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Design of Metal‐Free Polymer Carbon Dots: A New Class of Room‐Temperature Phosphorescent Materials |
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| Authors: | Songyuan Tao Dr Siyu Lu Yijia Geng Dr Shoujun Zhu Prof Simon A T Redfern Yubin Song Tanglue Feng Prof Weiqing Xu Prof Bai Yang |
| Institution: | 1. State Key Laboratory of Supramolecular Structure, and Materials, College of Chemistry, Jilin University, Changchun, P. R. China;2. College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, China;3. Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, USA;4. University of Cambridge, Department of Earth Sciences, Cambridge, UK |
| 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. |
| Keywords: | carbon materials luminescence nanoparticles phosphorescence polymers |