聚希夫碱及复合材料的光致_电致变色性能研究_牛海军

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聚希夫碱及复合材料的光致、电致变色性能研究

牛海军1,*，马丽娜1，王文2，白续铎1

1

功能无机化学材料教育部重点实验室，黑龙江大学，黑龙江省哈尔滨市，150086

2

哈尔滨工业大学，材料科学与工程学院，黑龙江省哈尔滨市，150001

*haijunniu@hotmail.com

含有三芳胺结构的聚希夫碱具有电阻记忆效应、三阶非线性光学效应、光伏效应而受到关注。由于该种材料在氧化还原时产生不同价态的离子，或在酸碱环境中共轭结构改变而引起颜色变化，因此可以用于伪装、汽车的后视镜、航天器与房屋的智能窗、显示器件与传感器等。但本征态的共轭聚合物由于导电性能差，导致变色效率低，变色速率慢。在聚希夫碱中加入导电性掺杂剂可以期待复合物的变化效率与速率的提高。由于碳纳米管与石墨烯有大的比表面积，良好的是电荷传输性能，离子存储容量大，可以做为优良的掺杂剂。本文采用二胺基三苯胺衍生物单体为核心，以不同取代结构与电子结构的二胺为单体，用缩聚的方法制备聚希夫碱，并通过与功能化的碳纳米管与石墨烯复合得到材料，并研究了复合材料的热行为，电致变色与酸致变色性能。结果表明不同取代基的单体会有效地调控聚合物的吸收光谱，而添加了碳材料的复合材料薄膜在吸收上会发生不同程度的蓝移，并且电致变色速率与效率都有一定程度的提高。

0.450.40Absorption (a.u)0.350.300.250.200.150.100.05431458588 0 V 0.7 V 0.9 V 1.0 V 1.1 V 1.2 V 1.3 V 1.4 V 1.5 V 1.6 V10721223528400600800100012001400Wavelength (nm)

Fig.1 RGO/PSB in the process of doping between 0.0 and 1.6 V with 0.05 V potential intervals

关键词：聚希夫碱；碳纳米管；石墨烯；电致变色 参考文献

[1] Haijun Niu, Jiwei Cai , Ping Zhao, Cheng Wang, Xuduo Bai, Wen Wang, Dyes and Pigments, 2013, 96:158 [2] Jiwei Cai, Haijun Niu, Cheng Wang, Lina Ma, Xuduo Bai, Wen Wang, Electrochimica Acta, 2012, 76:29

Photochromism and Electrochromism Properties of PolySchiff Base and

Its Composites

Haijun Niu1,*, Wen Wang 2, Xuduo Bai1

1

Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education,

Department of Polymer Materials and Engineering, Heilongjiang University, Harbin 150086 2

School of Material Science and Engineering, Harbin Institute of Technology, Harbin, 150080

A series of polyschiff bases (PSB) have been synthesized through polycondensation using diamine-triphenylamine and different dialdhydes. Carbon nantubes (CNTs) and reduced graphene oxide (RGO) were added to PSB to form composite to enhance the efficiency and velocity of electrochromism. The result showed that the different site and electron properties of substituted groups could regulate the energy band efficiently, and the addition of carbon materials had demonstrated the enhancement of efficiency and velocity of electrochromism and photochromism.

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