Azomethine coupled fluorene-thiophene-pyrrole based copolymers: Electrochromic applications


Yildirim M. , KAYA İ. , AYDIN A.

REACTIVE & FUNCTIONAL POLYMERS, vol.73, no.9, pp.1167-1174, 2013 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 73 Issue: 9
  • Publication Date: 2013
  • Doi Number: 10.1016/j.reactfunctpolym.2013.06.001
  • Title of Journal : REACTIVE & FUNCTIONAL POLYMERS
  • Page Numbers: pp.1167-1174
  • Keywords: Electrocopolymerization, Electrochromism, Copolymerization ratio, ELECTROCHEMICAL PROPERTIES, CONDUCTING POLYMERS, ELECTRICAL-CONDUCTIVITY, THERMAL-STABILITY, POLYTHIOPHENE, DERIVATIVES, DEVICES, ELECTROPOLYMERIZATION, SUBSTITUENT, SOLUBILITY

Abstract

Two new copolymers were synthesized via the electrochemical copolymerization of 4,4'-(9H-fluorene-9,9-diyl)bis(N-(thiophen-2-ylmethylene)aniline) (FTMA) with thiophene (Th) and pyrrole (Py). According to the X-ray Photoelectron Spectroscopy (XPS) measurements, the polymers FTMA-co-Th and FTMA-co-Py possessed monomer ratios of nearly 1/5 (FTMA/Th) and 1/2 (FTMA/Py). Spectroelectrochemical investigations showed that FTMA-co-Th was a red color at low potentials and a blue color at high potentials. FTMA-co-Py was purple at low potentials and dark gray at high potentials. Spectroelectrochemical monitoring showed good absorption recoveries over repeated potential scans. As a result, FTMA-co-Th and FTMA-co-Py may be good candidates for electrochromic devices (ECDs) and could be used as coloring agents in electrochromic layers in ECDs. (C) 2013 Elsevier Ltd. All rights reserved.