Influence of the Chain Length of Alkanethiols in Self‐Assembled Submonolayers on the Electrochemical Response of Aromatic Amine Mixtures |
| |
| Authors: | Idania Carrillo Ma Carmen Quintana Ana Margarita Esteva Lucas Hernández Pedro Hernández |
| |
| Institution: | 1. Departamento de Química Analítica, Facultad de Química, Universidad de la Habana, La Habana 10400, Cuba;2. Departamento de Química Analítica y Análisis Instrumental, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049, Madrid, Spain |
| |
| Abstract: | 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. |
| |
| Keywords: | Self‐assembled submonolayers Alkanethiols Chain length Aromatic amines Square‐wave voltammetry |
|
|
