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首页> 外文期刊>Journal of Molecular Structure >Synthesis, structural characterization and photoluminescent properties of 2D multilayer Cu+ coordination polymers via C-H center dot center dot center dot pi and pi center dot center dot center dot pi interactions
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Synthesis, structural characterization and photoluminescent properties of 2D multilayer Cu+ coordination polymers via C-H center dot center dot center dot pi and pi center dot center dot center dot pi interactions

机译:通过C-H中心点中心点中心点PI和PI中心点中心点中心点PI相互作用的2D多层Cu +配位聚合物的合成,结构表征和光致发光性能

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Two Cu(I) coordination polymers, {[Cu(pmbb)(0.5)(4,4'-bipy)(0.5)(PPh3)](BF4) (H2O)(2)}(n) (1) and {[Cu(pmbb)(0.5)(bpe)(0.5)(PPh3)](BF4)(DMF)}(n) (2) (pmbb = N, N'-bis(pyridin-2-ylmethylene)biphenyl -4,4'-diamine, 4,4'-bipy = 4,4'-bipyridine, bpe = 1,2-bis(4-pyridyl)ethylene), PPh3 = triphenyl phosphine), have been synthesized and characterized by IR, H-1 NMR, C-13 NMR, P-31 NMR, F-19 NMR, B-11-NMR, TG and X-ray crystal structure analysis. The structural analysis shows that complexes 1 and 2 contain diverse and interesting 2D supramolecular networks based on inter-chain interactions. Complex 1 displays a 1D zig-zag chain and a 1D+1D -> 2D supramolecular network formed by intermolecular C-H center dot center dot center dot pi interaction. For 2, each 1D zig-zag chain interacts with neighboring ones via intermolecular C-H center dot center dot center dot pi and pi center dot center dot center dot pi stacking interactions, leading to the formation of a 2D-stacking network. Furthermore, solid-state UV-Vis absorption spectra of complexes 1 and 2 indicate the existence of MLCT absorption. Complexes 1 and 2 show efficient luminescent emission peaks at 435 and 452 nm assigned to MLCT excited states, and the emission decay lifetimes are 20.82 mu s for 1 and 20.72 mu s for 2, displaying strong room-temperature solid-state photoluminescence. Moreover, thermogravimetric analysis shows that the heat stability of polymers is 1>2. (C) 2017 Elsevier B.V. All rights reserved.
机译:两个Cu(I)配位聚合物,{[Cu(PMBB)(0.5)(0.5)(4,4'-Bipy)(0.5)(PPH3)](BF4)(H 2 O)(2)}(N)(1)和{ [Cu(PMBB)(0.5)(BPE)(0.5)(PPH3)](BF4)(DMF)}(N)(2)(PMBB = N,N'-BIS(吡啶-2-基甲基)联苯-4 ,4'-二胺,4,4'-Bipy = 4,4'-硼胺,BPE = 1,2-双(4-吡啶基)乙烯),PPH3 =三苯基膦酮,通过IR,H合成和表征-1 NMR,C-13 NMR,P-31 NMR,F-19 NMR,B-11-NMR,TG和X射线晶体结构分析。结构分析表明,基于链间相互作用,复合物1和2含有不同和有趣的2D超分子网络。复杂1显示由分子间C-H中心点中心点中心点PI相互作用形成的1D Zig-Zag链和1D + 1D - > 2D超分子网络。对于2,每个1D Zig-Zag链通过分子间C-H中心点中心点中心点PI和PI中心点中心点中心点PI堆叠相互作用与相邻的ZAG链相互作用,导致2D堆叠网络的形成。此外,复合物1和2的固态UV-Vis吸收光谱表明了MLCT吸收的存在。复合物1和2显示分配给MLCT激发态的435和452nm处的有效发光峰,并且发射衰减寿命为20.82μs,对于2,表现出强室温固态光致发光。此外,热重分析表明聚合物的热稳定性为1> 2。 (c)2017年Elsevier B.V.保留所有权利。

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