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Adsorption of Bovine Serum Albumin on Silver Nanoparticle Layer Deposited on Mercaptohexylpyridinium-Coated Quartz Crystal Microbalance with Dissipation Gold Electrode: Studied by Electrochemical Quartz Crystal Microbalance with Dissipation
Malmö University, Biofilms Research Center for Biointerfaces. Malmö University, Faculty of Health and Society (HS), Department of Biomedical Science (BMV).
Malmö University, Biofilms Research Center for Biointerfaces. Malmö University, Faculty of Health and Society (HS), Department of Biomedical Science (BMV).
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2020 (English)In: Physica Status Solidi (a) applications and materials science, ISSN 1862-6300, E-ISSN 1862-6319, Vol. 217, no 13, article id 1900839Article in journal (Refereed) Published
Abstract [en]

Increasing use of silver nanoparticles (AgNPs) in different consumer products provokes interest in understanding interactions of AgNPs with biological molecules, e.g., proteins. The adsorption of AgNPs and bovine serum albumin (BSA) onto self-assembled monolayer of mercaptohexylpyridinium (MHP) on gold surface is described. A quartz crystal microbalance coupled with electrochemical measurements are used to study interactions between AgNPs and BSA. It is found that AgNPs adsorbed on MHP can be considered as highly elastic (stiff) film as the dissipation Delta D approximate to 0. Measurements of the mass loss and the increase in dissipation in parallel with the electrochemical oxidation/reduction of AgNPs shows that albumin adsorption on AgNPs highly diminish electrochemical Ag/AgCl conversion. The formation of a less rigid Ag layer than the original MHP-AgNPs film is also indicated. The 3D assemblies of nanostructures observed with scanning electron microscopy (SEM) reveal clustering of particles after the redox process.

Place, publisher, year, edition, pages
John Wiley & Sons, 2020. Vol. 217, no 13, article id 1900839
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Analytical Chemistry
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URN: urn:nbn:se:mau:diva-13812DOI: 10.1002/pssa.201900839ISI: 000510693400001Scopus ID: 2-s2.0-85088057554OAI: oai:DiVA.org:mau-13812DiVA, id: diva2:1415235
Available from: 2020-03-17 Created: 2020-03-17 Last updated: 2024-02-05Bibliographically approved

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Arnebrant, ThomasRuzgas, Tautgirdas

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Biofilms Research Center for BiointerfacesDepartment of Biomedical Science (BMV)
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Analytical Chemistry

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