4TCzBN is a derivative of carbazol benzonitrile. Its fluorescence peak is located at 456nm, and a new host-σ-guest emitter can be synthesized by grafting with host molecules to improve device performance. It is often used in either white or blue highly efficient TADF-OLED devices.
[1] ;Liu D, et al. Constructing host-σ-guest structures to optimize the efficiency of non-doped solution-processed OLEDs. Journal of Materials Chemistry C. 2020; 9: 1221-1227.
[2] Jakoby M, et al. Method for accurate experimental determination of singlet and triplet exciton diffusion between thermally activated delayed fluorescence molecules. Chemical Science. 2021; 12: 1121-1125.
