Document Detail

Electric field gradient focusing using a variable width polyaniline electrode.
MedLine Citation:
PMID:  23027042     Owner:  NLM     Status:  Publisher    
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.
Christopher A Trickett; Rowan D Henderson; Rosanne M Guijt; Michael C Breadmore
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-28
Journal Detail:
Title:  Electrophoresis     Volume:  -     ISSN:  1522-2683     ISO Abbreviation:  Electrophoresis     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-10-2     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8204476     Medline TA:  Electrophoresis     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Australian Centre for Research on Separation Science, School of Chemistry, University of Tasmania, Hobart, Tasmania, Australia.
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