多色显示的电致变色共聚物制备与性质

Preparation and Properties of Electrochromic Copolymer with Multicolor Display

采用电化学共聚方法,制备3,4乙烯二氧噻吩(EDOT)与1,4亚苯基双((4(二苯基氨基)苯基)甲酮)(BOTPA)的共聚物薄膜.通过调控外加电压,以控制共聚物氧化还原态之间的转变,从而实现吸收光谱和薄膜颜色明显的可逆转换.多种生色团的有效共聚,实现了一系列丰富的颜色显示,在-0.5~1.3 V之间,可实现由黑紫色到灰蓝色7种颜色的变化.采用紫外可见分光光度计、扫描电镜、电化学工作站和光谱电化学联用设备等,研究共聚物薄膜的电化学性质、表面形貌、电致变色现象和光谱电化学性能.

The copolymer film of 3,4 ethylenedioxythiophene(EDOT)and 1,4 phenylene bis((4(diphenylamino)phenyl)methanone)(BOTPA)is prepared by electrochemical copolymerization.The transition between the redox state of the copolymer is controlled by adjusting the applied voltage,so as to realize the obvious reversible conversion of the absorption spectrum and the color of the film.The effective copolymerization of multiple chromophores result in a series of colors display between-0.5 V and 1.3 V,which are seven colors from black violet to gray blue.The electrochemical properties,surface morphology,electrochromic phenomenon and spectroelectrochemical performance of the copolymer film was investigated by ultraviolet visible spectrophotometer,scanning electron microscope,electrochemical workstation and spectroelectrochemical combined equipment.