VOLTAMMETRIC MEASUREMENT OF INTERFACIAL ACID BASE REACTIONS/

Authors
WHITE HS PETERSON JD CUI QZ STEVENSON KJ
Citation
Hs. White et al., VOLTAMMETRIC MEASUREMENT OF INTERFACIAL ACID BASE REACTIONS/, JOURNAL OF PHYSICAL CHEMISTRY B, 102(16), 1998, pp. 2930-2934
Citations number
27
Categorie Soggetti
Chemistry Physical
Journal title
JOURNAL OF PHYSICAL CHEMISTRY B
ISSN journal
15206106 → ACNP
Volume
102
Issue
16
Year of publication
1998
Pages
2930 - 2934
Database
ISI
SICI code
1089-5647(1998)102:16<2930:VMOIAB>2.0.ZU;2-3
Abstract
The voltammetric response of a Ag(111) electrode coated with a mixed m olecular film of 11-mercaptoundecanoic acid and 1-decanethiol is prese nted. The voltammetric current arises from the reversible, electric fi eld-driven deprotonation of carboxylic acid groups. Voltammetric peak heights for interfacial protonation and deprotonation are a function o f solution pH, obtaining maximum values near the pK(1/2) (similar to 8 .5) of the molecular film.