影像科学与光化学 ›› 2018, Vol. 36 ›› Issue (1): 51-56.DOI: 10.7517/j.issn.1674-0475.2018.01.004

• 论文 • 上一篇    下一篇

紫精-普鲁士蓝凝胶电致变色器件的制备

宋伟伟, 王跃川   

  1. 四川大学 高分子科学与工程学院 高分子材料工程国家重点实验室, 四川 成都 610065
  • 收稿日期:2017-02-20 修回日期:2017-04-06 出版日期:2018-01-15 发布日期:2018-01-15
  • 通讯作者: 王跃川

Preparing of Viologen-prussian Blue Gel Eletrochromic Device

SONG Weiwei, WANG Yuechuan   

  1. State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, P. R. China
  • Received:2017-02-20 Revised:2017-04-06 Online:2018-01-15 Published:2018-01-15

摘要: 合成了醛基功能化的紫精,1,1'-二醛己基-4,4'-联吡啶,通过与聚乙烯醇的缩醛反应将紫精固定到凝胶电解质中,对电极用电沉积法沉积普鲁士蓝,制备了新型凝胶型电致变色器件。这种凝胶电致变色器件避免了电解质泄露的风险并拓宽了电致变色器件的应用范围。采用1HNMR对分子结构进行了表征,通过紫外-可见分光光度计研究了器件的电致变色性能及其影响因素。结果表明:采用将紫精通过共价键并入凝胶的方法,制备的器件在±2 V的工作电压下具有47%的对比度,着色时间2.8 s,褪色时间3.3 s,并且具有良好的循环稳定性。

关键词: 紫精, 电致变色, PVA水凝胶

Abstract: 1,1'-dihexanal-4,4'-bipyridinium chloride was designed and synthesized.For preparing a novel gel eletrochromic device,viologen was immobilized in the PVA gel electrolytes by aldolization,and the counter electrode was deposited Prussian blue via electro-deposition.This device avoids the leakaging risk of liquid electrolytes and extends the appllications of eletrochromic devices.The structure and eletrochromic porperties were studied by 1HNMR and UV-Vis spectra.The results indicate that the eletrochromic devices with viologen immobilized in gel electrolytes achieves high-performance in terms of optical contrast (47% at 530 nm), switching time(<4 s) and cyclability.

Key words: viologen, eletrochromism, PVA gel