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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.citation	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.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.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	journal article	es_ES
dc.date.updated	2018-09-05T14:12:23Z
dc.identifier.doi	10.1021/acs.langmuir.7b00110
dc.identifier.idgrec	126741
dc.rights.accessRights	open access	es_ES