Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 28, Pages 11206-11216Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201915433
Keywords
amorphous materials; emission; host-guest systems; hydrogen bonds; phosphorescence
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Funding
- NSFC [21788102, 21722603, 21871083]
- Shanghai Municipal Science and Technology Major Project [2018SHZDZX03]
- Shanghai Municipal Education Commission
- Shanghai Education Development Foundation [19SG26]
- Innovation Program of Shanghai Municipal Education Commission [2017-01-07-00-02-E00010]
- Fundamental Research Funds for the Central Universities
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Materials displaying room-temperature phosphorescence (RTP) have been attracting wide attention in recent years due to their distinctive characteristics including long emissive lifetime and large Stokes shift, and their various applications. Most synthesized RTP materials are metal complexes that display enhanced intersystem crossing and crystallization is a common way to restrict nonradiative transition. Amorphous metal-free RTP materials, which do not rely on expensive and toxic metals and can be prepared in a straightforward fashion, have become an important branch of the field. This Minireview summarizes recent progress in amorphous RTP materials according to the approaches used to immobilize phosphors: host-guest interactions, molecule doping, copolymers, and small-molecule self-assembly. Some existing challenges and insightful perspectives are given at the end of the Minireview, which should benefit the future design and development of amorphous metal-free RTP materials.
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