Document Detail


SAMs on gold derived from the direct adsorption of alkanethioacetates are inferior to those derived from the direct adsorption of alkanethiols.
MedLine Citation:
PMID:  19123812     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Self-assembled monolayers (SAMs) on gold derived from the direct adsorption of thioacetic acid S-decyl ester (C10SAc) and thioacetic acid S-octadecyl ester (C18SAc) were compared to the corresponding SAMs derived from the analogous adsorption n-decanethiol (C10SH) and n-octadecanethiol (C18SH). All SAMs were characterized using ellipsometry, contact angle goniometry, polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS), and X-ray photoelectron spectroscopy (XPS). The comparison revealed that the SAMs generated from the thioacetates are not as densely packed and well ordered as the SAMs generated from the thiols. Furthermore, studies of the kinetics of adsorption found that the thioacetates adsorb more slowly than the corresponding thiols.
Authors:
Mathilde I Béthencourt; La-ongnuan Srisombat; Pawilai Chinwangso; T Randall Lee
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Langmuir : the ACS journal of surfaces and colloids     Volume:  25     ISSN:  0743-7463     ISO Abbreviation:  Langmuir     Publication Date:  2009 Feb 
Date Detail:
Created Date:  2009-02-09     Completed Date:  2009-03-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882736     Medline TA:  Langmuir     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1265-71     Citation Subset:  IM    
Affiliation:
Department of Chemistry, University of Houston, 4800 Calhoun Rd, Houston, Texas 77204-5003, USA.
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MeSH Terms
Descriptor/Qualifier:
Acetates / chemistry*
Adsorption
Alkanes / chemistry*
Gold / chemistry*
Kinetics
Spectrum Analysis
Sulfhydryl Compounds / chemistry*
Chemical
Reg. No./Substance:
0/Acetates; 0/Alkanes; 0/Sulfhydryl Compounds; 7440-57-5/Gold

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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