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Hydrothermal Route for Cutting Graphene Sheets into Blue‐Luminescent Graphene Quantum Dots
Author(s) -
Pan Dengyu,
Zhang Jingchun,
Li Zhen,
Wu Minghong
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200902825
Subject(s) - graphene , materials science , quantum dot , luminescence , photoluminescence , hydrothermal circulation , nanotechnology , hydrothermal synthesis , optoelectronics , chemical engineering , engineering
Water‐soluble graphene quantum dots (GQDs, ca. 10 nm in diameter) that exhibit bright blue photoluminescence (PL) are prepared by hydrothermal (chemical) cutting of oxidized graphene sheets (see figure). The mechanisms of the cutting and luminescence are discussed. This discovery of PL of GQDs may extend the range of application of graphene‐based materials to optoelectronics and biological labeling.