| D-A结构的9,9-二芳基芴类发光材料的合成、表征及性能 |
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| 引用本文： | 欧阳密,项文勤,张玉建,金燕仙,张诚.D-A结构的9,9-二芳基芴类发光材料的合成、表征及性能[J].物理化学学报,2011,27(6):1516-1524. |
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| 作者姓名： | 欧阳密 项文勤 张玉建 金燕仙 张诚 |
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| 作者单位： | 1. State Key Laboratory Breeding Base for Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China;
2. School of Chemical Engineering, Taizhou College, Linhai 317000, Zhejiang Province, P. R. China |
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| 基金项目： | 国家重点基础研究发展计划(973)前期专项，浙江省自然科学基金，中国博士后基金 |
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| 摘 要： | 设计合成了一系列以三苯胺结构为核心的具有推电子-拉电子(D-A)结构的9,9-二芳基芴类有机小分子. 研究了介质极性对吸收与发射光谱行为的影响及分子结构与其发光能力的关系. 该类化合物荧光发射波长范围在430-530 nm. 并在特定极性溶剂中观察到双重荧光现象. 溶剂效应显示该类化合物随着介质极性的增加, 分子内电荷转移态(ICT)的荧光发射峰波长先红移后蓝移且荧光强度降低, 表现出扭曲的分子内电荷转移(TICT)行为. 该类化合物的最高占有分子轨道(HOMO)能级位于-5.24 - -5.50 eV, 且可以通过改变取代基电负性的强弱来调节. 所得化合物的玻璃化转变温度为192-206 °C, 热重分析(TGA)表明化合物的热分解温度都在400 °C以上, 具有良好的热稳定性.
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| 关 键 词： | 光致发光 推电子-拉电子结构 分子内电荷转移 双荧光 扭曲的分子内电荷转移 |
| 收稿时间： | 2011-01-13 |
| 修稿时间： | 2011-04-22 |
Synthesis,Characterization and Properties of Electron Donor-Acceptor Complexes Based on 9,9-Diarylfluorene |
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| OUYANG Mi,XIANG Wen-Qin,ZHANG Yu-Jian,JIN Yan-Xian,ZHANG Cheng.Synthesis,Characterization and Properties of Electron Donor-Acceptor Complexes Based on 9,9-Diarylfluorene[J].Acta Physico-Chimica Sinica,2011,27(6):1516-1524. |
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| Authors: | OUYANG Mi XIANG Wen-Qin ZHANG Yu-Jian JIN Yan-Xian ZHANG Cheng |
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| Institution: | 1. State Key Laboratory Breeding Base for Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou, 310014, P. R. China;
2. School of Chemical Engineering, Taizhou College, Linhai 317000, Zhejiang Province, P. R. China |
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| Abstract: | A series of fluorene-triphenylamine derivatives containing an electron donor-acceptor (D-A) structure based on 9,9-diarylfluorene was designed and synthesized. Their optical properties were investigated by UV-Vis spectroscopy and photoluminescence (PL) techniques in solution as well as in the solid state. The maximum PL emission wavelengths of the compounds ranged from 430 to 530 nm. A dual fluorescence phenomenon was observed in particular polar solvents and the relationship between emission properties and... |
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| Keywords: | Photoluminence Electron donor-acceptor structure Intramolecular charge-transfer Dual fluorescence Twisted intramolecular charge transfer |
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