Three new imidazole-derived moiety/spiro[fluorene-9,9′-xanthene] hybrid compounds, 1-phenyl-2-(4-(spiro[fluorene-9,9′-xanthen]-2-yl)phenyl)-1H-benzo[d]imidazole (SFX-PBI), 1-(4-(tert-butyl)phenyl)-2-(4-(spiro[fluorene-9,9′-xanthen]-2-yl)phenyl)-1H-phenanthro[9,10-d]imidazole (SFX-PPI), and 1-(4-(tert-butyl)phenyl)-4,5-diphenyl-2-(4-(spiro[fluorene-9,9′-xanthen]-2-yl)phenyl)-1H-imidazole (SFX-PIM), were successfully synthesized for highly efficient blue light-emitting devices. The thermal stabilities, photophysical and electrochemical properties of the hybrid compounds were investigated. These hybrid compounds exhibited strong deep blue emission in solutions. Furthermore, the vacuum-processed nondoped devices based on these compounds were fabricated, in which the device based on the compound SFX-PPI exhibited the best electroluminescence performance with a maximum brightness of 4542 cd/m², a maximum current efficiency of 4.51 cd/A and a maximum external quantum efficiency (EQE) of 5.03%.

三种新的咪唑衍生的部分/螺[芴-9,9'-an吨]杂化化合物，1-苯基-2-（4-（螺[芴-9,9'-黄嘌呤] -2-基]苯基）- 1 H-苯并[ d ]咪唑（SFX-PBI），1-（4-（叔丁基）苯基）-2-（4-（螺[芴-9,9'-黄嘌呤] -2-基）苯基）-1 H-菲并[9,10- d ]咪唑（SFX-PPI）和1-（4-（叔丁基）苯基）-4,5-二苯基-2-（4-（螺[芴- 9,9'-黄嘌呤] -2-基）苯基）-1 H-咪唑（SFX-PIM）合成成功用于高效蓝色发光器件。研究了杂化化合物的热稳定性，光物理和电化学性质。这些杂化化合物在溶液中表现出很强的深蓝色发射。此外，制造了基于这些化合物的真空处理非掺杂器件，其中基于化合物SFX-PPI的器件表现出最佳的电致发光性能，最大亮度为4542 cd / m ²，最大电流效率为4.51 cd / A和5.03％的最大外部量子效率（EQE）。