Self‐assembled monolayers on silicon oxide

Autor:	Christian Belgardt, Christian von Borczyskowski, Thomas Baumgärtel, Harald Graaf
Rok vydání:	2010
Předmět:	chemistry.chemical_classification Silicon chemistry.chemical_element Nanotechnology Self-assembled monolayer Condensed Matter Physics Surface energy Contact angle chemistry Chemical engineering Yield (chemistry) Monolayer Silicon oxide Alkyl
Zdroj:	physica status solidi c. 7:227-231
ISSN:	1610-1642 1862-6351
DOI:	10.1002/pssc.200982471
Popis:	We evaluated the wet-chemical formation of octa-decyltrichlorosilane (OTS) self-assembled monolayers on silicon substrates with a silicon oxide layer. Our investigations were focussed on the influence of the reaction time on the surface energy. The surface energy was thereby calculated by measuring the static contact angle of two probe liquids on the surface. We found that only high reaction times of several hundred minutes yield a high quality monolayer with a minimal surface energy. A clear increase of the dispersive part of the surface energy for short reaction times is found. This can be explained by a high ratio of gauche-conformation within the alkyl chains accompanied by a rather slow rearrangement of the chains inside the monolayer to form a densely packed all-trans conformation. (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Databáze:	OpenAIRE
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