Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 9, Pages 2393-2398Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201712662
Keywords
carbon materials; luminescence; nanoparticles; phosphorescence; polymers
Categories
Funding
- National Science Foundation of China (NSFC) [51433003, 51373065, 21504029]
- National Key Research and Development Program of China [2016YFB0401701]
- JLU Science and Technology Innovative Research Team [2017TD-06]
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Polymer carbon dots (PCDs) are proposed as a new class of room-temperature phosphorescence (RTP) materials. The abundant energy levels in PCDs increase the probability of intersystem crossing (ISC) and their covalently crosslinked framework structures greatly suppress the nonradiative transitions. The efficient methods allow the manufacture of PCDs with unique RTP properties in air without additional metal complexation or complicated matrix composition. They thus provide a route towards the rational design of metal-free RTP materials that may be synthesized easily. Furthermore, we find that RTP is associated with a crosslink-enhanced emission (CEE) effect, which provides further routes to design improved PCDs with diverse RTP performance. Our results show the potential of PCDs as a universal route to achieve effective metal-free RTP.
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