Design of Metal-Free Polymer Carbon Dots: A New Class of Room-Temperature Phosphorescent Materials

Tao, Songyuan and Lu, Siyu and Geng, Yijia and Zhu, Shoujun and Redfern, Simon A. T. and Song, Yubin and Feng, Tanglue and Xu, Weiqing and Yang, Bai (2018) Design of Metal-Free Polymer Carbon Dots: A New Class of Room-Temperature Phosphorescent Materials. Angewandte Chemie. ISSN 00448249 DOI https://doi.org/10.1002/ange.201712662

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Abstract

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.

Item Type:	Article
Uncontrolled Keywords:	2017AREP; IA73
Subjects:	03 - Mineral Sciences
Divisions:	03 - Mineral Sciences
Journal or Publication Title:	Angewandte Chemie
Identification Number:	https://doi.org/10.1002/ange.201712662
Depositing User:	Sarah Humbert
Date Deposited:	09 Feb 2018 13:34
Last Modified:	09 Feb 2018 13:34
URI:	http://eprints.esc.cam.ac.uk/id/eprint/4095

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