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Employing in situ N‐alkylation of the conjugated compound 9,10‐bis(4‐pyridyl)anthracene (bpanth) as structure‐directing agent, a 3D inorganic‐organic hybrid iodoplumbate, [Me2(bpanth)][Pb4I10] (1), was solvothermally prepared. The in situ N‐alkylation of bpanth with alcohols was investigated. 1 features a novel 3D open framework based on an interesting Pb6I24 cluster. UV/Vis spectroscopy analyses indicate that 1 is a potential semiconductor material with a narrow energy gap of 2.06 eV. It exhibits good catalytic activity in the visible‐light‐drived degradation of an organic dye. This work further illustrates that introducing conjugated organic molecules as templates is conducive to achieving semiconducting hybrid halometallates with narrow band gaps. [ABSTRACT FROM AUTHOR]

Through regulating the pH values, a series of iodo‐argentate/cuprate hybrids, [Me3(4‐TPT)]4[Ag6I18] (1, Me3(4‐TPT)=N,N′,N′′‐trimethyl‐2,4,6‐tris(4‐pyridyl)‐1,3,5‐triazine), [Me3(4‐TPT)][M5I8] (M=Ag/2, Cu/2 a), [Me3(3‐TPT)][M5I8] (Me3(3‐TPT)=N,N′,N′′‐trimethyl‐2,4,6‐tris(3‐pyridyl)‐1,3,5‐triazine, M=Ag/3, Cu/4), which exhibit adjustable structural variations with different dimensional structures, have been obtained under solvothermal conditions. They are directed by two types of in situ N‐alkylation TPT‐derivatives (Me3(4‐TPT) for 1/2/2 a and Me3(3‐TPT) for 3/4) and represent the isolated units (1), 1D polymeric chain (4), 2D layered structures (2/2 a, 3) based on diverse metal iodide clusters. These compounds possess reducing band gaps as compared with the bulk β‐AgI and CuI and belong to potential semiconductor materials. Iodocuprates feature highly efficient photocatalytic activity in the sunlight‐induced degradation of organic dyes. The detailed study on the possible photocatalytic mechanism, including radical trapping tests and theoretical calculations, reveals that the N‐alkylation TPT moieties contribute to the narrow semiconducting behavior and effectively inhibit the recombination of photogenerated electron‐hole pairs, which result in an excellent visible‐light‐induced photocatalytic performance. Mind the band gap: By tuning pH values, four iodo‐argentate/cuprate hybrids with adjustable structural variations directed by in situ N‐alkylation tripyridine‐derivatives were solvothermally obtained, which exhibit narrow band gaps and highly efficient solar‐driven photocatalytic property. [ABSTRACT FROM AUTHOR]

A new series of conjugated oligothiophene-bridged bis(arylene ethynylene) small molecules have been designed, synthesized, and characterized by photophysical, electrochemical and computational methods. These compounds were found to have optimal LUMO levels that ensure effective from these compounds to [6,6]-phenyl-C71-butyric acid methyl ester (PC70BM). They were utilized as good electron-donor materials that can be blended with electron-acceptor PC70BM in the fabrication of solution-processed molecular bulk heterojunction (BHJ) . All of these BHJ devices showed very high open-circuit voltage ( Voc) of 0.90-0.97 V, and the best power conversion efficiency achieved was 3.68 %. The high Voc is consistent with the deeper low-lying HOMO level and is relatively insensitive to the donor : acceptor blend ratio. The spin-coated of these small molecules showed p-channel field-effect with the hole mobilities of up to 2.04×10−4 cm2 V−1 s−1. These compounds illuminate the potential of solution-processible small-molecular aryl acetylide compounds for efficient in photovoltaic implementation. [ABSTRACT FROM AUTHOR]