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Infrared spectroscopic study of a γ-mercaptopropyltrimethoxysilane monolayer on a gold surface
Luleå tekniska universitet.
Luleå tekniska universitet.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
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1999 (English)In: Journal of Materials Chemistry, ISSN 0959-9428, E-ISSN 1364-5501, Vol. 9, no 7, p. 1507-1510Article in journal (Refereed) Published
Abstract [en]

Reflectance-absorption infrared spectra of ?-mercaptopropyltrimethoxysilane (?-MPT) adsorbed on Au (111)-oriented films are analyzed on the basis of the calculated vibrational modes of a monomer, a dimer and n-membered rings of SiO3R (R=CH2CH2CH2SAu). The results show that the ?-MPT molecules adsorbed on the Au surface are partially hydrolyzed and that the orientation of the methyl groups and propyl chains are near perpendicular to the surface. After a hydrolysis procedure, the SiO3 groups in ?-MPT form a quasi two-dimensional system built predominantly of 6-membered puckered Si-O rings. Additional treatment of the ?-MPT monolayer with a surface-charge-reversing cationic polymer disrupts the connectivity and increases the topological disorder in the silicate system.

Place, publisher, year, edition, pages
1999. Vol. 9, no 7, p. 1507-1510
National Category
Chemical Process Engineering Physical Chemistry
Research subject
Chemical Technology; Physical Chemistry
Identifiers
URN: urn:nbn:se:ltu:diva-4096Local ID: 1f7534a0-aae1-11db-aeba-000ea68e967bOAI: oai:DiVA.org:ltu-4096DiVA, id: diva2:976959
Note
Godkänd; 1999; 20070123 (bajo)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-04-05Bibliographically approved

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Hedlund, JonasHolmgren, AllanSterte, Johan

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