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Stochastic detection and characterisation of individual ferrocene derivative tagged graphene nanoplatelets

Title
Stochastic detection and characterisation of individual ferrocene derivative tagged graphene nanoplatelets
Type
Article in International Scientific Journal
Year
2016
Authors
Wu, HY
(Author)
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Lin, QW
(Author)
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Batchelor McAuley, C
(Author)
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Goncalves, LM
(Author)
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Compton, RG
(Author)
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Journal
Title: The AnalystImported from Authenticus Search for Journal Publications
Vol. 141
Pages: 2696-2703
ISSN: 0003-2654
Indexing
Other information
Authenticus ID: P-00K-GPF
Abstract (EN): Graphene nanoplatelets (GNPs) are 'tagged' with 1-(biphen-4-yl)ferrocene. Chronoamperometry is then utilised to observe single particle impacts when GNPs suspended in solution collide with a carbon fibre micro wire electrode held at an oxidising potential, resulting in current/time transient "spikes". The impacts are associated with two types of charge transfer: Faradaic due to oxidation of the 'tag' and capacitative due to disruption of the double layer. Analysis of the spikes suggests approximate monolayer coverage of 1-(biphen-4-yl)ferrocene on the GNP surfaces, with a surface coverage of (2.2 +/- 0.3) x 10(-10) mol cm(-2). In contrast non-derivatised ferrocene does not exhibit any significant adsorption on the GNP material.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 8
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