Synthesis and Characterization of a New Conducting Polymer Based on 4-(2,5-di-2-thiophen-2-yl-pyrrol-1-yl)-phthalonitrile

Yavuz A., Bezgin B., ÖNAL A. M.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.114, no.5, pp.2685-2690, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 114 Issue: 5
  • Publication Date: 2009
  • Doi Number: 10.1002/app.30269
  • Journal Name: JOURNAL OF APPLIED POLYMER SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2685-2690
  • Keywords: electrochemical polymerization, polythiophene, polypyrrole, electrochromism, fluorescence, FIELD-EFFECT TRANSISTOR, PI-CONJUGATED SYSTEMS, ELECTROCHROMIC DEVICES, COLORATION EFFICIENCY, FLUORESCENT POLYMER, POLYTHIOPHENE, CELLS, ELECTRODES
  • Middle East Technical University Affiliated: Yes

Abstract

A new conducting polymer was synthesized by electrochemical polymerization of 4-(2,5-di-2-thiophen-2-yl-pyrrol-1-yl)-2-phthalonitrile (SNS-PN). Electrochemical polymerization of SNS-PN was performed in acetonitrile/0.2M LiClO4 solvent/electrolyte couple. Characterizations of the resulting polymer P(SNS-PN) were carried out by cyclic voltammetry, UV-vis, and Fourier transform infrared (FTIR) spectroscopic techniques. Spectroelectrochemical studies revealed that P(SNS-PN) has an electronic band gap of 2.45 eV and exhibits electrochromic behavior. The switching ability of polymer was also monitored and the percentage transmittance change (Delta T%) was found as 24%. It is also found that P(SNS-PN) is fluorescent and its fluorescence intensity enhances in the presence of cations. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 114: 2685-2690, 2009