4.7 Article

Room-Temperature Phosphorescence in the Amorphous State Enhanced by Copolymerization and Host-Guest Complexation

期刊

MACROMOLECULES
卷 55, 期 21, 页码 9802-9809

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.2c00680

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资金

  1. National Key Research and Development Program of China [2021YFA0910100]
  2. National Natural Science Foundation of China [22035006]
  3. Zhejiang Provincial Natural Science Foundation of China [LD21B020001]
  4. Zhejiang University Shanghai Institute for Advanced Study [SN-ZJU-SIAS-006]

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This study presents a new strategy to enhance organic phosphorescence in the amorphous state through copolymerization and host-guest complexation. The random copolymer synthesized exhibited satisfactory phosphorescent behavior and the quantum yield and lifetime were further improved after complexation with K+. This work opens up new possibilities for the development of phosphorescent polymeric materials with advantages of simple preparation, processability, and controllability.
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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