Strong luminescence behavior of mono- and dimeric imidazoquinazolines: Swift OLED degradation under electrical current

Rampal Pandey, Gábor Méhes, Ashish Kumar, Roop Shikha Singh, Amit Kumar, Chihaya Adachi, Daya Shankar Pandey

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

Design and synthesis of novel mono- and dimeric quinazoline derivatives (+)-6-methyl-6-pyridin-2-yl-5,6-dihydrobenzo[4,5]imidazo[1,2-c]quinazoline (1) and (+)-6-[(6-methyl-5,6-dihydrobenzo-[4,5]imidazo[1,2-c]quinazolin-6-yl)-pyridin-2-yl]-6-methyl-5,6-dihydro-benzo-[4,5]imidazo-[1,2-c]quinazoline (2) have been described. Both 1 and 2 have been characterized by elemental analyses, FT-IR, 1H and 13C NMR, HRMS spectroscopic studies and their structures authenticated by X-ray single crystal analyses. Photophysical properties of these compounds have been studied by UV/VIS absorption and fluorescence spectroscopy and transient photoluminescence analysis in solution, powder, and non-doped (neat) and doped vacuum-deposited films. A broad emission spectrum spanning most of the visible range and good thermal stability indicated promising application of 1 and 2 as OLED emitters. Unfortunately, under current flow we observed rapid device degradation, presumably to be related to free –NH moiety in these compounds.

本文言語英語
ページ(範囲)252-260
ページ数9
ジャーナルJournal of Luminescence
181
DOI
出版ステータス出版済み - 1 1 2017

All Science Journal Classification (ASJC) codes

  • 生物理学
  • 原子分子物理学および光学
  • 化学 (全般)
  • 生化学
  • 凝縮系物理学

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