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Heterogeneity in th...
Heterogeneity in the fluorescence of graphene and graphene oxide quantum dots
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- Bradley, Siobhan J. (author)
- Victoria University of Wellington, New Zealand
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- Kroon, Renee, 1982 (author)
- Chalmers University of Technology, Sweden,Chalmers tekniska högskola
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- Laufersky, Geoffry (author)
- Victoria University of Wellington, New Zealand
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- Röding, Magnus (author)
- RISE,Jordbruk och livsmedel,Chalmers tekniska högskola,Chalmers University of Technology
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- Goreham, Renee V. (author)
- Victoria University of Wellington, New Zealand
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- Gschneidtner, Tina, 1985 (author)
- Chalmers University of Technology, Sweden,Chalmers tekniska högskola
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- Schroeder, Kathryn (author)
- Victoria University of Wellington, New Zealand
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- Moth-Poulsen, Kasper, 1978 (author)
- Chalmers University of Technology, Sweden,Chalmers tekniska högskola
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- Andersson, Mats, 1966 (author)
- Chalmers University of Technology, Sweden ; University of South Australia, Australia,Chalmers tekniska högskola
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- Nann, Thomas (author)
- Victoria University of Wellington, New Zealand
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(creator_code:org_t)
- 2017-01-12
- 2017
- English.
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In: Microchimica Acta. - : Springer Science and Business Media LLC. - 0026-3672 .- 1436-5073. ; 184:3, s. 871-878
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- Heterogeneity is an inherent property of a wealth of real-world nanomaterials and yet rarely in the reporting of new properties is its effect sufficiently addressed. Graphene quantum dots (GQDs) – fluorescent, nanoscale fragments of graphene - are an extreme example of a heterogeneous nanomaterial. Here, top-down approaches – by far the most predominant – produce batches of particles with a distribution of sizes, shapes, extent of oxidation, chemical impurities and more. This makes characterization of these materials using bulk techniques particularly complex and comparisons of properties across different synthetic methods uninformative. In particular, it hinders the understanding of the structural origin of their fluorescence properties. We present a simple synthetic method, which produces graphene quantum dots with very low oxygen content that can be suspended in organic solvents, suggesting a very pristine material. We use this material to illustrate the limitations of interpreting complex data sets generated by heterogeneous materials and we highlight how misleading this “pristine” interpretation is by comparison with graphene oxide quantum dots synthesized using an established protocol. In addition, we report on the solvatochromic properties of these particles, discuss common characterization techniques and their limitations in attributing properties to heterogeneous materials.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Keyword
- Characterization
- Fluorescence lifetime
- Graphene quantum dots
- NMR
- Photoluminescence
- Quantum yield
- Raman spectroscopy
- TEM
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Bradley, Siobhan ...
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Kroon, Renee, 19 ...
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Laufersky, Geoff ...
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Röding, Magnus
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Goreham, Renee V ...
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Gschneidtner, Ti ...
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Schroeder, Kathr ...
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Moth-Poulsen, Ka ...
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Andersson, Mats, ...
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Nann, Thomas
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Polymer Chemistr ...
- Articles in the publication
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Microchimica Act ...
- By the university
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RISE
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Chalmers University of Technology