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Identifying the fluorescence of graphene oxide
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Thomas, Helen R., Vallés, Cristina, Young, Robert J. (Robert Joseph), Kinloch, Ian A., Wilson, Neil R. and Rourke, Jonathan (2013) Identifying the fluorescence of graphene oxide. Journal of Materials Chemistry C, Volume 1 (Number 2). pp. 338-342. doi:10.1039/c2tc00234e ISSN 2050-7526.
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Official URL: http://dx.doi.org/10.1039/c2tc00234e
Abstract
Treatment of graphene oxide (GO) with sodium hydroxide separates the material into two components: a colourless, but highly fluorescent, oxidative debris and a darker non-fluorescent material containing the graphene-like sheets. The as-produced GO shows a weak, broad photo-luminescence while the oxidative debris fluoresces more intensely, blue-shifted relative to the as-produced GO, with a dispersive emission profile shifting to lower wavelength as the excitation wavelength is decreased. Such excitation wavelength dependent photoluminescence is characteristic of ensembles of nanometre-sized carbon based fluorophores. By contrast, analysis of the fluorescence as a function of excitation wavelength for as-produced graphene oxide shows a single non-dispersive peak, consistent with broadening of the emission from a single species rather than an ensemble of quantum dots within the graphene sheet.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Science > Physics |
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Journal or Publication Title: | Journal of Materials Chemistry C | ||||
Publisher: | Royal Society of Chemistry | ||||
ISSN: | 2050-7526 | ||||
Official Date: | 25 October 2013 | ||||
Dates: |
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Volume: | Volume 1 | ||||
Number: | Number 2 | ||||
Page Range: | pp. 338-342 | ||||
DOI: | 10.1039/c2tc00234e | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access |
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