Graphene Quantum Dots: Facile Synthetic Method for Pristine Graphene Quantum Dots and Graphene Oxide Quantum Dots: Origin of Blue and Green Luminescence (Adv. Mater. 27/2013)

Authors

  • Fei Liu,

    1. Department of Chemical and Biomolecular, Engineering (BK21 program) and Institute for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Min-Ho Jang,

    1. Department of Physics, Graduate School of Nanoscience & Technology (WCU) and Graphene Research Center of KI for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
    Current affiliation:
    1. These authors contributed equally to this work.
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  • Hyun Dong Ha,

    1. Department of Chemical and Biomolecular, Engineering (BK21 program) and Institute for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
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  • Je-Hyung Kim,

    1. Department of Physics, Graduate School of Nanoscience & Technology (WCU) and Graphene Research Center of KI for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
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  • Yong-Hoon Cho,

    Corresponding author
    1. Department of Physics, Graduate School of Nanoscience & Technology (WCU) and Graphene Research Center of KI for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
    • Department of Physics, Graduate School of Nanoscience & Technology (WCU) and Graphene Research Center of KI for the NanoCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea.
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  • Tae Seok Seo

    Corresponding author
    1. Department of Chemical and Biomolecular, Engineering (BK21 program) and Institute for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
    • Department of Chemical and Biomolecular, Engineering (BK21 program) and Institute for the BioCentury, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
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Abstract

original image

Pristine graphene quantum dots and graphene oxide quantum dots are synthesized by chemical exfoliation from 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. Further details can be found in the article by Tae Seok Seo, Yong-Hoon Cho, and co-workers on page 3657.

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