Ultrathin polymer films on gold surfaces through activation of Si-H bonds

Hirayama, Martina; Caseri, Walter; Suter, Ulrich

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Ultrathin polymer films on gold surfaces through activation of Si-H bonds
Authors:	Hirayama, Martina Caseri, Walter Suter, Ulrich
Published in:	Journal of Colloid and Interface Science
Volume(Issue):	216
Issue:	2
Page(s):	250
Issue Date:	1999
Publisher / Ed. Institution:	Elsevier
Publisher / Ed. Institution:	Amsterdam
ISSN:	0021-9797
Language:	English
Subjects:	Coating; Nanolayer; Polymer; Gold
Subject (DDC):	540: Chemistry
Abstract:	Several poly(siloxane)s and a poly(silazane) were bound to gold surfaces by activation of Si-H bonds with cis-[PtCl2(PhCH=CH2)2]. Under the reaction conditions used here, absorption of the poly(siloxane)s is observed exclusively in presence of the platinum compound. The resulting ultrathin layers were studied with IR spectroscopy at grazing incidence reflection, X-ray photoelectron spectroscopy (XPS), contact angle measurements and ellipsometry. The layer thicknesses (2.9-5.2 nm) are in the typical range of polymer monolayers adsorbed on gold. The wetting properties of the modified gold substrates correspond to those of the pure polymers, indicating that the gold is covered to a high extent or completely with polymer. The highest contact angles of water (115°) were observed with Si-H-terminated poly(dimethylsiloxane) and are among the highest reported for an ultrathin layer on gold. We assume that the activator cleaves Si-H bonds. The polymers might be bound to the surface by Au-Si bonds or via Pt-Si species.
URI:	https://digitalcollection.zhaw.ch/handle/11475/3023
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Appears in collections:	Publikationen School of Engineering

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Hirayama, M., Caseri, W., & Suter, U. (1999). Ultrathin polymer films on gold surfaces through activation of Si-H bonds. Journal of Colloid and Interface Science, 216(2), 250.

Hirayama, M., Caseri, W. and Suter, U. (1999) ‘Ultrathin polymer films on gold surfaces through activation of Si-H bonds’, Journal of Colloid and Interface Science, 216(2), p. 250.

M. Hirayama, W. Caseri, and U. Suter, “Ultrathin polymer films on gold surfaces through activation of Si-H bonds,” Journal of Colloid and Interface Science, vol. 216, no. 2, p. 250, 1999.

HIRAYAMA, Martina, Walter CASERI und Ulrich SUTER, 1999. Ultrathin polymer films on gold surfaces through activation of Si-H bonds. Journal of Colloid and Interface Science. 1999. Bd. 216, Nr. 2, S. 250

Hirayama, Martina, Walter Caseri, and Ulrich Suter. 1999. “Ultrathin Polymer Films on Gold Surfaces through Activation of Si-H Bonds.” Journal of Colloid and Interface Science 216 (2): 250.

Hirayama, Martina, et al. “Ultrathin Polymer Films on Gold Surfaces through Activation of Si-H Bonds.” Journal of Colloid and Interface Science, vol. 216, no. 2, 1999, p. 250.