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Issue 7, 2012
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Graphene quantum dots with controllable surface oxidation, tunable fluorescence and up-conversion emission

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Abstract

In this article, graphene quantum dots (GQDs) with tunable surface chemistry (increasing oxidation degree) were prepared by an efficient two-step method. The GQDs have tunable fluorescence induced by the degree of surface oxidation, fine solubility, high stability and applicable up-conversion photoluminescence (PL). The PL mechanism was investigated based on the surface structure and PL behaviors. More importantly, the GQDs have acid–base response property and can be applied as pH sensors.

Graphical abstract: Graphene quantum dots with controllable surface oxidation, tunable fluorescence and up-conversion emission

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Publication details

The article was received on 01 Feb 2012, accepted on 02 Feb 2012 and first published on 02 Feb 2012


Article type: Communication
DOI: 10.1039/C2RA20182H
RSC Adv., 2012,2, 2717-2720

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    Graphene quantum dots with controllable surface oxidation, tunable fluorescence and up-conversion emission

    S. Zhu, J. Zhang, X. Liu, B. Li, X. Wang, S. Tang, Q. Meng, Y. Li, C. Shi, R. Hu and B. Yang, RSC Adv., 2012, 2, 2717
    DOI: 10.1039/C2RA20182H

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