Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 8, 1993
Previous Article Next Article

Preparation and characterization of tungsten trioxide/dibenzyl viologen polymer bilayer electrochromic films

Abstract

A new composite electrochromic material has been prepared by electropolymerizing N,N′-bis[p-(trimethoxysilyl)benzyl]-4,4′-bipyridinium dichloride (BPQ2+·2Cl) on top of a reductively conducting film of tungsten trioxide. The resulting bilayer system responds to a potential step from 0.9 to –0.65 V by turning from colourless to blue in two steps: the absorbance due to one-electron reduction of each monomer unit in poly(BPQ2+) increases quickly (in < 4 s), and is followed by a slower development of the absorbance due to the WO3 reduction ( > 1 min). The significance of these bilayer films is discussed with respect to applications to electrochromic devices.

Back to tab navigation

Article information


J. Mater. Chem., 1993,3, 833-839
Article type
Paper

Preparation and characterization of tungsten trioxide/dibenzyl viologen polymer bilayer electrochromic films

N. Leventis and Y. C. Chung, J. Mater. Chem., 1993, 3, 833
DOI: 10.1039/JM9930300833

Search articles by author

Spotlight

Advertisements