物理化学学报 >> 2015, Vol. 31 >> Issue (3): 476-482.doi: 10.3866/PKU.WHXB201501121

电化学和新能源 上一篇    下一篇

以氨基化的聚苯乙烯微球为模板制备电致变色性能优良的单层有序多孔PBTB薄膜

欧阳密1, 黄森彪1, 韩延刚2, 吕晓静1, 杨媛1, 戴玉玉1, 吕耀康1, 张诚1   

  1. 1. 浙江工业大学化工学院,杭州 310014;
    2. 浙江质量检测科学研究院, 杭州 310018
  • 收稿日期:2014-11-14 修回日期:2015-01-12 发布日期:2015-03-06
  • 通讯作者: 吕耀康, 张诚 E-mail:Yaokanglv@zjut.edu.cn;czhang@zjut.edu.cn
  • 基金资助:

    国际科技合作计划(2012DFA51210)和国家自然科学基金(51203138, 51273179)资助项目

Enhanced Electrochromic Performance of Ordered Porous Monolayer PBTB Film Using Amine-Modified Polystyrene Spheres as a Template

OUYANG Mi1, HUANG Sen-Biao1, HAN Yan-Gang2, LÜ Xiao-Jing1, YANG Yuan1, DAI Yu-Yu1, LÜ Yao-Kang1, ZHANG Cheng1   

  1. 1. College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. China;
    2. Zhejiang Institute of Quality Inspection Science, Hangzhou 310018, P. R. China
  • Received:2014-11-14 Revised:2015-01-12 Published:2015-03-06
  • Contact: Lü Yao-Kang, ZHANG Cheng E-mail:Yaokanglv@zjut.edu.cn;czhang@zjut.edu.cn
  • Supported by:

    The project was supported by the International Science and Technology Cooperation Program, China (2012DFA51210) and National Natural Science Foundation of China (51203138, 51273179).

摘要:

通过利用氨基化的聚苯乙烯(PAS)为模板, 结合电化学原位聚合法, 成功制备了具有高度有序多孔纳米结构的聚1,4-二噻吩苯(PBTB)薄膜. 所制得的有序多孔薄膜在掺杂/脱掺杂状态下能够实现颜色从紫色到黄色的可逆转变. 相比于平整的PBTB薄膜, 有序多孔纳米薄膜在1100 nm处的褪色时间从1.0 s 缩短至0.5 s, 着色时间从3.6 s 缩短至3.1 s; 同样地, 在620 nm处的褪色时间和着色时间也有所减少, 分别从1.6 s 减少到0.7 s和从4.5 s 减少到了3.8 s. 同时,电化学阻抗图谱显示有序多孔纳米薄膜具有更小的电荷转移阻抗, 这主要归功于多孔纳米结构的引入增加了聚合物薄膜的比表面积, 有利于离子的注入与抽出, 并有效缩短了离子的扩散距离, 从而提高了聚合物的响应速度. 因此, 多孔有序纳米结构的引入可以显著提升导电聚合物薄膜的电致变色性能.

关键词: 电致变色, 有序多孔结构, 响应时间, 离子扩散, 电化学聚合

Abstract:

Poly(1,4-bis(2- thienyl)-benzene) (PBTB) with a highly ordered porous nanostructure was successfully made using monolayer amine-modified polystyrene (PAS) as template in an electropolymerization method. The ordered porous polymer (OP-PBTB) film obtained can exhibit reversible color changes (yellow and purple) between the doping/dedoping states. Compared with the switching time of pure PBTB (colored time (tc) and bleached time (tb): 1.0 and 3.6 s at 1100 nm; 1.6 and 4.5 s at 620 nm), the switching time of OP-PBTB film is significantly shortened to 0.5 s (tc) and 3.1 s (tb) at 1100 nm, and 0.7 s (tc) and 3.8 s (tb) at 620 nm with the introduction of the porous nanostructure. In addition, the electrochemical impedance spectra (EIS) show that the ordered porous nanostructure offers OP-PBTB film a relatively low charge transfer resistance due to the larger surface area and shorter ion diffusion distance. This leads to higher intercalation/extraction capacities and faster ion diffusion speed, thus further shortening the switching time. Therefore, an effective way to improve the electrochromic performance of conducting polymers may be to construct ordered nanostructures using PAS as a template.

Key words: Electrochromism, Ordered porous structure, Switching time, Ion diffusion, Electropolymerization

MSC2000: 

  • O646