A Platform to Synthesize a Soluble Poly(3,4-Ethylenedioxythiophene) Analogue

Ertan S., KAYNAK C., Cihaner A.

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, vol.55, no.23, pp.3935-3941, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 55 Issue: 23
  • Publication Date: 2017
  • Doi Number: 10.1002/pola.28779
  • Journal Name: JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3935-3941
  • Keywords: electrochromism, PEDOT, polyhedral oligomeric silsesquioxane, POSS, thiophene, LIGHT-EMITTING MATERIALS, HIGH-CONTRAST, ELECTROCHROMIC PROPERTIES, SILSESQUIOXANE, POLYMER, POSS, POLYFLUORENES, DERIVATIVES, DEVICES
  • Middle East Technical University Affiliated: Yes

Abstract

Alkyl-substituted polyhedral oligomeric silsesquioxane (POSS) cage is combined with 3,4-ethylenedioxythiophene under the same roof. The corresponding monomer called EDOT-POSS is used to get soluble poly(3,4-ethylenedioxythiophene) (PEDOT-POSS) analogue. Both chemically and electrochemically obtained polymers are soluble in common organic solvents like dichloromethane, chloroform, tetrahydrofuran, and so forth. The PEDOT-POSS has somewhat higher band gap (1.71 eV at 618 nm) than its parent PEDOT (1.60 eV at 627 nm) and as expected the PEDOT-POSS exhibits higher optical contrast (74% at 618 nm) and coloration efficiency (582 cm(2)/C for 100% switching), lower switching time (0.9 s), higher electrochemical stability (93% of its electroactivity retains after 5000 cycles under ambient conditions) when compared to the PEDOT. A number of advantages of the PEDOT-POSS over the PEDOT can make it a promising material in the areas of electro-optical applications. (C) 2017 Wiley Periodicals, Inc.