Document Detail


Adsorbed States of phosphonate derivatives of N-heterocyclic aromatic compounds, imidazole, thiazole, and pyridine on colloidal silver: comparison with a silver electrode.
MedLine Citation:
PMID:  19670840     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Here, we report a systematic surface-enhanced Raman spectroscopy (SERS) study of the structures of phosphonate derivatives of the N-heterocyclic aromatic compounds imidazole (ImMeP ([hydroxy(1H-imidazol-5-yl)methyl]phosphonic acid) and (ImMe)(2)P (bis[hydroxy-(1H-imidazol-4-yl)-methyl]phosphinic acid)), thiazole (BAThMeP (butylaminothiazol-2-yl-methyl)phosphonic acid) and BzAThMeP (benzylaminothiazol-2-yl-methyl)phosphonic acid)), and pyridine ((PyMe)(2)P (bis[(hydroxypyridin-3-yl-methyl)]phosphinic acid)) adsorbed on nanometer-sized colloidal particles. We compared these structures to those on a roughened silver electrode surface to determine the relationship between the adsorption strength and the geometry. For example, we showed that all of these biomolecules interact with the colloidal surface through aromatic rings. However, for BzAThMeP, a preferential interaction between the benzene ring and the colloidal silver surface is observed more so than that between the thiazole ring and this substrate. The PC(OH)C fragment does not take part in the adsorption process, and the phosphonate moiety of ImMeP and (ImMe)(2)P, being removed from the surface, only assists in this process.
Authors:
Edyta Podstawka; Tomasz K Olszewski; Bogdan Boduszek; Leonard M Proniewicz
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The journal of physical chemistry. B     Volume:  113     ISSN:  1520-6106     ISO Abbreviation:  -     Publication Date:  2009 Sep 
Date Detail:
Created Date:  2009-08-27     Completed Date:  2009-10-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101157530     Medline TA:  J Phys Chem B     Country:  United States    
Other Details:
Languages:  eng     Pagination:  12013-8     Citation Subset:  IM    
Affiliation:
Regional Laboratory of Physicochemical Analysis and Structural Research, Faculty of Chemistry, Jagiellonian University, 30-060 Krakow, Poland. podstawk@chemia.uj.edu.pl
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MeSH Terms
Descriptor/Qualifier:
Adsorption
Chemistry / methods
Colloids / chemistry*
Electrodes
Hydrocarbons, Aromatic / chemistry*
Imidazoles / chemistry*
Metal Nanoparticles / chemistry
Models, Chemical
Phosphonic Acids / chemistry*
Pyridines / chemistry*
Silver / chemistry*
Spectrophotometry / methods*
Surface Properties
Thiazoles / chemistry*
Chemical
Reg. No./Substance:
0/Colloids; 0/Hydrocarbons, Aromatic; 0/Imidazoles; 0/Phosphonic Acids; 0/Pyridines; 0/Thiazoles; 110-86-1/pyridine; 7440-22-4/Silver

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


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