Facile Synthetic Method for Pristine Graphene Quantum Dots and Graphene Oxide Quantum Dots: Origin of Blue and Green Luminescence

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 GOQ...

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Published inAdvanced materials (Weinheim) Vol. 25; no. 27; pp. 3657 - 3662
Main Authors Liu, Fei, Jang, Min-Ho, Ha, Hyun Dong, Kim, Je-Hyung, Cho, Yong-Hoon, Seo, Tae Seok
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 19.07.2013
WILEY‐VCH Verlag
Subjects
Graphene
graphene oxide quantum dot
graphene quantum dot
Graphite
graphite nanoparticels
Luminescence
monolayer
Nanoparticles
Origins
Oxides
photoluminescence
Quantum dots
Variability
graphite nanoparticels
monolayer
photoluminescence
graphene quantum dot
graphene oxide quantum dot
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Summary: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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ISSN:0935-9648
1521-4095
1521-4095
DOI:10.1002/adma.201300233