Photoinduced Step-Growth Polymerization of N-Ethylcarbazole

Sari E., Yilmaz G., KOYUNCU S., Yağcı Y.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol.140, no.40, pp.12728-12731, 2018 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 140 Issue: 40
  • Publication Date: 2018
  • Doi Number: 10.1021/jacs.8b08668
  • Journal Name: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.12728-12731
  • Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

A novel method for photochemical step growth synthesis of poly(N-ethylcarbazole) (PEC) via consecutive diphenyl iodonium hexafluorophospate (Ph2I+PF6-) mediated electron transfer and coupling reactions is reported. The photoinduced electron transfer reaction of the excited N-ethylcarbazole (EC) in the presence of Ph2I+PF6- as the oxidizing salt proceeded efficiently giving EC radical cations (EC+center dot). Subsequently, the protons released concomitantly with coupling of two EC radical cations. The successive reactions involving excitation, electron transfer, proton release, and coupling lead to the formation of PEC. The electrochemical properties and surface morphology of the thin films of the formed polymers before and after dedoping were investigated by cyclic voltammetry, differential pulse voltammetry, and atomic force microscopy techniques, respectively.