Voltammetric measurement of interfacial acid/base reactions

Henry S. White, Jeffery D. Peterson, Qizhi Cui, Keith J. Stevenson

Research output: Contribution to journalArticlepeer-review

107 Citations (Scopus)

Abstract

The voltammetric response of a Ag(111) electrode coated with a mixed molecular film of 11-mercaptoundecanoic acid and 1-decanethiol is presented. The voltammetric current arises from the reversible, electric field-driven deprotonation of carboxylic acid groups. Voltammetric peak heights for interfacial protonation and deprotonation are a function of solution pH, obtaining maximum values near the pK1/2 (∼8.5) of the molecular film.

Original languageEnglish
Pages (from-to)2930-2934
Number of pages5
JournalJournal of Physical Chemistry B
Volume102
Issue number16
DOIs
Publication statusPublished - 16 Apr 1998
Externally publishedYes

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