Synthesis, photophysical and electrochemical properties of aza-boron-diquinomethene complexes

Wang, Danfeng, Liu, Rui, Chen, Chen, Wang, Shifan, Chang, Jin, Wu, Chunhui, Zhu, Hongjun, & Waclawik, Eric R. (2013) Synthesis, photophysical and electrochemical properties of aza-boron-diquinomethene complexes. Dyes and Pigments, 99(1), pp. 240-249.

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Abstract

A series of aza-boron-diquinomethene (aza-BODIQU) complexes with different aryl-substituents (B1–B6) were synthesized and characterized. Their photophysical properties were investigated systematically via spectroscopic and theoretical methods. All complexes exhibit strong 1π–π* absorption bands and intense fluorescent emission bands in the visible spectral region at room temperature. The fluorescence spectra in solution show the mirror image features of the S0→S1 absorption bands, which can be assigned to the 1π–π*/1ICT (intramolecular charge transfer) emitting states. Except for B6, all complexes exhibit high photoluminescence quantum yields (ΦPL = 0.47–0.93). The spectroscopic studies and theoretical calculations indicate that the photophysical properties of these aza-BODIQUs can be tuned by the appended aryl-substituents, which would be useful for rational design of boron–fluorine complexes with high emission quantum yield for organic light-emitting applications.

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ID Code: 67708
Item Type: Journal Article
Refereed: Yes
Keywords: Fluorescence, Synthesis, Optical properties, Electrochemical properties, Boronefluorine complexes, DFT calculations
DOI: 10.1016/j.dyepig.2013.05.009
ISSN: 0143-7208
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 24 Feb 2014 22:58
Last Modified: 24 Feb 2014 22:58

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