Studying electron transfer through alkanethiol self-assembled monolayers on a hanging mercury drop electrode using potentiometric measurements

Meirav Cohen-Atiya, Daniel Mandler*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

A new approach based on measuring the change of the open-circuit potential (OCP) of a hanging mercury drop electrode (HMDE), modified with alkanethiols of different chain length conducted in a solution containing a mixture of Ru(NH3)62+ and Ru(NH3) 63+ is used for studying electron transfer across the monolayer. Following the time dependence of the OCP allowed the extraction of the kinetic parameters, such as the charge transfer resistance (Rct) and the electron transfer rate constant (ket), for different alkanethiol monolayers. An electron tunneling coefficient, β, of 0.9 Å-1 was calculated for the monolayers on Hg.

Original languageAmerican English
Pages (from-to)4405-4409
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume8
Issue number38
DOIs
StatePublished - 2006

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