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A trinuclear heterobimetallic complex with general formula [Cu(PPh3)S2MoS2Cu(PPh3)2]·CHCl3 (SSP) has been synthesized, and its characterization executed using FTIR, NMR, electronic absorption spectroscopies, and single‐crystal X‐ray technique. The complex is solvothermally decomposed in octadecylamine (ODA) to yield ternary copper molybdenum sulfide nanoparticles and successfully grafted onto 2D materials, namely, reduced graphene oxide (rGO) or polyaniline (PANI), and these composites are utilized for oxygen evolution half‐cell reaction (OER). The copper molybdenum sulfide nanoparticles as well as their composites with rGO and PANI and rGO + PANI were characterized using powder X‐ray diffraction, SEM, and EDX analyses. Electrochemical measurements suggested that the modified electrodes have notable electrocatalytic activity toward OER with onset overpotential 400 mV for CMS + PANI and 395 mV for CMS + rGO + PANI. This is the first study on the use of copper molybdenum sulfide nanoparticles composites with rGO and PANI as electrocatalysts for OER displaying substantial synergistic activity. [ABSTRACT FROM AUTHOR]

A series of five new heteroleptic 1,1′‐bis (diphenylphosphino)ferrocene (dppf) appended nickel (II) dithiolates namely, [Ni (dppf)(benzylcyanidedithiolate)] (Bz‐Ni), [Ni (dppf)(2‐cyanobenzylcyanidedithiolate)] (CN‐Ph‐Ni) and [Ni (dppf)(pyridine‐2‐cyanidedithiolate)] (2‐Py‐Ni), [Ni (dppf)(pyridine‐3‐cyanidedithiolate)] (3‐Py‐Ni), Ni (dppf)(thiophene‐2‐cyanidedithiolate)] (Th‐Ni) have been prepared and characterized using spectroscopic techniques and in one case by single‐crystal X‐ray diffraction analysis for CN‐Ph‐Ni. The geometry around Ni (II) in CN‐Ph‐Ni is distorted square planar which is fulfilled by two S and two P centers of dithiolate and dppf ligand, respectively. The electronic absorption spectra for sensitizers display major bands between 400 and 550 nm that could be ascribed to an intra‐molecular charge transfer (ICT) between the ferrocene and functionalized dithiolates to engender an efficient charge separated state. All these newly synthesized compounds are used as sensitizers in dye sensitized solar cells (DSSCs). The photovoltaic performances for the five featured sensitizers follow the order 3‐Py‐Ni>2‐Py‐Ni˃CN‐Ph‐Ni˃Bz‐Ni˃Th‐Ni. The assembly fabricated with 3‐Py‐Ni displays Jsc of 13.15 mA cm−2 and Voc of −0.633 with conversion efficiency (η) and incident photon‐to‐current conversion efficiency (IPCE) of 5.05% and 52%, respectively. The relatively slower charge recombination, greater dye loading capacity on TiO2 nano‐particulate and relative smaller total resistance are the possible reasons behind the superior photovoltaic performance of the cell fabricated using the 3‐Py‐Ni as sensitizer. Also, density of states calculations have been performed which suggested that in the best performer 3‐Py‐Ni+(TiO2)30 cell set‐up, the minimum inter‐band excitation energy lies ~1.4 eV. Also, efficient electron coupling between sensitizer and (TiO2)30 results in efficient sensitization of TiO2 nanocluster. [ABSTRACT FROM AUTHOR]

Background: Late gadolinium enhancement (LGE) imaging in patients with implantable cardioverter-defibrillators (ICD) is limited by device-related artifacts (DRA). The use of wideband (WB) LGE protocols improves LGE images, but their efficacy with different ICD types is not well known.Purpose: To assess the effects of WB LGE imaging on DRA in different non-MR conditional ICD subtypes.Study Type: Retrospective.Population: A total of 113 patients undergoing cardiac magnetic resonance imaging with three ICD subtypes: transvenous (TV-ICD, N = 48), cardiac-resynchronization therapy device (CRT-D, N = 48), and subcutaneous (S-ICD, N = 17).Field Strength/sequence: 5 T scanner, standard LGE, and WB LGE imaging with a phase-sensitive inversion recovery segmented gradient echo sequence.Assessment: DRA burden was defined as the number of artifact-positive short-axis LGE slices as percentage of the total number of short-axis slices covering the left ventricle from based to apex, and was determined for WB and standard LGE studies for each patient. Additionally, artifact area on each slice was quantified.Statistical Tests: Shapiro-Wilks, Kruskal-Wallis analysis of variance, Dunn tests with Bonferroni correction, and Mann-Whitney U-test.Results: In patients with TV-ICD, DRA burden was significantly reduced and nearly eliminated with WB LGE compared to standard LGE imaging (median [interquartile range]: 0 [0-7]% vs. 18 [0-50]%, P < 0.05), but WB imaging had less of an impact on DRA in the CRT-D (8 [0-23]% vs. 16 [0-45]%, p = 0.12) and S-ICD (60 [15-71]% vs. 67 [50-92]%, P = 0.09) patients. Residual DRA was significantly greater (P < 0.05) for S-ICD compared to other device types with WB LGE imaging, despite the generators of all three ICD types having similar proximity to the heart. The area of S-ICD associated DRA was smaller with WB LGE (P < 0.001) than with standard LGE imaging and the artifacts had different characteristics (dark signal void instead of a bright hyperenhancement artifact).Data Conclusion: Although WB LGE imaging reduced the burden of DRA caused by S-ICD, the residual artifact was greater than that observed with TV-ICD and CRT-D devices. Further developments are needed to better resolve S-ICD artifacts.Level Of Evidence: 1 TECHNICAL EFFICACY: STAGE: 5. [ABSTRACT FROM AUTHOR]

Three new Hg(II) complexes with general formula [Hg(L)X2]2 (X = Cl (Hg 1), Br (Hg 2), and I (Hg 3)) have been synthesized using the novel ferrocenyl functionalized ligand 3‐ferrocenyl methyl‐thiazolidine‐2‐thione (L). The ligand (L) and the complexes have been characterized by Fourier transform infrared (FTIR), multinuclear nuclear magnetic resonance (NMR), electronic absorption, photoluminescence spectroscopies, and single crystal X‐ray diffraction. The single crystal X‐ray diffraction studies indicated that Hg 1 and Hg 2 are centrosymmetric dimers with distorted tetrahedral geometry around the Hg(II) centers generated by the two bridging halides, a terminal halide, and an exocyclic sulfur of ligand. Hg 3 possess two monomers with trigonal planar geometries around Hg(II), which are further held by weak Hg⋯I interactions. Variation in geometrical parameters have been attributed to differences in the nature of the halide donors attached to the Hg(II). The cyclic voltammetry experiments for all the compounds suggested their quasi‐reversible redox properties. Also, the photoluminescent investigation for Hg 1 and Hg 2 indicated medium strong photoluminescence emission at ~500 nm arising due to metal‐to‐ligand charge‐transfer (MLCT) transitions of the ferrocenyl moiety. The solid‐state structure of complexes are stabilized by varied interactions, namely, C–H⋯C and bifurcated H⋯Cl⋯H interactions in Hg 1, C–H⋯C, C–H⋯S, S⋯C (Cp), and C–H⋯Br interactions in Hg 2 and C–H⋯C, C–H⋯S, and C⋯S interactions in Hg 3. The nature and percentage contribution of all these interactions have been studied by the Hirshfeld surface analyses. The interaction energies for the dimers of all four compounds have been assessed with the help of density functional theory (DFT) and quantum theory of atoms in molecules (QTAIM). [ABSTRACT FROM AUTHOR]

Five new heteroleptic complexes of Cu(I), Ag(I), and Ni(II) having formulae [Cu3(dtc)2(dppf)2]PF6 (Cu‐I), [Cu3(dtc)2(dppe)2]PF6 (Cu‐II), [Cu(PPh3)2(dtc)] (Cu‐III), [Ag3(dtc)2(PPh3)2]NO3 (Ag‐I), and [Ni(dtc)(dppf)]PF6 (Ni‐I) (dtc = N‐ethanol‐N‐methylferrocenyl‐dithiocarbamate; dppf = 1,1′‐bis(diphenylphosphino)ferrocene; dppe = 1,1′‐bis(diphenylphosphino)ethane; PPh3 = tripheylphosphine) have been synthesized and characterized using elemental analysis, Fourier‐transform infrared, multinuclear nuclear magnetic resonance, UV–Vis spectroscopy, and single‐crystal X‐ray diffraction. The single‐crystal X‐ray diffraction studies indicate that Ag‐I forms a rare trinuclear cluster in which the geometry around the two silver centers Ag1 and Ag3 is distorted tetrahedral, whereas the third silver center Ag2 shows a distorted trigonal planar geometry. The Ni‐I complex has a distorted square‐planar geometry around the Ni center. In addition, a side product [Ag2{S2(dppf)2}] (Ag‐II) was obtained during an attempt to synthesize [Ag(dppf)(dtc)], where the two Ag centers are bridged by two sulfido centers and coordinated with two phosphorus centers of the dppf ligand to give rise to a distorted tetrahedral geometry. The solid‐state structures of Ag‐I, Ni‐I, and Ag‐II are stabilized by a variety of weak interactions. The nature of these interactions has been addressed with the help of Hirshfeld surface analyses. In addition, the weak argentophilic interaction in Ag‐I and Ag‐II have been studied using quantum theory of atoms in molecules and natural bond orbital calculations. The electrochemical properties of the complexes have been investigated using cyclic voltammetry, where Cu‐I and Cu‐II exhibited two quasi‐reversible waves, whereas Cu‐III, Ag‐I, Ag‐II, and Ni‐I exhibited only one quasi‐reversible peak. [ABSTRACT FROM AUTHOR]

For colloidal semiconductor nanocrystals (NCs), replacement of insulating organic capping ligands with chemically diverse inorganic clusters enables the development of functional solids in which adjacent NCs are strongly coupled. Yet controlled assembly methods are lacking to direct the arrangement of charged, inorganic cluster-capped NCs into open networks. Herein, we introduce coordination bonds between the clusters capping the NCs thus linking the NCs into highly open gel networks. As linking cations (Pt2+) are added to dilute (under 1 vol%) chalcogenidometallate-capped CdSe NC dispersions, the NCs first form clusters, then gels with viscoelastic properties. The phase behavior of the gels for variable [Pt2+] suggests they may represent nanoscale analogues of bridged particle gels, which have been observed to form in certain polymer colloidal suspensions. [ABSTRACT FROM AUTHOR]