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

Adsorption of Sodium Dodecyl Sulfate on Ge Substrate: The Effect of a Low-Polarity Solvent

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Author(s):
Viana, Rommel B. [1] ; da Silva, Alberico B. F. [1] ; Pimentel, Andre S. [2]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Inst Chem Sao Carlos, Dept Chem & Mol Phys, BR-13560970 Sao Carlos, SP - Brazil
[2] Pontifical Catholic Univ Rio de Janeiro, Dept Chem, BR-22453900 Rio De Janeiro, RJ - Brazil
Total Affiliations: 2
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES; v. 13, n. 7, p. 7980-7993, JUL 2012.
Web of Science Citations: 17
Abstract

This paper describes the adsorption of sodium dodecyl sulfate (SDS) molecules in a low polar solvent on Ge substrate by using Fourier transform infrared-attenuated total reflection (FTIR-ATR) spectroscopy and atomic force microscopy (AFM). The maximum SDS amount adsorbed is (5.0 +/- 0.3) x 10(14) molecules cm(-2) in CHCl3, while with the use of CCl4 as subphase the ability of SDS adsorbed is 48% lower. AFM images show that depositions are highly disordered over the interface, and it was possible to establish that the size of the SDS deposition is around 30-40 nm over the Ge surface. A complete description of the infrared spectroscopic bands for the head and tail groups in the SDS molecule is also provided. (AU)