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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]

Two new LMOFs, [Cd9(BTA)6(5-tbuip)6O2]n (LMOF-1) and [Cd3(BTA)2(5-tbuip)2]n (LMOF-2) (BTA = 1H-benzotriazole, 5-tbuip = 5-tert-butylisophthalic acid), have been synthesized by a solvothermal method. The different anions of cadmium salts lead to two isostructural LMOFs. Fe3+ could be detected by LMOF-1 with N-rich sites, which possessed a high quenching coefficient (Ksv) of up to 1.87 × 105 M−1. The Ksv value for the detection of Fe3+ is better than or comparable to those reported in the literature. Since LMOF-2 had a larger pore size compared to that of LMOF-1, it could detect Cr2O72− with a higher Ksv than LMOF-1. In addition, LMOF-1 is closer to white light, which means that it has potential application in white light-emitting diodes (WLEDs). [ABSTRACT FROM AUTHOR]

Two new title MOFs, [Zn(BTA)2]n (LMOF-1) and [Zn3(BTA)2(5-tbuip)2]n (LMOF-2) (BTA = 1H-benzotriazole, 5-tbuip = 5-tert-butylisophthalic acid), have been synthesized by a solvothermal method. The structures of the two complexes have been determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction (PXRD) and thermogravimetric (TG) analysis. And the calculation of PLATON displays that the porosity values are 15.04% and 18.77%. Fluorescence analysis reveals that the two MOFs generate strong blue luminescence; LMOF-1 and LMOF-2 can be regarded as multiresponsive fluorescence sensors for Fe(III) and Cr(VI) (CrO42−/Cr2O72− ions) detection with high sensitivity and selectivity and a low detection limit in water via fluorescence quenching. It is worth noting that most LMOFs for detecting Ag+ to date are mainly formed with rare earth lanthanide metals, while there are still few Zn-based LMOF probes used in Ag+ detection. LMOF-1 can detect trace Ag+ in water with a low detection limit. In addition, LMOF-1 has excellent water stability and thermal stability, and is an excellent material for detecting Ag+ in daily water samples. [ABSTRACT FROM AUTHOR]

Two new title MOFs, namely [Cd2(TIPA)2(bpodc)2]n (1 or MOF-1), [Cd2(TIPA)2(oba)2]n (2 or MOF-2) (TIPA = tris(4-(1H-imidazol-1-yl)phenyl)amine, bpodc = benzophenone-4,4′-dicarboxylic acid, oba = 4,4′-oxydibenzoic acid), have been synthesized via a solvothermal method. MOF-1 and MOF-2 both have a 2-fold interpenetrating 3D framework, and the calculation of PLATON display that porosity are 18.6% and 19.5%, respectively. Attributing to MOF-2 's uncoordinated carboxylate groups, it exhibits a high sensitivity in detecting Fe3+ with a very large quenching coefficient Ksv up to 27 027 M−1. Moreover, MOF-2 also has potential applications in chemical sensing of CrO42− and Cr2O72−. [ABSTRACT FROM AUTHOR]

A novel two‐dimensional CoII coordination framework, namely poly[(μ2‐biphenyl‐4,4′‐diyldicarboxylato‐κ2O4:O4′){μ2‐bis[4‐(2‐methyl‐1H‐imidazol‐1‐yl)phenyl] ether‐κ2N3:N3′}cobalt(II)], [Co(C14H8O4)(C20H18N4O)]n, has been prepared and characterized by IR, elemental analysis, thermal analysis and single‐crystal X‐ray diffraction. The crystal structure reveals that the compound has an achiral two‐dimensional layered structure based on opposite‐handed helical chains. In addition, it exhibits significant photocatalytic degradation activity for the degradation of methylene blue. [ABSTRACT FROM AUTHOR]

A novel multifunctional chemical sensor Mn-based LMOF, namely, [Mn(tipe) 4 (ndc)Cl] n (LMOF-1) was solvothermally synthesized by introducing an aggregation-induced emission luminogens (AIEgens) ligand, 1,1,2,2-tetrakis(4-(1H -imidazole-1-yl)-phenyl)ethane, and analyzed by single crystal X-ray diffraction, thermogravimetric and powder X-ray diffraction and other methods. The analysis of the structure showed that LMOF-1 crystallized in a monoclinic system, P2 1 /n space group. LMOF-1 has high stability and strong luminescence properties in solutions. The sensing experiments testify that it can be used as a selectively multifunctional sensor for Fe3+, CrO 4 2− and Cr 2 O 7 2−, with high quenching coefficient (Ksv) values at 11924 ​M−1, 16078 ​M−1 and 18744 ​M−1, respectively. Noticeably, there found that the Ksv value of Cr 2 O 7 2− was the highest among published literature. A novel Mn-based LMOF, [Mn(tipe) 4 (ndc)Cl] n (LMOF-1), was solvothermally synthesized by introducing an AIE luminogens ligand. It has high stability and strong luminescence properties in water and can be used as a multifunctional sensor for Fe3+, CrO 4 2− and Cr 2 O 7 2−. [Display omitted] • A novel multifunctional chemical sensor Mn-based LMOF-1 was solvothermally synthesized by introducing an AIEgens ligand. • LMOF-1 has high stability and strong luminescence properties. • It can be used as a selectively multifunctional sensor for Fe3+, CrO 4 2− and Cr 2 O 7 2−, with high quenching coefficient values. • The Ksv value of Cr 2 O 7 2− was the highest among published literature. [ABSTRACT FROM AUTHOR]

• Three new LMOFs titled, [Mn(TIPA)(ndc)(H 2 O)] n (LMOF-1), [Mn 2 Cl 2 (TIPA) 2 (oba)] n (LMOF-2), [Mn 3 O(TIPA)(oba) 3 ] n (LMOF-3) (TIPA = tris(4-(1H-imidazole-1-yl)phenyl)amine, ndc = 1,4-naphthalene dicarboxylic acid, oba = 4,4'-oxydibenzoic acid) have been synthesized under solvothermal conditions. • Due to an uncoordinated carboxylate group in LMOF-1, it can selectively detect Fe3+, CrO 4 2- and Cr 2 O 7 2− ions with high quenching constants and low detection limits of 14,647 M−1 and 2.505 × 10−5 M for Fe3+, 10,705 M−1 and 2.835 × 10−5 M for CrO 4 2-, 6101 M−1 and 3.108 × 10−5 M for Cr 2 O 7 2−. • It is worth noting that the LMOF-1 exhibited excellent sensing performance for OH−. Three new LMOFs titled, [Mn(TIPA)(ndc)(H 2 O)] n (LMOF-1), [Mn 2 Cl 2 (TIPA) 2 (oba)] n (LMOF-2), [Mn 3 O(TIPA)(oba) 3 ] n (LMOF-3) (TIPA = tris(4-(1H-imidazole-1-yl)phenyl)amine, ndc = 1,4-naphthalene dicarboxylic acid, oba = 4,4'-oxydibenzoic acid) have been synthesized under solvothermal conditions. Single crystal diffraction analysis showed that LMOFs 1-3 were two-node network structures. LMOF-3 had a 2-fold interpenetrating 3D framework made up of pentahedron SBU with Mn 3 O(CO 2) 6 units as the core (The Mn 3 O(CO 2) 6 unit is defined as a pentahedral SBU). LMOF-1 and LMOF-2 on the other hand consist of six-coordinated octahedral structures with a single Mn atom as the core, with an uncoordinated carboxylate group in LMOF-1, selectively detecting Fe3+, CrO 4 2- and Cr 2 O 7 2− ions with high quenching constants and low detection limits of 14,647 M−1 and 2.505 × 10−5 M for Fe3+, 10,705 M−1 and 2.835 × 10−5 M for CrO 4 2-, 6101 M−1 and 3.108 × 10−5 M for Cr 2 O 7 2−. It is worth noting that the LMOF-1 exhibited excellent sensing performance for OH− [Display omitted] Under hydrothermal conditions, [Mn(TIPA)(ndc)(H 2 O)] n (1), [Mn 2 Cl 2 (TIPA) 2 (oba)] n (2), [Mn 3 O(TIPA)(oba) 3 ] n (3). 1-3 show strong blue luminescence and may be useful to the development of fluorescent materials. Noticeably, 1 shows unusually detecting behavior to OH−. And it can also be considered as a multi-response highly efficient luminescent sensor toward Fe3+ cation, CrO 4 2− and Cr 2 O 7 2− anions in water due to the uncoordinated carboxylate groups. It means they potentially can be used as luminescence-based chemical sensors for detecting. [ABSTRACT FROM AUTHOR]

• A new 3D metal-organic framework [Zn(Titpe)(bcpf)•(DMF)] n was successfully constructed by solvothermal method at 90 ℃ with tetraphenylethene (TPE)-core ligands. It shows good AIE luminescence characteristics, and shows strong blue emission in the solid state. Compound 1 has higher detection sensitivity for metal cations (Fe3+) and for anions (Cr 2 O 7 2− and CrO 4 2−). Therefore, compound 1 has good fluorescence properties and can be used as a cheap and efficient chemical sensor. A new 3D luminescent Zinc (II) metal-organic framework, has been solvothermally synthesized by using Zn(NO 3) 2 ⋅4H 2 O and a mixture of ligands: Titpe ligand and bcpf ligand. The molecular formula is [Zn(Titpe)(bcpf)•(DMF)] n, (Compound 1 , Titpe = 1,1,2,2-tetrakis(4-(1H-imidazol-1-yl)phenyl)ethane, bcpf= 4,4΄-sulfonyldibenzoic acid). Compound 1 crystallizes in the triclinic system, space group P -1, with a=12.9990(9), b=14.2181(10), c=14.3781(10) Å, α = 89.974(4)°, β = 71.640(4)°, γ = 80.732(4)°, V = 2485.6(3) Å3, Z = 2, M r = 1039.43, D c =1.389 g/cm3, μ = 0.600 mm−1, F (000) = 1076.0, R = 0.0747 and wR =0.2508 for 9724 observed reflections (I > 2 σ (I)). Topology analysis shows that compound 1 is a double interpenetrating structure. In addition, due to the ligand-to-ligand charge transfer of the TPE chromophore, luminescent spectra of 1 shows that it emits strong blue light. Compound 1 can detect Fe3+ ions with high selectivity and sensitivity among diverse inorganic cations in aqueous solution and is also a highly selective sensing material for CrO 4 2− and Cr 2 O 7 2- ions. A new 3D metal-organic framework [Zn(Titpe)(bcpf)•(DMF)] n was successfully constructed by solvothermal method at 90 ℃ with tetraphenylethene (TPE)-core ligands. It shows good AIE luminescence characteristics, and shows strong blue emission in the solid state. Compound 1 has higher detection sensitivity for metal cations (Fe3+) and for anions (Cr 2 O 7 2− and CrO 4 2−). Therefore, compound 1 has good fluorescence properties and can be used as a cheap and efficient chemical sensor. [Display omitted] [ABSTRACT FROM AUTHOR]

A luminescent Cd-MOF is synthesized based on a triphenylamine-core ligand tris(4-(1H-imidazol-1-yl)phenyl)amine (TIPA), [Cd2(TIPA)2(oba)2]n (LMOF-1, oba = 4,4′-oxybisbenzoic). Fluorescence analysis of LMOF-1 shows blue light which can be attributed to the double role of ligand-to-ligand charge transition (LLCT) and aggregation-induced emission (AIE) effect, indicating that it can be used as a potential LED phosphor. As a luminescent sensor, LMOF-1 has excellent performance in detecting Cr3+, CrO42−, and Cr2O72− in water. Significantly, the quenching coefficient (KSV) of Cr3+ is 1.64 × 104 M−1, which is greater than or comparable to those reported in the literature. Therefore, LMOF-1 may be an excellent multi-functional response and recyclable luminescent sensor. [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]

• A novel AIEgens Mn-based LMOF (LMOF-1) has been solvothermally synthesized. • LMOF-1 has good stability in water. • LMOF-1 shows high selectivity and sensitivity in detecting Al3+. • LMOF-1′s LOD is 1.77×10−7M in detecting Al3+ in water. • Its LOD is the highest value to meet WHO's standard for detecting Al3+ in drinking water. Photoluminescence chemical sensors based on metal-organic frameworks have excellent applications in detecting heavy metal ions in water systems due to their advantages such as good sensitivity and short response time. Herein, a novel AIEgens Mn-based LMOF, [Mn(tipe) 4 (bpdc) 2 ] n (LMOF-1) (tipe = 1,1,2,2-tetrakis(4-(1H-imidazol-1-yl)phenyl)ethene, bpdc = [1,1′-biphenyl]-4,4′-dicarboxylic acid), was synthesized by solvothermal method, and characterized by X-ray single crystal diffraction, elemental analysis and powder X-ray diffraction. Suprisingly, LMOF-1 has good stability in water and shows high selectivity and sensitivity in detecting Al3+ by significantly fluorescence-enhanced phenomenon with its LOD at 1.77×10−7M, which can meet the World Health Organization (WHO) standard for detecting Al3+ in drinking water. This work provides insights into the potential applications of Mn-based MOFs in chemical sensing. [Display omitted] [ABSTRACT FROM AUTHOR]

Three novel inorganic-organic hybrid materials, [PbI 3 (BTA-1)] n (1) (BTA-1 = N -((1 H -benzotriazole-1-yl)methyl)- N , N -dimethyl ethylammonium)，[Cu 2 I 3 (BTA-2)] n (2) (BTA-2 = 1-(1 H -benzotriazole-1-yl)- N , N , N -trimethylammonium carbamate) and [ZnI 3 (BTA-3)] n (3) (BTA-3 = 3-(1 H -benzotriazole-1-yl)- N , N , N -trimethylpropane-1-ammonium), have been was prepared by a solvent volatilization method. All three complexes have been characterized by single-crystal X-ray diffraction, powder X-ray diffraction (PXRD) and thermogravimetric (TG) analysis. Based on different metal iodides, they stack in different structural modes with different cluster cores, such as [PbI 6 ]2- in complex 1 , [Cu 4 I 6 ]2- in complex 2 and [ZnI 3 N]2- in complex 3. The fluorescence analysis show that complex 1 and 2 produced green light when the excitation wavelength was 318 nm and 328 nm, respectively. While complex 3 exhibited near white light when the excitation wavelength was 424 nm (CIE: 0.332, 0.395). It shows that complex 3 can be used as a white light emitting material for direct blue light excitation. By solvent volatilization method, three late-model inorganic-organic hybrid materials, [PbI 3 (BTA-1)] n (1)，[Cu 2 I 3 (BTA-2)] n (2) and [ZnI 3 (BTA-3)] n (3) (BTA = 1 H -benzotriazole), have been prepared. The fluorescence properties showed that complex 1 and 2 produced green light respectively. While complex 3 exhibited near white light (CIE: 0.332,0.395). It shows that complex 3 can be used as a white light emitting material for direct blue light excitation. [Display omitted] • Three luminescent inorganic-organic hybrid materials, 1 – 3 , have been was prepared by a solvent volatilization method. • Based on different metal iodides, they stack in different structural modes with different cluster cores, such as [PbI 6 ]2- in 1 , [Cu 4 I 6 ]2- in 2 and [ZnI 3 N]2- in 3. • This regulation realize complexes' emission from green light to near-white light. • Complex 3 exhibited near white light when excited at 424 nm. It shows 3 can be used as a white light emitting material for direct blue light excitation. [ABSTRACT FROM AUTHOR]