磷光
共聚物
无定形固体
化学
高分子化学
冠醚
量子产额
光化学
化学工程
材料科学
聚合物
有机化学
荧光
物理
离子
工程类
量子力学
作者
Weijie Zhu,Hao Xing,Errui Li,Huangtianzhi Zhu,Feihe Huang
出处
期刊:Macromolecules
[American Chemical Society]
日期:2022-10-20
卷期号:55 (21): 9802-9809
被引量:8
标识
DOI:10.1021/acs.macromol.2c00680
摘要
Organic room-temperature phosphorescence (RTP) has received much attention, and yet most organic RTP materials are in the crystalline state, limiting their wide applications. Herein, we provide a new strategy to enhance RTP in the amorphous state by copolymerization and host–guest complexation. A random copolymer, prepared from acrylamide and a crown ether derivative, shows not only satisfactory RTP but also improved phosphorescent behavior in the presence of K+. Acrylamide units in the polymeric material provide sufficient hydrogen bonds to immobilize the crown ether. Moreover, the phosphorescence efficiency of the copolymer can be adjusted by host–guest recognition, and a promoted quantum yield as well as a longer lifetime are observed after the complexation with K+. Information encryption is also successfully realized by taking advantage of the different phosphorescence lifetimes of these polymers. This work offers a new avenue for constructing RTP polymeric materials with the advantages of simple preparation, processability, and controllability.
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