Triarylamine-combined nitronyl nitroxide and its hole-transporting property

Takashi Kurata, Kenichiroh Koshika, Fumiaki Kato, Junji Kido, Hiroyuki Nishide*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


N,N-Bis(4-methoxyphenyl)-4-(1-oxyl-3-oxide-4,4,5,5-tetramethylimidazolin -2-yl)phenylamine (1) was synthesized as a durable nitronyl nitroxide radical combined with a triarylamine moiety. Cyclic voltammetry and UV-Vis absorption spectra during the electrochemical oxidation of 1 revealed that the first redox was derived from the triarylamine moiety. The ionization potential of 1 was measured by photoelectron spectroscopy to be -5.4 eV, which was appropriate as a hole-transporting material. A single-layer hole-only device was fabricated with the radical molecule 1 dispersed in polycarbonate (ITO/1:polycarbonate/Al): The radical-layer exhibited a maximum current density of 0.2 mA/cm2, which was applicable for organic electronic devices.

Original languageEnglish
Pages (from-to)1776-1780
Number of pages5
Issue number9-11
Publication statusPublished - 2007 Jun 15


  • Hole-transporting material
  • Nitronyl nitroxide
  • Redox reaction
  • Triarylamine

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry


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