Sodium dodecyl sulfate adsorbed monolayers on gold electrodes

Soares‚ D.M.; Gomes‚ W.E.; Tenan‚ M.A.

Advanced search

Search - Use quotation marks to get a more specific result

Index

Field of knowledge

Start date

Betweenand

(Reference retrieved automatically from Google Scholar through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Sodium dodecyl sulfate adsorbed monolayers on gold electrodes

Full text
Author(s):	Soares‚ D.M. ; Gomes‚ W.E. ; Tenan‚ M.A. Total Authors: 3
Document type:	Journal article
Source:	Langmuir; v. 23, n. 8, p. 4383-4388, 2007.
Abstract
Self-assembled aggregates of amphiphilic surfactant molecules formed on solid surfaces are similar to biological membranes. To understand the formation mechanism of these aggregates, we have studied the formation of self-organized monolayers from low-concentration sodium dodecyl sulfate (SDS) aqueous solutions (concentration below the critical micelle concentration) on gold surfaces. The study has been carried out by using simultaneously quartz crystal microbalance (QCM) and open circuit potential measurements in situ. We have developed a model which explains the variation of the QCM frequency and open circuit potential following SDS additions to water. The dominant growth mechanism during the major part of film formation was demonstrated to be surface diffusion of surfactant molecules. (AU)

FAPESP's process:	03/12529-4 - Nanotechnology: manufacture of nanostructures and supramolecular structures in liquid medium: observation of structures formed and investigation of processes of formation of nanostructures
Grantee:	Omar Teschke
Support Opportunities:	Research Projects - Thematic Grants

Short URL