Abstract
Electropolymerization of 3,5-bis(4-bromophenyl)dithieno[3,2-b;2′, 3′-d]thiophene, having a mild electron-withdrawing bromine atom attached to the para position of the two phenyl groups of dithienothiophene, was performed, utilizing a potentiodynamic method. The resultant homopolymer was characterized by cyclic volyammetry, fourier transform infrared and ultraviolet-visible spectroscopy. Spectroelectrochemical and electrochromic properties were investigated and a device was constructed with polyethylenedioxythiophene to understand the characteristics in detail, which had the potential range of 0.0-2.0 V for operating the device between green and blue colors. It had a good optical contrast of 18% with a switching time of less than a second. Moreover, open circuit memory and stability of the device were investigated.
Original language | English |
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Pages (from-to) | 7707-7711 |
Number of pages | 5 |
Journal | Thin Solid Films |
Volume | 519 |
Issue number | 22 |
DOIs | |
Publication status | Published - 1 Sept 2011 |
Keywords
- Dithienothiophenes
- Electrochromic materials
- Optical properties
- Voltammetry