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Title: Effect of bulk structure of some non-aqueous solvents on the barrier properties of alkanethiol monolayer
Authors: Sur, Ujjal Kumar
Lakshminarayanan, V.
Keywords: Alkanethio
Self assembled monolayer
Non-aqueous solvents
Impedance spectroscopy
Issue Date: Dec-2001
Publisher: Elsevier B.V.
Citation: Journal of Electroanalytical Chemistry, 2001, Vol.516, p31-38
Abstract: We have carried out cyclic voltammetric and electrochemical impedance spectroscopic studies to compare the barrier properties of monolayer on gold formed by two alkanethiols of different chain lengths in solvents like acetonitrile, propylene carbonate, ethanol and formamide. Our results show that the blocking behavior of the alkanethiol monolayer to ferrocene electron transfer reaction varies in the order formamide>ethanol>acetonitrilecongruent withpropylene carbonate. The electron transfer through the monolayer is facilitated by the ability of the solvent molecules to interact with the thiol molecules and disorganize the monolayer. We have correlated the internal order of the solvent molecules with their ability to influence the structural integrity and barrier properties of the monolayer.
Description: Restricted Access.
ISSN: 0022-0728
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Copyright: 2001 Elsevier B.V.
Appears in Collections:Research Papers (SCM)

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