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 language | English |
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Pages (from-to) | 240-247 |
Number of pages | 8 |
Journal | Organic Materials |
Volume | 2 |
Issue number | 3 |
DOIs | |
State | Published - 30 Sep 2020 |
Externally published | Yes |
Keywords
- AIE effect
- BN-coordinated compounds
- donor-acceptor
- large Stokes shift
- OLED device