| Electric field gradient focusing using a variable width polyaniline electrode. | |
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MedLine Citation:
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PMID: 23027042 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A new approach for electric field gradient focusing (EFGF) based on the use of a variable-width polyaniline (PANI) electrode is demonstrated. The electrode was created by patterning a PANI nanofibre film using a 635-nm laser and a computer-controlled XY stage. The electrode consisted of 16 segments of varying width, ranging from 200 to 5000 μm in 320 μm increments, with the resistance changing approximately 20-fold from 3881 to 198 kΩ at each extreme, respectively. Application of a voltage across the electrode established a voltage gradient resulting in a non-linear distribution of electrophoretic velocities along the microchannel. When balanced with a combination of hydrodynamic flow and EOF, the variable-width PANI electrode could be used for the concentration and separation of two cationic dyes, rhodamine 6G and quinine, which were concentrated by at least threefold within 10 min. |
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Authors:
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Christopher A Trickett; Rowan D Henderson; Rosanne M Guijt; Michael C Breadmore |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-8-28 |
Journal Detail:
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Title: Electrophoresis Volume: - ISSN: 1522-2683 ISO Abbreviation: Electrophoresis Publication Date: 2012 Aug |
Date Detail:
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Created Date: 2012-10-2 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8204476 Medline TA: Electrophoresis Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
Affiliation:
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Australian Centre for Research on Separation Science, School of Chemistry, University of Tasmania, Hobart, Tasmania, Australia. |
Export Citation:
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Descriptor/Qualifier:
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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