Molecular Engineering through Control of Structural Deformation for Highly Efficient Ultralong Organic Phosphorescence

被引：0
|
作者：
Yin, Zheng [1 ,3 ]
Gu, Mingxing [2 ]
Ma, Huili [2 ]
Jiang, Xueyan [2 ]
Zhi, Jiahuan [2 ]
Wang, Yafei [1 ]
Yang, Huifang [1 ]
Zhu, Weiguo [1 ,3 ]
An, Zhongfu [2 ]
机构：
[1] National Experimental Demonstration Center for Materials Science and Engineering, Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Jiangsu Engineering L
[2] Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing,211816, China
[3] College of Chemistry, Xiangtan University, Xiangtan,411105, China
来源：
Advanced Materials | 2020年 / 60卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Bromine compounds - Cryptography - Crystal engineering - Efficiency - Single crystals;
D O I：
10.1002/ANGE.202011830
中图分类号：
学科分类号：
摘要：
It is an enormous challenge to achieve highly efficient organic room-temperature phosphorescence (RTP) with a long lifetime. We demonstrate that, by bridging the carbazole and halogenated phenyl ring with a methylene linker, RTP phosphors CzBX (X=Cl, Br) present high phosphorescence efficiency (ΦPh). A ΦPh up to 38% was obtained for CzBBr with a lifetime of 220 ms, which is much higher than that of compounds CzPX (X=Cl, Br) with a C-N bond as a linker (ΦPh3 methylene linkers restrain the nonradiative decay channel, leading to the high phosphorescence efficiency in CzBBr. This research paves a new road toward highly efficient and longlived RTP materials with potential applications in anticounterfeiting or data encryption. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
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页码：2086 / 2091
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