SiO2@DV复合光子晶体的制备及电致变色性能研究  

Preparation and Electrochromic Properties of SiO_2 @ DV Composite Photonic Crystals

作　　者：孟佳意 何萌 杨晟 裴永富 李昕[1,2] 

机构地区：[1]北京服装学院材料科学与工程学院,服装材料研究开发与评价北京市重点实验室,北京100029 [2]北京市纺织纳米纤维工程技术研究中心,北京100029

出　　处：《北京服装学院学报（自然科学版）》2017年第4期1-6,共6页Journal of Beijing Institute of Fashion Technology：Natural Science Edition

基　　金：国家自然科学基金项目(21544002);北京市教委科技重点项目(KZ201410012017);北京服装学院“服装工效与功能创新北京市重点实验室”开放课题(KYTG02170202)

摘　　要：本文采用St9ber法制备了单分散SiO_2微球,通过垂直沉积组装成蛋白石结构光子晶体,再利用电化学法在SiO_2微球表面生成十二烷基紫精(dodecyl-viologen,简称DV),得到核-壳结构的SiO_2@DV光子晶体复合膜.测试了SiO_2@DV光子晶体薄膜的反射光谱、循环伏安曲线、多电位紫外吸收光谱、对比度及响应时间等光学、电化学及电致变色性能.结果表明,SiO_2@DV复合光子晶体薄膜的氧化还原能力比DV好,颜色更加艳丽;相比于DV薄膜16%的对比度,该光子晶体薄膜最大对比度达到20%;DV薄膜的着色响应时间和褪色响应时间分别为9.08和6.7 s,而SiO_2@DV光子晶体薄膜的着色响应时间和褪色响应时间分别为8.34和5.41 s,较DV薄膜的着色和褪色响应快.将光子晶体结构引入DV中,可得到性能提高的电致变色材料.Mono-dispersed silica microspheres were prepared by St9 ber method,and photonic crystal SiO_2 with opal structure were obtained by vertical deposition self-assembly. The dodecyl violet(DV)was infiltrated into the SiO_2 opal template via electrochemical method to obtain the core-shell structured SiO_2@ DV photonic crystal composite films. The electrochemical and electrochromic properties of the SiO_2@ DV films were characterized in terms of cyclic voltammetry and spectro-electrochemistry techniques. The results show that the redox ability of SiO_2@ DV composite photonic crystal films is better than that of pure DV,and the maximum contrast of SiO_2@ DV films reaches 20% as compared with that of the pure DV films of 16%. The coloring and fading response times of the pure DV films are 9. 1 s and 6. 7 s respectively,while those of the SiO_2@ DV photonic crystal films are 8. 34 s and 5. 41 s,being faster than that of the DV films. The results demonstrate that introducing photonic crystal structure into DV films is an effective method to improve the performances of electrochromic materials.

关 键 词：十二烷基紫精 核一壳结构 复合光子晶体 电致变色 

分 类 号：O484.42[理学—固体物理]