中文摘要：

采用电化学法得到了具有电致变色性能的厚度为100~200nm的聚苯（PANI）薄膜，研究了聚合时间对PANI膜光电性能的影响。研究结果表明，在适当的聚合时间下，PANI膜呈现色域较宽、颜色饱和度较大的梯度颜色变化过程，其电荷转移电阻（Rct）和紫外吸收曲线及颜色间的响应时间（Responsetime）呈现规律性的变化，且在该聚合时间下，膜达到最大光学对比度（35％），有望在电致变色智能窗上取得良好的应用。

英文摘要：

Polyaniline films with nano-sized thicknesses were synthesized by electrochemical polymerization. The influence of polymerization time on optical electric properties of PANI films was investigated. The results show that the PANI films display a wide range of color gamut and a color gradient under the proper polymerization time; the charge transfer resistances（Rot）, UV-vis absorption curves and the response times between different colors all present regular changes; furthermore, the maximum optical contrast ratio（35 %） of PANI films was achieved under the same polymerization time, which is promising applied in the smart windows.