Solvent resistant electrochromic polymer based on methylenebridged arylamines

CRISTINA LUJAN RAMIREZ; ALEJANDRO RUBEN PARISE

ORGANIC ELECTRONICS

Elsevier

Lugar: Amsterdam; Año: 2009 p. 747 - 752

1566-1199

We here report the synthesis and the electrochemical, spectroelectrochemical and FTIR characterization of a novel arylamine electrochromic film. The electron-donating fragments are isolated tetraphenylbenzidine (TPB) groups. The special configuration that perpendicularly binds the triphenylamine units by a tetrahedral carbon prevents orbital interactions between redox fragments and localizes the generated radicals, rendering an efficient electropolymerization process. The polymer film obtained showed reversible electrochemical oxidation accompanied by strong and long-lasting color changes and high insolubility in most solvents once electrodeposited on the electrode surface. We propose a plausible electropolymerization mechanism on the basis of the FTIR spectra.