Abstract
A series of new anode-cathode conjugated electrochromic polymeric pyridinium salts containing mainchain triphenylamine units and demonstrating multicolor electrochromism has been synthesized. All of the polymers exhibit intense UV absorption with maxima of absorption and fluorescence at 340–343 and 336–338 nm in DMF solutions and 460–461 and 410–438 nm in films. The electrochromic properties of the films are investigated by electrochemical and spectroelectrochemical methods. Reversible redox signals with stable electrochromic characteristics are found in cyclic voltamperograms. The electrochromic properties of the polymers remain highly stable after 50 cycles in the range 0–1.2 V.
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