Available in sublimed grade for highly efficient TADF-OLED devices, (9,9'-(4,4'-Sulfonylbis(4,1-phenylene))bis(3,6-di-tert -butyl-9H-carbazole), DTC-DPS, BuCz-DPS, t-Cz-DPS, CAS No. 1396165-20-0, Sublimed ≥99.0%

Cz-PS has an electron deficient diphenylsulfonyl core with two electron donating di-tert-butyl substituted carbazolyl peripheral end groups. The bulky tert-butyl substituents can not only stabilize the molecule by blocking the electron rich 3,6-position to prevent the formation of dimers but also, they can effectively prevent the formation of the excimers.

Bis[4-(3,6-di-tert-butylcarbazole)phenyl]sulfone demonstrated deep-blue emission and the OLED with the dopant achieved a high EQE of 9.9% by using DPEPO as the host. Meanwhile, the OLED device suffered from a sharp efficiency roll-off at high current density, primarily caused by the relatively large energy gap between the S1 and T1 states (ΔEST = 0.32 eV).

General Information

Chemical Structure