| 摘要: |
| 通过使用电化学循环伏安法分别在十二烷基苯磺酸和HNO3中电沉积制备了聚苯胺(PANI)电致变色薄膜.使用Raman、FE-SEM和电化学原位紫外可见吸收光谱对所制备的聚苯胺电致变色薄膜进行测定表征,结果显示两种质子酸中获得的聚苯胺形貌存在显著的差异,且对其在离子液体BmimPF6中的电致变色性能产生影响.实验结果显示在十二烷基苯磺酸微乳液中沉积制得的聚苯胺电致变色薄膜在BmimPF6中具有良好的电致变色响应.使用BmimPF6为电解质,将所制得的聚苯胺电致变色薄膜电极与通过电化学沉积制得的三氧化钨(WO3)电极一起组装得到了电致变色器件.原位吸收光谱数据显示,所制得的电致变色器件,在-1.5~2 V的工作电压下,具有稳定的电致变色响应,其着色和褪色时间分别为4.0 s和5.0 s,着色效率达176 cm2·C-1(λ=600 nm). |
| 关键词: 聚苯胺薄膜 电致变色 离子液体 三氧化钨 |
| DOI： |
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| 基金项目:上海市优秀青年教师专项基金(yyy11029); 上海师范大学校科研基金(SK201237); 上海师范大学重点学科基金资助;上海市科委启明星基金(07QA14044) |
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| Studies onelectrochromic behaviors of electrodeposited polyaniline membranes in BmimPF6 and electrochromic device |
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ZHANG Xinyan1, SUN Jie2, GUO Shanliang3, QIN Junrong1, LI Xiaoguang1, ZHANG Shengxia1, WANG Rong1
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1.College of Life and Environmental Sciences,Shanghai Normal University;2.School of Chemical and Environmental Engineering,Shanghai Institute of Technology;3.College of Mathematics and Sciences,Shanghai Normal University
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| Abstract: |
| Electrochromic polyaniline membrances were prepared by cyclic votammetry in dodecylbenzenesulphonic acid and HNO3 solutions,respectively.The as-prepared membranes were characterized with Raman and FE-SEM and their electrochromic responses in the ionic liquid (BminPF6) were measured and comparatively analyzed via in-situ UV-visible spectrophotoscopy to illustrate the possible effect of morphologies of polyaniline membranes on their electrochromic properties.The results show that the polyaniline membranes electrodeposited in dodecylbenzenesulphonic acid solution have good electrochromic responses.With BmimPF6 as electrolyte,the electrochromic device was prepared by using electrodeposited polyaniline membrane electrode and WO3 one.The in-situ UV-visible spectrophotoscopic data show that the as-prepared electrochromic device exhibited stable electrochromic response under the working potentials between-1.5 V~2.0 V.The coloration and bleaching times are 4 s and 5 s,respectively and the coloration efficiency is 176 cm2C-1(λ=600 nm). |
| Key words: polyaniline membrane electrochromic ionic liquid WO3 |
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