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Issue 7, 2012
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Graphenequantum 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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Supplementary files

Article information


Submitted
01 Feb 2012
Accepted
02 Feb 2012
First published
02 Feb 2012

RSC Adv., 2012,2, 2717-2720
Article type
Communication

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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