Concepedia

Voltammetric Measurement of Interfacial Acid/Base Reactions

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

The Journal of Physical Chemistry B · 1998 · 113 citations · 24 references

DOI

Concepts

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 p K 1/2 (∼8.5) of the molecular film.

References

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