Organic monolayers by B(C6F5)3-catalyzed siloxanation of oxidized silicon surfaces
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Organic monolayers by B(C6F5)3-catalyzed siloxanation of oxidized silicon surfaces

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Organic monolayers by B(C6F5)3-catalyzed siloxanation of oxidized silicon surfaces

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dc.contributor.author Escorihuela Fuentes, Jorge
dc.contributor.author Pujari, Sidharam P.
dc.contributor.author Zuilhof, Han
dc.date.accessioned 2018-09-05T14:12:23Z
dc.date.available 2018-09-05T14:12:23Z
dc.date.issued 2017
dc.identifier.uri http://hdl.handle.net/10550/67412
dc.description.abstract Inspired by the homogeneous catalyst tris(pentafluorophenyl) borane [B(C6F5)3], which acts as a promotor of Si-H bond activation, we developed and studied a method of modifying silicon oxide surfaces using hydrosilanes with B(C6F5)3 as the catalyst. This dedihydrosiloxanation reaction yields complete surface coverage within 10 min at room temperature. Organic monolayers derived from hydrosilanes with varying carbon chain lengths (C8-C18) were prepared on oxidized Si(111) surfaces, and the thermal and hydrolytic stabilities of the obtained monolayers were investigated in acidic (pH 3) medium, basic (pH 11) medium, phosphate-buffered saline (PBS), and deionized water (neutral conditions) for up to 30 days. DFT calculations were carried out to gain insight into the mechanism, and the computational results support a mechanism involving silane activation with B(C6F5)3. This catalyzed reaction path proceeds through a low-barrier-height transition state compared to the noncatalyzed reaction path.
dc.language.iso eng
dc.relation.ispartof Langmuir, 2017, vol. 33, num. 9, p. 2185-2193
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Escorihuela Fuentes, Jorge Pujari, Sidharam P. Zuilhof, Han 2017 Organic monolayers by B(C6F5)3-catalyzed siloxanation of oxidized silicon surfaces Langmuir 33 9 2185 2193
dc.subject Química orgànica
dc.subject Química de superfícies
dc.subject Silici Compostos
dc.title Organic monolayers by B(C6F5)3-catalyzed siloxanation of oxidized silicon surfaces
dc.type info:eu-repo/semantics/article
dc.date.updated 2018-09-05T14:12:23Z
dc.identifier.doi https://doi.org/10.1021/acs.langmuir.7b00110
dc.identifier.idgrec 126741

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