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化学学报
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化学学报 ›› 2010, Vol. 68 ›› Issue (24): 2590-2594. 上一篇    下一篇

研究论文

聚苯胺衍生物电致变色薄膜的制备与物性研究

涂亮亮，贾春阳*，翁小龙，邓龙江   

  1. (电子科技大学 电子薄膜与集成器件国家重点实验室 微电子与固体电子学院 成都 610054)
  • 投稿日期:2009-12-30 修回日期:2010-08-04 发布日期:2010-08-30
  • 通讯作者: 贾春阳 E-mail:cyjia@uestc.edu.cn
  • 基金资助:

    国家自然基金

Preparation and Physical Properties of Electrochromic Thin Films Based on Polyaniline Derivatives

TU Liang-Liang, JIA Chun-Yang, WENG Xiao-Long, DENG Long-Jiang   

  1. (State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Microelectronics and Solid-State Electronics, University of Electronic Science and Technology of China, Chengdu 610054)
  • Received:2009-12-30 Revised:2010-08-04 Published:2010-08-30

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1505

被引次数

14

采用循环伏安电化学沉积方式分别制备了聚邻甲氧基苯胺(1)和聚邻甲氧基苯胺/邻硝基苯胺(2)电致变色薄膜, 并通过UV-Vis、分光光度仪、场发射扫描电子显微镜(SEM)对其进行性能表征. 结果显示: 变色膜1在不同电压下能实现湖绿色(U＝－0.5 V)和淡紫色(U＝0.9 V)变化, 响应时间约15 s, 最大透光率变化(DTmax)约10% (500 nm)|变色膜2在不同电压下能实现橄榄绿色(U＝－0.9 V)和深酞蓝色(U＝1.4 V)变化, 响应时间约2 s, 最大透光率变化(DTmax)约为20% (497 nm)|SEM测试得到薄膜2的厚度约550 nm, 且不同颜色状态下其表面形貌及导电性能有较大的差别. 由以上结果可以看出: 电致变色薄膜2比1具有更快的响应速度和较好的颜色对比度, 因此薄膜2是更好的电致变色材料.

关键词: 电致变色, 电化学沉积, 共聚, 邻甲氧基苯胺, 邻硝基苯胺

Electrochromic films 1 and 2 based on poly(o-anisidine) and poly(o-anisidine-co-o-nitroaniline) were prepared by cyclic voltammetry method, respectively. The physical properties of the films were studied by UV-Vis, spectrophotometer and field-emission scanning electron microscopy (SEM). The results indicate that the film 1 has two obviously different colors as aqua (U＝－0.5 V) and lavender (U＝0.9 V) under different voltages and its respond time is 15 s, the biggest different transmittance (DTmax) of film 1 is 10% (around 500 nm). The film 2 also has two obviously different colors as olive green (U＝－0.9 V) and deep phthalocyanine blue (U＝1.4 V) under different voltages and the response time is 2 s, the biggest different transmittance (DTmax) of the film 2 is 20% (around 497 nm). From the SEM results, it could be seen that the surface morphologies and the conducting properties of the film 2 are obviously different under the different color states. Based on above results, it can be seen that the film 2 has faster respond time and higher color contrast comparing with those of film 1, so the film 2 is a better electrochromic film.

Key words: electrochromism, electrodeposition, copolymerization, o-anisidine, o-nitroaniline