Synthesis and Characterization of AIE-Active B-N-Coordinated Phenalene Complexes

Yubin Fu, Junzhi Liu, Zhongbin Wu, Jan J. Weigand, Xinliang Feng

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Organoboron compounds provide a new line to tune the electronic structures of π-conjugated molecules, which is critical to the development of new organic semiconductor materials. In this work, we demonstrate the synthesis of two novel boron-nitrogen (B-N) coordinated phenalene complexes (BNP-PX and BNP-PA) by employing BN phenalene (BNP) as the acceptor unit and phenoxazine/phenylphenazine groups as the donors. Based on single-crystal X-ray analysis, both BNP-PX and BNP-PA possess highly twisted conformations with the dihedral angles of 76.6 ° and 70.5 °, respectively. The photophysical properties of BNP-PX and BNP-PA are elucidated through UV-vis absorption, fluorescence spectroscopy, and theoretical calculations. In addition, BNP-PX exhibits a large Stokes shift (8,033 cm -1) and excellent aggregated-induced emission behavior. The red organic light-emitting diode device was fabricated based on compound BNP-PX, manifesting its promising application in organic optoelectronic devices.

Original languageEnglish
Pages (from-to)240-247
Number of pages8
JournalOrganic Materials
Volume2
Issue number3
DOIs
StatePublished - 30 Sep 2020
Externally publishedYes

Keywords

  • AIE effect
  • BN-coordinated compounds
  • donor-acceptor
  • large Stokes shift
  • OLED device

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