Self-assembly of alkanoic acids on gold surfaces modified by underpotential deposition

Citation
Sy. Lin et al., Self-assembly of alkanoic acids on gold surfaces modified by underpotential deposition, J PHYS CH B, 105(21), 2001, pp. 4951-4955
Citations number
38
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
JOURNAL OF PHYSICAL CHEMISTRY B
ISSN journal
1520-6106 → ACNP
Volume
105
Issue
21
Year of publication
2001
Pages
4951 - 4955
Database
ISI
SICI code
1520-6106(20010531)105:21<4951:SOAAOG>2.0.ZU;2-W
Abstract
We present an alternative to self-assembled monolayers (SAMs) of omega -fun ctionalized alkanethiols on gold. Substrates utilized here are gold modifie d by electrochemical deposition of silver or copper monolayers. The metal a dlayers promote anchoring of carboxylate headgroups and assembly of omega - alkanoic acids, which would otherwise exhibit no chemisorption on bare gold . Infrared reflectance absorption spectroscopy shows that the films exhibit general characteristics of SAMs. The binding scheme is different from SAMs of alkanethiols on gold and alkanoic acids on silver or copper surfaces. W etability results obtained from contact angle measurements indicate that su ch films are more reproducible than SAMs of alkanoic acids on bulk silver a nd copper.