聚苯胺衍生物电致变色薄膜的制备与物性研究  

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

作　　者：涂亮亮[1] 贾春阳[1] 翁小龙[1] 邓龙江[1] 

机构地区：[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

出　　处：《化学学报》2010年第24期2590-2594,共5页Acta Chimica Sinica

基　　金：国家自然科学基金(No.20602005;20873015);总装创新资助项目

摘　　要：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=-0.5V)和淡紫色(U=0.9V)变化,响应时间约15s,最大透光率变化(△Tmax)约10%(500nm);变色膜2在不同电压下能实现橄榄绿色(U=-0.9V)和深酞蓝色(U=1.4V)变化,响应时间约2s,最大透光率变化(△Tmax)约为20%(497nm);SEM测试得到薄膜2的厚度约550nm,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.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（△Tmax） 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（△Tmax） 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.

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 

分 类 号：TB383.2[一般工业技术—材料科学与工程]