Premium
Influence of the Chain Length of Alkanethiols in Self‐Assembled Submonolayers on the Electrochemical Response of Aromatic Amine Mixtures
Author(s) -
Carrillo Idania,
Quintana Ma Carmen,
Esteva Ana Margarita,
Hernández Lucas,
Hernández Pedro
Publication year - 2008
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200804365
Subject(s) - aniline , ethanethiol , amine gas treating , monolayer , electrochemistry , electrode , chemistry , selectivity , aromatic amine , self assembled monolayer , organic chemistry , catalysis , biochemistry
Alkanethiols, such as di‐ n ‐octadecyldisulfide, octanethiol, and ethanethiol, have been employed for self‐assembled monolayers on a gold electrode to study the influence of their chain length on the electrochemical response of aniline and 4‐aminobiphenyl. The responses of individual solutions and mixtures of both compounds show that the organization of the submonolayer built can improve the selectivity in the electrochemical analysis of those aromatic amines. The use of C8 10 −2 M allows the analysis of 4‐aminobiphenyl avoiding the aniline response. A better resolution for the analysis of those amine mixtures was obtained if a C18 10 −6 M modified gold electrode was used instead of an unmodified one.