Author(s): Wang, G (Wang, Gang); Xu, AL (Xu, Anli); He, P (He, Peng); Guo, QL (Guo, Qinglei); Liu, ZD (Liu, Zhiduo); Wang, ZW (Wang, Ziwen); Li, JR (Li, Jiurong); Hu, XR (Hu, Xurui); Wang, ZH (Wang, Zihao); Chen, D (Chen, Da); Wang, YQ (Wang, Yongqiang); Yang, SW (Yang, Siwei); Ding, GQ (Ding, Guqiao)
Source: MATERIALS LETTERS Volume: 242 Pages: 156-159 DOI: 10.1016/j.matlet.2019.01.139 Published: MAY 1 2019
Abstract: Lattice phosphorus (P) doping has been demonstrated as an effective method for tuning the fluorescence of graphene quantum dots (GQDs). Due to the many possible oxidation states of P, lattice P-doped GQDs (P-GQDs) are still difficult to synthesize. Here, we report the green preparation of P-GQDs via solvothermal treatment of lecithin with high yield (71 wt%). The resulting P-GQDs show controllable emission wavelength (457-632 nm) and high quantum yield (0.54-0.73), and have demonstrated potential for applications in fluorescent bio-imaging. (C) 2019 Elsevier B.V. All rights reserved.
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