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Design of Metal‐Free Polymer Carbon Dots: A New Class of Room‐Temperature Phosphorescent Materials
Author(s) -
Tao Songyuan,
Lu Siyu,
Geng Yijia,
Zhu Shoujun,
Redfern Simon A. T.,
Song Yubin,
Feng Tanglue,
Xu Weiqing,
Yang Bai
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201712662
Subject(s) - intersystem crossing , phosphorescence , rational design , polymer , materials science , carbon fibers , covalent bond , metal , nanotechnology , design elements and principles , chemistry , computer science , organic chemistry , fluorescence , composite number , physics , quantum mechanics , software engineering , nuclear physics , singlet state , metallurgy , composite material , excited state
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.