杂多钨酸盐/茜素红复合膜制备及电致变色性能研究

Su-yang FENG,Yan-yan YANG,Xiao-shu QU,Qing-qing HAN,Jia-ning TAN

Chemical Research and Application（2018）

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Abstract

通过LbL自组装技术构筑了基于杂多钨酸盐K12.5Na1.5[NaP5W30O110]·15H2O(P5W30),有机染料茜素红(AR)和聚乙烯亚胺的复合膜.利用紫外-可见吸收光谱、扫描电镜和循环伏安扫描对复合膜的形貌及氧化还原性质进行了表征,使用电化学工作站和紫外-可见吸收光谱联机对复合材料的电致变色性能进行了研究.结果显示,复合膜的构筑是成功的,光反差为33.7%,着色时间为2.7 s,褪色时间为1.5 s,最大着色效率为52 cm2C-1,复合膜实现了由淡橙色到蓝绿色,进而到深绿之间的可逆变化,实现了可调颜色的电致变色.

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Key words

electrochromic,polyoxometalate,alizarin red,layer-by-layer

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