The exploration of high-performance solution-processible host materials for blue and white electrophosphorescent devices is a key and fundamental challenge in the ongoing development of organic semiconductors. Herein, two solution-processible resonance host materials with self-adaptive characteristics are delicately designed and constructed. Because of the dynamic tautomerization upon resonance variation, these smart hosts show self-adaptive and selectively enhanced charge carrier flux at high triplet energy levels. Conferred by the resonance molecules, solution-processed blue and white devices exhibit excellent maximum current efficiencies (CEs) of 29.8 and 57.3 cd A⁻¹, and external quantum efficiencies (EQEs) up to 14.5% and 23.5%, respectively. Our works highlight the significant progress of the solution-processed phosphorescent organic light-emitting diodes (PhOLEDs) using resonance host molecules, potentially furnishing a leap forward in constructing advanced organic semiconductors for next-generation optoelectronic devices.

探索用于蓝色和白色电致磷光器件的高性能溶液可加工主体材料是有机半导体不断发展的关键和根本性挑战。在此，精心设计和构造了两种具有自适应特性的可溶液处理的共振主体材料。由于共振变化时会发生动态互变异构，因此这些智能主机在高三重态能级下显示出自适应和选择性增强的载流子通量。通过共振分子，溶液处理的蓝色和白色器件显示出出色的29.8和57.3 cd A ^-1的最大电流效率（CE）和外部量子效率（EQE）分别高达14.5％和23.5％。我们的工作突出了使用共振主体分子进行溶液处理的磷光有机发光二极管（PhOLED）的重大进展，这可能为构建用于下一​​代光电器件的先进有机半导体提供了飞跃。