高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (9): 1975-1982.doi: 10.7503/cjcu20200299

• 研究论文:无机化学 • 上一篇    下一篇

钒钨酸盐/刚果红电致变色复合膜及器件研究

杨艳艳, 张洁, 冯素洋, 祁岳, 刘晓庆, 于晓洋, 曲小姝()   

  1. 吉林化工学院化学与制药工程学院, 吉林 132022
  • 收稿日期:2020-05-27 出版日期:2020-09-10 发布日期:2020-06-22
  • 通讯作者: 曲小姝 E-mail:xiaoshuqu@jlict.edu.cn
  • 基金资助:
    国家自然科学基金(21902058);吉林省科技厅自然科学基金(20180101191JC);吉林省教育厅“十三五”科学技术项目(JJKH20190820KJ)

Electrochromic Composite Film and Device Based on Vanadium Tungstate and Congo Red

YANG Yanyan, ZHANG Jie, FENG Suyang, QI Yue, LIU Xiaoqing, YU Xiaoyang, QU Xiaoshu()   

  1. College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, China
  • Received:2020-05-27 Online:2020-09-10 Published:2020-06-22
  • Contact: QU Xiaoshu E-mail:xiaoshuqu@jlict.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(21902058);he Natural Science Foundation of Jilin Province,China(20180101191JC);the“13th Five ? Year”Science and Technology Project of the Education Department of Jilin Province,China(JJKH20190820KJ)

摘要:

应用Layer-by-Layer自组装技术, 采用聚乙烯亚胺(PEI)阳离子将无机电致变色材料[P2W15V3O62]8?(P2W15V3)阴离子与刚果红(CR)阴离子通过静电引力复合, 构筑了复合膜[PEI/P2W15V3/PEI/CR]20及对比膜 [PEI/P2W15V3]20. 利用扫描电子显微镜、 紫外-可见吸收光谱和电化学工作站研究了复合膜的形貌与电致变色性能. 对比研究表明, 复合膜可实现浅红色-蓝紫色-浅红色的可逆颜色调变, 且保持了[P2W15V3O62]8?阴离子的电致变色性能, 光反差22.55%, 着色效率122.67 cm2/C.复合膜循环测试400圈后透过率(500 nm)处损耗仅为6.94%, 稳定性良好; 由复合膜组装的电致变色器件也实现了由浅红色到蓝紫色的颜色变化. 本研究可为解决多酸电致变色材料颜色变化单一的问题提供参考.

关键词: 多酸, 电致变色性质, 钒钨酸盐, 刚果红

Abstract:

The [PEI/P2W15V3/PEI/CR]20 film containing [P2W15V3O62]8? anions, Congo red anions and poly- ethyleneimine cations was fabricated by layer-by-layer self-assembly technology through electrostatic attraction, and the [PEI/P2W15V3]20 film was also prepared by a similar method. The morphology and electrochromic properties of the films were studied by means of SEM, UV-Vis and electrochemical workstation. The results show that the composite film can realize the cyclic color change from light red to bluish violet and then to light red, and the electrochromic properties of [P2W15V3O62]8? anions were well maintained. The light contrast of the film is 22.55%, the coloring efficiency can reach 122.67 cm2/C, the transmittance(in 500 nm) loss of the composite film is only 6.94% after 400 cycles, and its stability is good. The electrochromic device also realizes the color modulation from light red to bluish violet. This research will provide a reference for solving the problem of single color change of polyoxometalate electrochromic materials.

Key words: Polyoxometalate, Electrochromic property, Vanadium tungstate, Congo red

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