Substituent effects to the electrochromic behaviors of electropolymerized metallophthalocyanine thin films

• Published in: Journal of solid state electrochemistry Vol. 20; no. 5; pp. 1311 - 1321
• Main Authors: Kobak, Rabia Zeynep Uslu, Akyüz, Duygu, Koca, Atıf
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.05.2016
• Subjects: Analytical Chemistry; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; Electrochemistry; Energy Storage; Original Paper; Physical Chemistry; Electrochemistry; Electrochromism; Phthalocyanine derivatives; Spectroelectrochemistry; Electropolymerization
• ISSN: 1432-8488; 1433-0768
• DOI: 10.1007/s10008-016-3120-z

Metallophthalocyanines (MPcs) ( M  = 2H + , Zn 2+ , Co 2+ , and Cu 2+ ) bearing diethylaminophenoxy and chloro substituents at the peripheral positions ( MPc-tdea-tCl ) were coated on the working electrodes with the electropolymerization and tested as electrochromic materials. Altering the metal center of MPcs affected the redox activities of MPc-tdea-tCl films. All electropolymerized MPc-tdea-tCl films behaved as conductive and redox active films in different electrolyte systems. Electrochromic properties of MPc-tdea-tCl films were investigated via the voltammetric, in situ spectroelectrochemical, and in situ spectroelectrocolorimetric measurements. H 2 Pc-tdea-tCl film did not give any electrochromic response, while ZnPc-tdea-tCl and CuPc-tdea-tCl films behave as a reasonable electrochromic material. Distinctive color changes with short response times, high optical contrast, and better optical and coulombic stabilities were only observed with CoPc-tdea-tCl film.