| Facile synthesis of graphene hybrid tube-like structure for simultaneous detection of ascorbic acid, dopamine, uric acid and tryptophan. | |
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MedLine Citation:
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PMID: 23176734 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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In the present work, a tube-like structure of graphene hybrid as modifier to fabricate electrode for simultaneous detection of ascorbic acid (AA), dopamine (DA), uric acid (UA) and tryptophan (Trp) was reported. The hybrid was synthesized by a simple method based on graphene sheets (GS) and 3,4,9,10-perylenetetracarboxylic acid (PTCA) via π-π stacking interaction under ultrasonic condition. The combination of GS and PTCA could effectively improve the dispersion of GS, owing to PTCA with the carboxylic-functionalized interface. Comparing with pure GS or PTCA modified electrode, GS-PTCA displayed high catalytic activity and selectivity toward the oxidation of AA, DA, UA, and Trp. Moreover, cyclic voltammetry, different pulse voltammetry and scanning electron microscopy were employed to characterize the sensors. The experiment results showed that the linear response range for simultaneous detection of AA, DA, UA, and Trp were 20-420μM, 0.40-374μM, 4-544μM and 0.40-138μM, respectively, and the detection limits were 5.60μM, 0.13μM, 0.92μM and 0.06μM (S/N=3). Importantly, the proposed method offers promise for simple, rapid, selective and cost-effective analysis of small biomolecules. |
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Authors:
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Wen Zhang; Yaqin Chai; Ruo Yuan; Shihong Chen; Jing Han; Dehua Yuan |
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Publication Detail:
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Type: Journal Article Date: 2012-11-01 |
Journal Detail:
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Title: Analytica chimica acta Volume: 756 ISSN: 1873-4324 ISO Abbreviation: Anal. Chim. Acta Publication Date: 2012 Dec |
Date Detail:
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Created Date: 2012-11-26 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370534 Medline TA: Anal Chim Acta Country: Netherlands |
Other Details:
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Languages: eng Pagination: 7-12 Citation Subset: IM |
Copyright Information:
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Copyright © 2012 Elsevier B.V. All rights reserved. |
Affiliation:
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Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, PR China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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