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Reference type: Journal
Authors: Cohen SR, Naaman R, Sagiv J
Article Title: Thermally induced disorder in organized organic monolayers on solid substrates.
Publication date: 1986
Journal: Journal of Physical Chemistry
Volume: 90
Issue: (14)
Page numbers: 3054-3056.
DOI: 10.1021/j100405a004

Abstract: Observation of melting in solid-supported organic monolayers of long-chain amphiphiles using FTIR spectroscopy and wettability measurements is reported. Three different substrate-monolayer interactions-covalent, ionic, and physical bonds-were investigated. Both Langmuir-Blodgett and self-assembly techniques were used. With the exception of covalently bound octadecyltrichlorosilane, all species underwent a large, irreversible randomization at around 110C. Although heating affected slight disorientation of the chains in QTS, no sharp phase transition characteristic of a melting process could be detected for temperatures up to 140C. The importance of head group immobilization in the thermal stabilization of monolayer structures is demonstrated.

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