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Fei Liu, Min-Ho Jang, Hyun Dong Ha, Je-Hyung Kim, Yong-Hoon Cho and Tae Seok Seo Facile Synthetic Method for Pristine Graphene Quantum Dots and Graphene Oxide Quantum Dots: Origin of Blue and Green Luminescence Advanced Materials 25

Article first published online: 27 MAY 2013 | DOI: 10.1002/adma.201300233

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Pristine graphene quantum dots and graphene oxide quantum dots are synthesized by chemical exfoliation from the graphite nanoparticles with high uniformity in terms of shape (circle), size (less than 4 nm), and thickness (monolayer). The origin of the blue and green photoluminescence of GQDs and GOQDs is attributed to intrinsic and extrinsic energy states, respectively.

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