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Growth and Electrochemical Activity of the poly-L-lysine/poly-L-glutamic Acid thin Layer Films: An EQCM and Electrochemical Study
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SYSNO ASEP 0101033 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Growth and Electrochemical Activity of the poly-L-lysine/poly-L-glutamic Acid thin Layer Films: An EQCM and Electrochemical Study Title Růst a elektrochemické chování tenkovrstvých filmů z poly-L-lysinu a kyseliny poly-L-glutamové: EQCM a elektrochemické studium Author(s) Hoffmannová, Hana (UFCH-W) RID
Fermín, D. (CH)
Krtil, Petr (UFCH-W) RID, ORCIDSource Title Journal of the Electroanalytical Chemistry and Journal of Electroanalytical Chemistry and Interfacial Electrochemistry. - : Elsevier - ISSN 0022-0728
Roč. 562, č. 2 (2004), s. 261-265Number of pages 5 s. Language eng - English Country CH - Switzerland Keywords ITIES ; electron transfer ; QCM Subject RIV CG - Electrochemistry R&D Projects KJB4040305 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z4040901 - UFCH-W Annotation Quartz crystal microbalance (QCM) measurement and cyclic voltammetry were used to study the layer-by-layer growth of poly-L-lysine (p-Lys) and poly-L-glutamic acid (p-Glu) thin films and their ability to act as support for redox relays between metal electrodes and redox species in organic electrolytes. The mass of the film grown from buffered solution at constant pH depends on the composition of the buffer used. The growth proceeds in several stages with different mass increments for each poly-L-lysine and poly-L-glutamic acid layer. Ferro/ferricyanide confined into the polypeptide films can play the role of a redox relay between the electrode surface and the organic electrolyte. This was demonstrated on the impregnated polypeptide film/1,2-dichloroethane interface with decamethylferrocene dissolved as redox species in the organic phase. The transport of the ferro/ferricyanide in the polypeptide film is the rate limiting step of the electron transfer process. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2005
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