Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (6): 1399.doi: 10.7503/cjcu20190541

• Material Chemistry • Previous Articles    

Synthesis and Electrochromic Performance of Phosphazene-viologen Polymer

SUN Mengying1,2,Lü Jingchun1,2,XU Hong1,2,ZHANG Linping1,2,ZHONG Yi1,2,CHEN Zhize1,2,SUI Xiaofeng1,2,MAO Zhiping1,2,3,*()   

  1. 1. Key Lab of Science and Technology of Eco-textile, Ministry of Education, Shanghai 201620, China
    2. College of Chemistry, Chemical Engineering and Biotechnology, Shanghai 201620, China
    3. National Engineering Research Center for Dyeing and Finishing of Textiles, Donghua University, Shanghai 201620, China
  • Received:2019-10-21 Online:2020-06-10 Published:2020-04-16
  • Contact: Zhiping MAO E-mail:zhpmao@dhu.edu.cn
  • Supported by:
    † National Natural Science Foundation of China(21872025)

Abstract:

Electrochromic materials have attracted considerable attention due to their versatile applications in academic and industrial areas. In this work, a novel organic-inorganic hybrid electrochromic material(denoted as PHV 2+) was synthesized, which contains six viologen moieties and a hexachlorocyclotriphosphazene core. The structure of the polymer was characterized by Fourier transform infrared spectroscopy(FTIR), X-ray diffraction(XRD) and nuclear magnetic resonance. The water solubility makes it possible to construct an electrochromic hydrogel with polyvinyl alcohol by a simple method, which has the advantages of low cost and no toxicity. The electrochromic device made of this polymer exhibits good electrochromic properties with good cyclic stability. The device undergoes a noticeably yellowish-purple color change at a voltage of 2.1 V. The optical contrast of the device is 62.19% at 526 nm. This electrochromic polymer shows its potential in electrochromic application.

Key words: Viologen, Phosphazene, Electrochromism, Polyvinyl alcohol gel electrolyte

CLC Number: 

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