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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (10): 1225-1231. 上一篇    下一篇

研究论文

枝化苯胺-吡咯啉发色团的合成及其电光性质的研究

高武1,2, 刘家磊1,2, 陈卓1,2, 侯文军1,2, 薄淑晖1, 刘新厚1, 甄珍*,1   

  1. (1中国科学院理化技术研究所 中国科学院光化学转换与功能材料重点实验室 北京100190)
    (2中国科学院研究生院 北京 100049)
  • 投稿日期:2010-09-09 修回日期:2010-12-27 发布日期:2011-01-27
  • 通讯作者: 甄珍 E-mail:zhenzhen@mail.ipc.ac.cn
  • 基金资助:

    国家重大科学研究计划973项目;中科院基础科学局方向性项目;中国科学院高技术研究与发展局项目

Synthesis of Branched Aniline-pyrroline Chromophores and the Research on Their Electro-Optical Properties

Gao Wu1,2|Liu Jialei1,2|Chen Zhuo1,2|Hou Wenjun1,2|Bo Shuhui1|Liu Xinhou1|Zhen Zhen*,1   

  1. (1 Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190)
    (2 The Graduate University of Chinese Academy of Sciences, Beijing 100049)
  • Received:2010-09-09 Revised:2010-12-27 Published:2011-01-27
  • Supported by:

    The National Basic Research Program of China (973 Program)

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为了减少发色团偶极相互作用, 在二阶非线性发色团苯胺-吡咯啉分子的受体吡咯啉的N原子上分别接入三种不同的枝化基团, 将其高μβ值有效转化为高电光性能. 研究了三种枝化发色团的电光性能和相关化学物理性质, 比较了不同枝化基团对发色团的综合性能的影响. 结果表明, 枝化基团的接入引起发色团分子的紫外吸收红移, 枝化基团修饰的发色团, 改善了苯胺-吡咯啉发色团分子与聚碳酸酯(APC)的相容性, 并明显减少了发色团偶极静电相互作用, 提高了发色团在电场下的极化效率, 使其在聚碳酸酯(APC)薄膜中的极化序列参数可高达44%. 并测得当枝化发色团在APC中掺杂的含量为9%时, 聚合物体系电光系数高达75 pm/V (1315 nm激光测定).

关键词: 电光材料, 发色团, 枝化基团, 聚碳酸酯

In order to minimize the intermolecular electrostatic interactions and effectively translate high μβ value of chromophore into macroscopic electro-optical (EO) coef?cient (r33), the shape-modification of aniline-pyrroline chromophore by combining three kinds of dendritic groups respectively to the N atom of pyrroline acceptor produced three kinds of dendritic chromophores. Their physical, optical properties and EO activity influenced by different dendritic groups were discussed. The result indicates that shape-modification of the aniline-pyrroline chromophore with dendritic groups made a red-shift of UV-Vis absorption, and the produced dendritic chromophore had a better compatibility with amorphous polycarbonate polymer (APC). Their spherical structures can minimize intermolecular electrostatic interactions, and thus the orientational order parameter (Φ) was as high as 44% when chromophores as a guest in the host polymer APC. A large electro-optical (EO) coefficient was achieved as high as 75 pm/V at 1315 nm with 9% chromophores loading in APC film.

Key words: electro-optic material, chromophores, dendritic group, amorphous polycarbonate polymer