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Updated: Apr 18, 2026
Production and Targeting of Monovalent Quantum Dots
Published on: October 23, 2014
Synthesis of fluorinated and nonfluorinated graphene quantum dots through a new top-down strategy for long-time
Hanjun Sun1, Haiwei Ji, Enguo Ju
1Laboratory of Chemical Biology and Division of Biological Inorganic Chemistry, State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P.R. China); University of the Chinese Academy of Science, Beijing, 100039 (P.R. China).
Abstract:
Herein, a new strategy has been developed through combining a microwave-assisted technique with hydrothermal treatment to reduce graphene waste and improve production yield of graphene quantum dots (GQDs) prepared by top-down methods. By using fluorinated graphene oxide (FGO) as a raw material, fluorinated GQDs and nonfluorinated GQDs can be synthesized. Additionally, in the fluorinated GQDs, the protective shell supplied by fluorine improves the pH stability of photoluminescence and the strong electron-withdrawing group, -F, reduces the π-electron density of the aromatic structure; thus inhibiting reactivity toward singlet oxygen produced during irradiation and improving the photostability. Therefore, the as-prepared fluorinated GQDs with excellent photo- and pH stability are suitable for long-term cellular imaging.
