Synthesis of a regular polymer containing pseudo-polyether cages

Cihaner A., Onal A.

SYNTHETIC METALS, vol.150, no.1, pp.39-45, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 150 Issue: 1
  • Publication Date: 2005
  • Doi Number: 10.1016/j.synthmet.2004.12.014
  • Journal Name: SYNTHETIC METALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.39-45
  • Keywords: electrochemical polymerization, chemical polymerization, ESR, polymer containing polyether cages, CROWN ETHERS, OXIDATION, DESIGN
  • Middle East Technical University Affiliated: Yes

Abstract

A new compound consisting of 2-thienyl units linked by polyether bridge has been synthesized and its electrochemical polymerization was performed via constant potential electrolysis (CPE) in an electrolytic solution containing 0.1 M tetrabutylammonium hexafluorophosphate (TBAPF(6)) dissolved in CH3CN. Chemical polymerization was carried out using FeCl3 as oxidizing agent. It is found that both methods gave the same polymer product without any cleavage of the polyether bridge between thiophene (Th) rings. Although as synthesized polymers exhibited no conductivity, they gain conductivity via chemical doping using 12 vapor exposure. The polymers were characterized using FTIR spectroscopic technique and 12 doping was monitored using in-situ electron spin resonance (ESR) spectroscopy. Thermal behavior of electrochemically prepared polymer was investigated using differential scanning calorimetry, DSC and thermogravimetric analysis, TGA. (c) 2005 Elsevier B.V. All rights reserved.