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Electrosurface Phenomena at Polymer Films for Biosensor Applications
Author(s) -
Zimmermann Ralf,
Birkert Oliver,
Gauglitz Günter,
Werner Carsten
Publication year - 2003
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200200475
Subject(s) - ethylene glycol , zeta potential , polymer , electrokinetic phenomena , surface charge , aqueous solution , isoelectric point , biosensor , biotinylation , chemical engineering , electrolyte , chemistry , streptavidin , materials science , polymer chemistry , analytical chemistry (journal) , chromatography , nanotechnology , organic chemistry , electrode , biochemistry , nanoparticle , biotin , engineering , enzyme
Sensitive surfaces : Thin polymer films as applied for sensitive elements of biosensors have been characterized by the combined determination of zeta potential and surface conductivity. Zeta potential versus pH plots indicate the acid–base characteristics of the polymer layers (see graphic). Surface conductivities reveal the accessibility of the interfacial volumes for mobile electrolyte ions.