二苯乙烯基苯衍生物的分子内电荷转移及固态荧光性质的研究
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- 英文论文题名：Twisted Intramolecular Charge Transfer and Crystalline Emission of 1,4-distyrylbenzene Derivatives
- 论文作者：刘英杰 ; 徐斌 ; 田文晶
- 英文论文作者：Yingjie Liu ; Bin Xu ; Wenjing Tian ; State Key Laboratory of Supramolecular Structure and Materials ; Jilin University
- 年：2016
- 作者机构：超分子结构与材料国家重点实验室吉林大学;
- 论文关键词：二苯乙烯基苯 ; 固态发光 ; 分子内电荷转移
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十一分会：π-共轭材料
- 语种：中文
- 分类号：TQ422
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：166k
- 原文格式：O
- 会议级别：全国
摘要
有机光电功能材料因其独特的电子结构和性能,日益凸现出在材料科学中的地位。光电器件大多数都要在固态实现,由于传统的有机小分子在聚集状态下荧光淬灭,因此,设计具有高效固态发光性质的有机荧光分子十分有意义。我们设计了三个具有A-D-A结构的二苯乙烯基苯衍生物,通过在分子结构中引入不同电子给体或受体单元,可实现其激发态特征变化,进而有效调控分子的发光颜色及发光效率。其中,对于红光分子DPBA,扭曲的分子构象有效增加发光集团间的距离,同时减弱跃迁偶极间的相互作用,其晶体荧光量子产率可达69%。
Three cross-conjugated 1,4-distyrylbenzene derivatives(DPD,DPBA and DBBA) with A-D-A structure were synthesized.Their intramolecular charge transfer(ICT) character and packing modes in crystalline state were studied.Spectral investigations on these complexes reveal that photoinduced intramolecular charge transfer occurs and results in large Stokes shift of DPD and DPBA in polar solvents.The weak dipole-dipole interaction together with the intermolecular interactions induced stabilized excited state in crystals,resulting in relatively high solid-state PL efficiency in DPBA crystal.
Three cross-conjugated 1,4-distyrylbenzene derivatives(DPD,DPBA and DBBA) with A-D-A structure were synthesized.Their intramolecular charge transfer(ICT) character and packing modes in crystalline state were studied.Spectral investigations on these complexes reveal that photoinduced intramolecular charge transfer occurs and results in large Stokes shift of DPD and DPBA in polar solvents.The weak dipole-dipole interaction together with the intermolecular interactions induced stabilized excited state in crystals,resulting in relatively high solid-state PL efficiency in DPBA crystal.
引文
[1]Shimizu,M;Takeda,Y.;Higashi,M;Hiyama,T.Angew.Chem.Int.Ed.2009,48:3653.