Chunmiao Han, Zhensong Zhang, Dr. Hui Xu, Jing Li, Dr. Guohua Xie, Dr. Runfeng Chen, Prof. Yi Zhao and Prof. Wei Huang Controllably Tuning Excited-State Energy in Ternary Hosts for Ultralow-Voltage-Driven Blue Electrophosphorescence Angewandte Chemie International Edition 51
A series of dibenzofuran-based ternary hosts were designed and prepared. The singlet energy levels and carrier injecting/transporting abilities were adjusted on the basis of the mixed meso and short-axis linkages (see picture). By harmonizing the optical and electrical properties, the blue-emitting diodes realized highly efficient blue electrophosphorescence with ultralow driving voltages.
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