摘要
为得到一种新的纯有机室温磷光材料,本文采用咔唑与溴作为修饰基团,设计并合成了一种新型的基于三蝶烯分子的电子给体-电子受体(D-A)型纯有机磷光材料Cz-Br。利用TD-DFT计算从理论上对分子的轨道结构进行了分析;利用核磁共振氢谱、核磁共振碳谱、质谱、X-射线单晶衍射等方法对其结构进行了相关表征;利用紫外-可见光谱仪、稳态/瞬态荧光光谱仪等仪器对其光物理性质进行了研究与探讨。结果表明,在室温下目标化合物用紫外光激发后在无定形态就具有肉眼可见的延迟发光现象,在晶体形态具有较长寿命(0.212 s)的室温磷光性质,可为目前的有机室温磷光材料设计提供参考。
In order to obtain a new organic room temperature phosphorous(RTP)material,a novel D-A type RTP material Cz-Br based on triptycene is designed and synthesized by using carbazole and bromine as modification groups.Molecular orbitals of these compounds are systematically studied by TD-DFTcalculations,their structures are completely characterized and studied by 1 H,13 CNMR and XRD,and their optical properties are studied by UV-Vis spectrometer and steady-state/lifetime spectrofluorometer.A macroscopic delayed fluorescence of Cz-Br is observed at an amorphous state,with the results indicating that Cz-Br possessed a long life(0.212 s)phosphorescence emission in the crystalline state at room temperature,providing some reference for the current design strategy of organic room-temperature phosphorescence materials.
作者
雷普一
陈磅宽
LEI Puyi;CHEN Pangkuan(School of Chemistry and Chemical Engineering,Beijing Institute of Technology,Beijing 102488,China;Beijing Key Laboratory of Photoelectric/Electrophotonic Conversion Materials,Beijing 102488,China)
出处
《西安理工大学学报》
CAS
北大核心
2021年第3期386-396,共11页
Journal of Xi'an University of Technology
基金
国家自然科学基金资助项目(21772012)。
关键词
三蝶烯
电子给体-电子受体
室温磷光
triptycene
donor-acceptor
room-temperature phosphorescence
