Hydrothermal Route for Cutting Graphene Sheets into Blue‐Luminescent Graphene Quantum Dots

Dengyu Pan(Shanghai University), Jingchun Zhang(Shanghai University), Zhen Li(Shanghai University), Minghong Wu(Shanghai University)
Advanced Materials
December 10, 2009
10.1002/adma.200902825
Cited by 2,830

Abstract

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.

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