Steric Switching for Thermally Activated Delayed Fluorescence by Controlling the Dihedral Angles between Donor and Acceptor in Organoboron Emitters

• Published in: ACS applied materials & interfaces Vol. 11; no. 11; pp. 10768 - 10776
• Main Authors: Wu, Tien-Lin, Lo, Shih-Han, Chang, Yu-Che, Huang, Min-Jie, Cheng, Chien-Hong
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 20.03.2019
• Subjects: color; emissions; fluorescence; materials science; moieties; photoluminescence; thermally activated delayed fluorescence; organoboron emitter; organic light-emitting diode; dihedral angle; deep-blue color

Five emitters CzAZB, tBuCzAZB, tmCzAZB, dmAcAZB, and PxzAZB based on dibenzo-1,4-azaborine as the electron acceptors and two identical amine groups as the donors were designed and synthesized. The dihedral angles between the planes of dibenzo-1,4-azaborine acceptors and amine-based donors greatly af...