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Lv Y.,University of Sichuan | Lv Y.,Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities | Wei W.,University of Sichuan | Xie Y.,University of Sichuan
Journal of the Chilean Chemical Society | Year: 2015

A novel BODIPY-based anion sensor 1 bearing di-tert-butyl phenol unit was designed and prepared. In the presence of three basic anions F-, AcO- or H2 PO4-, 1 exhibited two novel partially overlapped red-shift absorption bands at 718 nm and 757 nm, respectively. The formation of allotropic structures, after deprotonation of phenol OH, is responsible for these two emerging bands. Fluorescence quenching was also observed due to intramolecular charge transfer (ICT) from phenolate to BODIPY core. As results revealed, the anion affinity mainly depended on the acidity of binding site OH and the basicity of the target anion. Moreover, two bulky tert-butyl groups cannot effectively exclude the approach of large anions to phenol OH, but can facilitate the formation of allotropic resonance structures. © 2015, Sociedad Chilena de Quimica. All rights reserved. Source


Huang T.-H.,Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities | Yan J.,Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities | Liu Y.-F.,Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities | Xie Y.-T.,Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities | Jia C.,CAS Lanzhou Institute of Chemical Physics
Australian Journal of Chemistry | Year: 2015

Based on the ligand 1,4-bis(2-(diphenylphophino)benzylideneamino)benzene (pbb), two complexes, [Cu2(pbb)(2,2′-bipyridine)2](BF4)2 (1) and [Cu2(pbb)(phen)2](BF4)2 (2), have been prepared and characterised by IR, 1H NMR, 31P NMR, 19F NMR, and 11B NMR spectroscopy and X-ray crystal structure analysis. Structural analysis reveals that complexes 1 and 2 contain 1D infinite chains and 2D supramolecular networks constructed by C-H···π and π···π interactions, and an ordered-layer-lattice of BF4- is located between these 2D networks. The results show that C-H···π and π···π interactions play an important role in the formation of 2D supramolecular networks. The UV-vis absorption peaks of complexes 1 and 2 display intraligand charge transfer and metal to ligand charge transfer (MLCT) absorption. Complexes 1 and 2 display efficient luminescent emission assigned to MLCT excited states, and the maximum emissions of these complexes in acetonitrile solution are different from those of the solid-state samples. In addition, complexes 1 and 2 have been exploited as sensitisers in dye-sensitised solar cells, and efficiencies are also observed. © CSIRO 2015. Source


Huang T.-H.,Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities | Yan J.,Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities | Yang H.,Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities | Du H.-M.,Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities | Zhang M.-H.,Tianjin University of Technology
Journal of Coordination Chemistry | Year: 2015

A series of Cu+ complexes, [Cu2(L)(dppe)2](BF4)2 (1), [Cu2(L)(dppp)2](BF4)2·2CH3CN (2), and [Cu2(L)(dppe)2](ClO4)2 (3) (L = N,N'-bis(dipyridin-2-ylmethylene)benzene-1,4-diamine, dppe = 1,2-bis(diphenylphosphino)ethane, and dppp = 1,3-bis(diphenyl phosphino)propane), have been synthesized and characterized by IR, 1H NMR, 31P NMR, UV-vis spectrum, and X-ray crystal structure analysis. The structural analysis reveals each Cu+ is four-coordinate N2P2 and adopts a distorted-tetrahedral geometry. Crystal structures of 1-3 contain 1-D supramolecular arrays constructed by intermolecular π···π interactions, with variations in π-stacking patterns. The ordered-layer-lattice BF-4 or CH3CN is located between 1-D arrays. The absorption peaks of 1 and 2 in acetonitrile at room temperature display ILCT and MLCT absorptions. Emission experiments show solid-state emissions of 1 and 2 are not similar to those of solution samples. The conversion efficiency of 1 and 2 in dye-sensitized solar cells is extremely poor (<0.1%). © 2015 © 2015 Taylor & Francis. Source

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