronic functionalities into textiles for use as wearable sensors, energy harvesters, or coolers has become increasingly important in recent years. A special focus is on efficient thermoelectric materials. Copper iodide as a p-type thermoelectrically active, nontoxic material is attractive for energy harvesting and energy generation because of its transparency and possible high-power factor. The deposition of CuI on polyester spacer fabrics by wet chemical processes represents a great potential for use in textile industry for example as flexible thermoelectric energy generators in the leisure or industrial sector as well as in medical technologies. The deposited material on polyester yarn is investigated by electron microscopy, x-ray diffraction and by thermoelectric measurements. The Seebeck coefficient was observed between 112 and 153 µV/K in a temperature range between 30 °C and 90 °C. It is demonstrated that the maximum output power reached 99 nW at temperature difference of 65.5 K with respect to room temperature for a single textile element. However, several elements can be connected in series and the output power can be linear upscaled. Thus, CuI coated on 3D spacer fabrics can be attractive to fabricate thermoelectric devices especially in the lower temperature range for textile medical or leisure applications. [ABSTRACT FROM AUTHOR]

In this protocol, we report a simple, inexpensive, and user-friendly conventional method for C-N cross coupling between aryl/heteroaryl halides and hetero aryl amines using copper iodide as a catalyst in DMSO as a solvent to prepare pyrimidines and pyrazines derivatives. The reaction conditions were optimized by screening in various copper catalysts and bases. The substrate scope of the reaction was also carried out to prepare novel functionalized N-arylated compounds in good yields. [ABSTRACT FROM AUTHOR]

A concise stereoselective synthesis of (Z)-1,2-bis(arylsulfanyl)ethenes by the reaction of arylsulfonyl chlorides with calcium carbide in the presence of cuprous iodide as a catalyst is described. The salient features of this protocol are its use of an inexpensive and easily handled solid alkyne source as a surrogate for flammable and explosive gaseous acetylene, its commercially available starting materials, its high stereoselectivity, and its simple workup procedures. The stereochemical structure of a selected product was determined by single-crystal X-ray diffraction. This method can be extended to a gram scale. [ABSTRACT FROM AUTHOR]