Advanced Materials

Highly Efficient Carbazole-π-Dimesitylborane Bipolar Fluorophores for Nondoped Blue Organic Light-Emitting Diodes


  • Partial financial support from the National Science Council, Taiwan, is gratefully acknowledged. This work is also supported by the Ministry of Education, Taiwan, under the ATU plan.


Highly efficient blue emitters based on the Lewis acid–base carbazole-π-dimesitylborane framework are synthesized and characterized. Among four bipolar blue fluorophores, the nondoped OLED fabricated with CzThB exhibits the best performance blue electroluminescence with CIEx, y (0.13,0.21), maximum electroluminance of 28 300 cd m−2 and external quantum efficiency of 6.9%.

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