Analysis of Im-SH self-assembled monolayer formation and its interaction with Fe2+ and Zn2+ using quartz chemical analyzer

Citation
Jm. Kim et al., Analysis of Im-SH self-assembled monolayer formation and its interaction with Fe2+ and Zn2+ using quartz chemical analyzer, SENS ACTU-B, 76(1-3), 2001, pp. 74-79
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
0925-4005 → ACNP
Volume
76
Issue
1-3
Year of publication
2001
Pages
74 - 79
Database
ISI
SICI code
0925-4005(20010601)76:1-3<74:AOISMF>2.0.ZU;2-V
Abstract
A self-assembly process and dynamic property changes of N-[2-(4-imidazolyl) ethyl]11-mercaptoundecanamide (Im-SH) on gold electrode have been investiga ted measuring the resonant and electrochemical parameters of quartz crystal using a quartz chemical analyzer and an impedance analyzer. The morphologi cal changes on gold surface have also been investigated using an optical mi croscopy and a STM. The affinity differences of assembled film for Zn2+ and Fe2+ have also been investigated by the electrochemical experiments. As a result, a two-step process is found in the self-assembly by utilizing abund ant analytical variables from the impedance analyzer and a molecular level conformational change has been detected in the scanning tunneling microscop y (STM) images for the self-assembled monolayer (SAM) film and the metal io ns bonded film. The conformational change is well corresponding to the elec trochemical results. (C) 2001 Elsevier Science B.V. All rights reserved.