Phosphorescent Properties of Phenylcarbazole Derivatives Based on Carbazolyl Substitution
闫子昕 1杨文君1
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作者信息
1. 青岛科技大学 橡塑材料与工程教育部重点实验室,山东 青岛 266042
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摘要
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.
Abstract
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.
关键词
室温磷光/咔唑基衍生物/酰胺基团/长寿命
Key words
room temperature phosphorescence/carbazolyl derivative/carbamoyl/long life
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