Issue 24, 2013

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

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

Supplementary files

Article information

Article type
Communication
Submitted
15 Jul 2013
Accepted
22 Sep 2013
First published
26 Sep 2013

Nanoscale, 2013,5, 12098-12103

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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