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DFT Study on Molecular Spectra and Excited State of 7-(4-(3,6-dinitro-carbazole-9-yl) styryl) Coumarin
Authors
张静
梁小蕊
+4 more
江炎兰
王刚
王秀娟
赵波
Publication date
1 January 2013
Publisher
Abstract
采用密度泛函理论(DFT)对7-(3,6-二硝基-N-p-乙烯基苯基咔唑)香豆素分子做理论研究。用B3LYP/6-31G(d,p)对其几何结构进行优化,得到其最稳定构型及能量。在优化结构的基础上,对其进行频率分析得到了分子的红外光谱和拉曼光谱,并对谱线中的各峰值做了具体指认,同时也得到了分子的最高占据轨道(HOMO)和最低空轨道(LUMO)能隙为2.150eV。利用含时密度泛函理论(TDDFT)对该分子的激发态进行计算,得到最低十个跃迁允许的单激发态。对前线分子轨道最高占据轨道和最低空轨道分析得到,C-C原子之间形成了离域π键。研究结果表明:7-(3,6-二硝基-N-p-乙烯基苯基咔唑)香豆素..
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Last time updated on 29/11/2016