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Issue 24, 2013
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Nearly monodisperse graphene quantum dots fabricated by amine-assisted cutting and ultrafiltration

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Abstract

We report a novel procedure involving polyethylenimine-assisted hydrothermal cutting and subsequent ultrafiltration for fabricating nearly monodisperse graphene quantum dots with a uniform lateral size and confined layer number. The isolated monolayer quantum dots exhibit a sharp band-edge absorption feature and strong photoluminescence (quantum yield of 21%) independent of excitation wavelength and pH. Their preliminary application in bioimaging has been demonstrated.

Graphical abstract: Nearly monodisperse graphene quantum dots fabricated by amine-assisted cutting and ultrafiltration

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Publication details

The article was received on 15 Jul 2013, accepted on 22 Sep 2013 and first published on 26 Sep 2013


Article type: Communication
DOI: 10.1039/C3NR03623E
Nanoscale, 2013,5, 12098-12103

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    Nearly monodisperse graphene quantum dots fabricated by amine-assisted cutting and ultrafiltration

    Q. Xue, H. Huang, L. Wang, Z. Chen, M. Wu, Z. Li and D. Pan, Nanoscale, 2013, 5, 12098
    DOI: 10.1039/C3NR03623E

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