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Electrochemistry of nanozeolite-immobilized cytochrome c in aqueous and nonaqueous solutions

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dc.contributor.author Guo, Kai
dc.contributor.author Hu, Yuanyuan
dc.contributor.author Zhang, Yahong
dc.contributor.author Liu, Baohong
dc.contributor.author Magner, Edmond
dc.date.accessioned 2014-10-30T14:32:14Z
dc.date.available 2014-10-30T14:32:14Z
dc.date.issued 2010
dc.identifier.uri http://hdl.handle.net/10344/4123
dc.description peer-reviewed en_US
dc.description.abstract The electrochemical properties of cytochrome c (cyt c) immobilized on multilayer nanozeolite-modified electrodes have been examined in aqueous and nonaqueous solutions. Layers of Linde type-L zeolites were assembled on indium tin oxide (ITO) glass electrodes followed by the adsorption of cyt c, primarily via electrostatic interactions, onto modified ITO electrodes. The heme protein displayed a quasi-reversible response in aqueous solution with a redox potential of +324 mV (vs NHE), and the surface coverage (Gamma*) increased linearly for the first four layers and then gave a nearly constant value of 200 pmol cm(-2). On immersion of the modified electrodes in 95% (v/v) nonaqueous solutions, the redox potential decreased significantly, a decrease that originated from changes in both the enthalpy and entropy of reduction. On reimmersion of the modified electrode in buffer, the faradic response immediately returned to its original value. These results demonstrate that nanozeolites are potential stable supports for redox proteins and enzymes. en_US
dc.language.iso eng en_US
dc.publisher American Chemical Society en_US
dc.relation.ispartofseries Langmuir;26 (11), pp. 9076-81
dc.relation.uri http://dx.doi.org/10.1021/la904630c
dc.rights This document is the unedited author's version of a submitted work that was subsequently accepted for publication in Langmuir, copyright © American Chemical Society after peer review. To access the final edited and published work, see http://dx.doi.org/10.1021/la904630c en_US
dc.subject heme-proteins en_US
dc.subject electron-transfer en_US
dc.subject redox properties en_US
dc.subject dielectric-constant en_US
dc.subject films en_US
dc.title Electrochemistry of nanozeolite-immobilized cytochrome c in aqueous and nonaqueous solutions en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.date.updated 2014-10-30T14:17:23Z
dc.description.version ACCEPTED
dc.contributor.sponsor SFI en_US
dc.contributor.sponsor INSPIRE en_US
dc.relation.projectid NSFC 20925517 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 1128062
dc.internal.copyrightchecked Yes
dc.description.status peer-reviewed


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