| Surface-deposited acid/base on glass microfibers in formation of (3-aminopropyl)triethoxysilane-[2-(3,4-epoxycyclohexyl)ethyl]heptaisobutyloctasilsesquioxane bioverlay. | |
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MedLine Citation:
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PMID: 16584237 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Silanization of macroporous glass microfiber filters with (3-aminopropyl)triethoxysilane (APTES) and subsequent binding of [2-(3,4-epoxycyclohexyl)ethyl]heptaisobutyloctasilsesquioxane (E-POSS) to the amine-terminated surface of microfibers was studied. Prior to the silanization, minute quantities of concentrated aqueous solutions of hydrochloric acid or ammonia were adsorbed in the filters while attachment of E-POSS molecules to APTES overlay was not specially catalyzed. Analysis of DRIFT, XPS, and 13C CP/MAS NMR spectra has shown that the formation of APTES overlay is affected differently by the surface-deposited acid or base. It was proved by XPS that microfibers with the adsorbed acid take up higher amounts of covalently attached APTES by 42% and, subsequently, of E-POSS by 65% than microfibers with the adsorbed ammonia. The molecular mechanics model calculations, which were made using silica as a template, have shown that approximately two-layered APTES coating can be built on the model surface if complete hydrolysis of ethoxy groups and vertical condensation of APTES species are assumed. |
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Authors:
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Galina A Tishchenko; Jirí Brus; Jirí Dybal; Michal Pekárek; Zdenka Sedláková; Miroslav Bleha; Zdenek Bastl |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Langmuir : the ACS journal of surfaces and colloids Volume: 22 ISSN: 0743-7463 ISO Abbreviation: Langmuir Publication Date: 2006 Apr |
Date Detail:
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Created Date: 2006-04-04 Completed Date: 2007-07-09 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882736 Medline TA: Langmuir Country: United States |
Other Details:
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Languages: eng Pagination: 3633-9 Citation Subset: IM |
Affiliation:
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Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic. tiscenko@imc.cas.cz |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Chemistry, Physical
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methods Fourier Analysis Glass / chemistry* Magnetic Resonance Spectroscopy Microscopy, Electron, Scanning Models, Chemical Molecular Conformation Molecular Structure Organosilicon Compounds / chemistry* Silanes / chemistry* Software Spectrometry, X-Ray Emission / methods Spectrophotometry / methods Surface Properties |
| Chemical | |
Reg. No./Substance:
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0/(2-(3,4-epoxycyclohexyl)ethyl)heptaisobutyloctasilsesquioxane; 0/Organosilicon Compounds; 0/Silanes; 0/amino-propyl-triethoxysilane |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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