用各种取代基取代咔唑已成为设计室温磷光(RTP)材料常用的分子设计策略，然而有效的取代基团仍然十分有限。本研究中，使用酰胺基团作为取代基对苯基咔唑上苯基的对位、间位和邻位进行取代，研究同分异构体间磷光性质的差异。这 3 种异构体晶体都表现出明亮和超长的RTP发射，在紫外光激发下分别具有长达 1。02，0。76 和 0。89 s 的超长磷光寿命，使酰胺基团成为一种新的有效的RTP促进策略。
Phosphorescent Properties of Phenylcarbazole Derivatives Based on Carbazolyl Substitution
Replacing carbazole with various substituents has become a common molecular de-sign strategy for designing Room Temperature Phosphorescence(RTP)materials,but effec-tive substituents are still very limited.In this study,we used a carbamoyl group as a sub-stituent to replace the para-,meta-,and ortho-phenyl on-phenylcarbazole for the first time to study the differences in phosphorescent properties between isomers.All three isomer crystals exhibit bright and ultra-long RTP emissions,with ultra-long phosphorescent life-times of up to 1.02,0.76 and 0.89 s respectively under ultraviolet excitation,making the carbamoyl group a new and effective RTP promotion strategy.
room temperature phosphorescencecarbazolyl derivativecarbamoyllong life
万方数据
维普
