Observation of three growth mecbanisms in self-assembled monolayers
Article Abstract:
The self-assembly of octadecyltrichlorosilane-based monolayers on the oxidized Si(100) surface was investigated using time-resolved atomic force microscopy and contact angle measurements. Experimental results showed that the self-assembly of the monolayers can be induced by three distinct mechanisms, namely, island growth at low temperatures, homogeneous growth at high temperatures and a mixed regime at intermediate temperatures. These findings are in good agreement with the notion of a transient Langmuir film at the substrate-solution interface.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Structure and mechanism of photooxidation of self-assembled monolayers of alkylthiols on silver studied by XPS and static SIMS
Article Abstract:
XPS and static secondary ion mass spectrometric analyses were performed to describe the photooxidation of self-assembled monolayers (SAMs) of alkylthiols adsorbed on evaporated silver surfaces. The findings demonstrate similarities in the data gathered for SAMs on silver and gold. XPS results suggest that the composition of the monolayers were independent of the sulfur content and exposure to the thiol solution. Moreover, S-C bond scission resulted in the formation of inorganic sulfur which when oxidized produced inorganic sulfur products.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Comparative investigations of the packing and ambient stability of self-assembled monolayers of alkanethiols on gold and silver by friction force microscopy
Article Abstract:
Friction force microscopy provides some novel insights into the structures of self-assembled monolayers (SAMs) on silver and is compared with the behavior observed for SAMs on gold. The variations in the packing density of the adsorbate molecules are the differences in the frictional behavior that were observed for monolayers on the two different substrates.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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