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Bandgap-Like Strong Fluorescence in Functionalized Carbon Nanoparticles

Authors

  • Xin Wang,

    1. Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC 29634-0973 (USA), Fax: (+1) 864-656-6613
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  • Li Cao Dr.,

    1. Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC 29634-0973 (USA), Fax: (+1) 864-656-6613
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  • Sheng-Tao Yang,

    1. Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC 29634-0973 (USA), Fax: (+1) 864-656-6613
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  • Fushen Lu Dr.,

    1. Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC 29634-0973 (USA), Fax: (+1) 864-656-6613
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  • Mohammed J. Meziani Dr.,

    1. Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC 29634-0973 (USA), Fax: (+1) 864-656-6613
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  • Leilei Tian Dr.,

    1. Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC 29634-0973 (USA), Fax: (+1) 864-656-6613
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  • Katherine W. Sun,

    1. Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC 29634-0973 (USA), Fax: (+1) 864-656-6613
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  • Mathew A. Bloodgood,

    1. Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC 29634-0973 (USA), Fax: (+1) 864-656-6613
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  • Ya-Ping Sun Prof. Dr.

    1. Department of Chemistry and Laboratory for Emerging Materials and Technology, Clemson University, Clemson, SC 29634-0973 (USA), Fax: (+1) 864-656-6613
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  • This work was made possible by a grant from the NIH. L.C. was supported by a Susan G. Komen for the Cure Postdoctoral Fellowship. S.-T.Y. was a visiting student from Peking University, Beijing, China (the group of Prof. Haifang Wang and Prof. Yuanfang Liu). K.W.S. and M.A.B. were research participants supported by Palmetto Academy, an education-training program managed by the South Carolina Space Grant Consortium.

Abstract

original image

Quantum of solace: Fluorescent carbon dots (surface-passivated carbon nanoparticles) are developed as an alternative to classical semiconductor quantum dots. Gel column chromatography afforded carbon dots with emission yields close to 60 %. Their optical properties resemble band-gap transitions found in nanoscale semiconductors, thus suggesting that nanoscale carbon particles acquire essentially semiconductorlike characteristics.

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