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Thermally Activated Delayed Fluorescence Materials Based on Carbazole/Sulfone

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Abstract:

A series of bipolar materials for thermally activated delayed fluorescence (TADF) based on carbazole and diphenylsulfone, is synthesized by Ulmann and Suzuki coupling reactions. In these materials, the 3,6-di-tert-butylcarbazole and N-phenylcarbazole group as donors are linked at the 3-, 4-position of diphenyl sulfone. The electronic, photophysical and electrochemical properties of these materials are studied by extensive UV-vis, fluorescence spectroscopic measurements, cyclic voltammetry as well as theoretical calculations. The energy gap between singlet and triplet (△EST) in these materials is tuned from 0.99 eV to 0.24 eV by changing the donor units and the positions of substitution.

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Periodical:

Advanced Materials Research (Volumes 1044-1045)

Pages:

158-163

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1044-1045.158

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Online since:

October 2014

Authors:

Bin Huang, Wei Jiang*, Yuan Yuan Liu, Ya An Zhang, Ya Ping Yang, Yu Dai, Xin Xin Ban, Huan Ge Xu, Yue Ming Sun

Keywords:

△Est, Bipolar, Carbazole, Sulfone, TADF

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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