Phthalimide-based "D-N-A" emitters with thermally activated delayed fluorescence and isomer-dependent room-temperature phosphorescence properties

被引：22
|
作者：
Zhang, Liang [1 ,2 ]
Li, Meng [1 ]
Hu, Tai-Ping [3 ]
Wang, Yin-Feng [4 ]
Shen, Yi-Fan [4 ]
Yi, Yuan-Ping [3 ,4 ]
Lu, Hai-Yan [4 ]
Gao, Qing-Yu [2 ]
Chen, Chuan-Feng [1 ,4 ]
机构：
[1] Chinese Acad Sci, Inst Chem, CAS Key Lab Mol Recognit & Funct, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
[2] China Univ Min & Technol, Coll Chem Engn, Xuzhou 221116, Jiangsu, Peoples R China
[3] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing 100190, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CHEMICAL COMMUNICATIONS | 2019年 / 55卷 / 81期
基金：
中国国家自然科学基金;
关键词：
TRIPLET EXCITED-STATES; DESIGN; EMISSION;
D O I：
10.1039/c9cc06384f
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Phthalimide-based "D-N-A" emitters o-AI-Cz, m-AI-Cz and p-AI-Cz showed TADF and RTP properties due to their small Delta E-ST in both film and crystalline states. In particular, o-AI-Cz exhibited an ultralong RTP with a lifetime of 602 ms in air and remarkable afterglow, which could allow it to be used as a security ink for application in anti-counterfeiting materials. Moreover, o-AI-Cz showed intense intramolecular interaction between the donor and the acceptor subunits, while p-AI-Cz could form regular hexagonal pores with a diameter of 13.171 angstrom in the solid state, which might result in their different RTP properties.
引用
收藏
页码：12172 / 12175
页数：4
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