Two novel aromatic hydrocarbons: facile synthesis, photophysical properties and applications in deep-blue electroluminescence

Zhixiang Gao, Yuling Wu, Wenshan Qu, Tianbao Li, Tingting Yang, Xiaxia Fan, Lijuan Dong, Yunlong Shi, Xuerui Cheng, Yufen Ren, Peng Tao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Two efficient novel fluorescent naphthalene and fluorene-based aromatic hydrocarbon isomers (1and2) are prepared and investigated for organic electroluminescence. These compounds show bright violet to deep-blue emission, narrow full width at half maximum (52 nm), and high photoluminescence efficiency (e.g.0.61 in CH2Cl2, 0.67 in film). Alternation of substituent position on the naphthalene moiety can give rise to remarkable emission variation. The relatively large torsion angle between naphthalene and fluorene suppresses the p-p interactions by weakening the intermolecular interactions in the solid state, which can result in highly efficient fluorescence. Moreover, the 1931 Commission Internationale de L'Eclairage coordinates and maximum emission peak for deep-blue electroluminescence based on1are (0.16, 0.08) and 410 nm, respectively.

Original languageEnglish
Pages (from-to)16687-16692
Number of pages6
JournalRSC Advances
Volume10
Issue number28
DOIs
Publication statusPublished - 28 Apr 2020
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this