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

Advanced Materials · 2009 · Vol. 22(6) · pp. 734–738
Dengyu PanJingchun ZhangZhen LiMinghong Wu

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.

Carbon and Quantum Dots ApplicationsGraphene and Nanomaterials ApplicationsGraphene research and applicationsGrapheneMaterials scienceQuantum dotLuminescencePhotoluminescenceHydrothermal circulationNanotechnologyHydrothermal synthesisOptoelectronicsChemical engineering

MeSH terms

CarbonSpectrophotometry, UltravioletNanotubes, CarbonQuantum DotsLuminescencePhotoelectron Spectroscopy
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References
Energy Gaps in Graphene Nanoribbons
Physical Review Letters · 2006 · 4,996 citations
The rise of graphene
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Journal of the American Chemical Society · 2006 · 4,926 citations
Energy Band-Gap Engineering of Graphene Nanoribbons
Physical Review Letters · 2007 · 5,147 citations
Processable aqueous dispersions of graphene nanosheets
Nature Nanotechnology · 2008 · 9,020 citations
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