SURFACE ENHANCED RAMAN SPECTRUM OF NANOMETRIC MOLECULAR SYSTEMS

Surface-enhanced Raman spectroscopy (SERS) was demonstrated to be a useful and sensitive structural spectroscopic tool for the characterization of different types of supramolecular architectures, ideally suited for trace analysis. SERS spectra allowed to distinguish cell membrane components of the b...

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Autores principales:	LEYTO,P., LIZAMA-VERGARA,P.A., CAMPOS-VALLETTE,M.M., BECKER,M.I., CLAVIJO,E., CÓRDOVA REYES,I, VERA,M, JEREZ,C. A
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2005
Materias:	SERS Bacteria Carbonnanotube Blue copper proteins Humic acid
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072005000400014
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spelling	oai:scielo:S0717-970720050004000142006-04-19SURFACE ENHANCED RAMAN SPECTRUM OF NANOMETRIC MOLECULAR SYSTEMSLEYTO,P.LIZAMA-VERGARA,P.A.CAMPOS-VALLETTE,M.M.BECKER,M.I.CLAVIJO,E.CÓRDOVA REYES,IVERA,MJEREZ,C. A SERS Bacteria Carbonnanotube Blue copper proteins Humic acid Surface-enhanced Raman spectroscopy (SERS) was demonstrated to be a useful and sensitive structural spectroscopic tool for the characterization of different types of supramolecular architectures, ideally suited for trace analysis. SERS spectra allowed to distinguish cell membrane components of the biomining bacterium Acidithiobacillus ferrooxidans and their physical and chemical variations caused by different growth media. Several SERS spectral modifications were arguments to propose different structures for two isolated model blue cooper proteins, i.e., hemocyanins belonging to mollusc Concholepas concholepas (CCH) and Megathura crenulata (KLH). The complex structure of a humic acid was demonstrated to be highly sensitive to the pH of the medium; a globular conformation predominated at lower pH, while a decurled structure was observed at higher pH. Finally, the SERS technique using different excitation laser lines allowed to characterizing a carbon nanotube as a single-walled species, with metallic electronic characteristics; these species coexisted with different diametersinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.50 n.4 20052005-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072005000400014en10.4067/S0717-97072005000400014
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	SERS Bacteria Carbonnanotube Blue copper proteins Humic acid
spellingShingle	SERS Bacteria Carbonnanotube Blue copper proteins Humic acid LEYTO,P. LIZAMA-VERGARA,P.A. CAMPOS-VALLETTE,M.M. BECKER,M.I. CLAVIJO,E. CÓRDOVA REYES,I VERA,M JEREZ,C. A SURFACE ENHANCED RAMAN SPECTRUM OF NANOMETRIC MOLECULAR SYSTEMS
description	Surface-enhanced Raman spectroscopy (SERS) was demonstrated to be a useful and sensitive structural spectroscopic tool for the characterization of different types of supramolecular architectures, ideally suited for trace analysis. SERS spectra allowed to distinguish cell membrane components of the biomining bacterium Acidithiobacillus ferrooxidans and their physical and chemical variations caused by different growth media. Several SERS spectral modifications were arguments to propose different structures for two isolated model blue cooper proteins, i.e., hemocyanins belonging to mollusc Concholepas concholepas (CCH) and Megathura crenulata (KLH). The complex structure of a humic acid was demonstrated to be highly sensitive to the pH of the medium; a globular conformation predominated at lower pH, while a decurled structure was observed at higher pH. Finally, the SERS technique using different excitation laser lines allowed to characterizing a carbon nanotube as a single-walled species, with metallic electronic characteristics; these species coexisted with different diameters
author	LEYTO,P. LIZAMA-VERGARA,P.A. CAMPOS-VALLETTE,M.M. BECKER,M.I. CLAVIJO,E. CÓRDOVA REYES,I VERA,M JEREZ,C. A
author_facet	LEYTO,P. LIZAMA-VERGARA,P.A. CAMPOS-VALLETTE,M.M. BECKER,M.I. CLAVIJO,E. CÓRDOVA REYES,I VERA,M JEREZ,C. A
author_sort	LEYTO,P.
title	SURFACE ENHANCED RAMAN SPECTRUM OF NANOMETRIC MOLECULAR SYSTEMS
title_short	SURFACE ENHANCED RAMAN SPECTRUM OF NANOMETRIC MOLECULAR SYSTEMS
title_full	SURFACE ENHANCED RAMAN SPECTRUM OF NANOMETRIC MOLECULAR SYSTEMS
title_fullStr	SURFACE ENHANCED RAMAN SPECTRUM OF NANOMETRIC MOLECULAR SYSTEMS
title_full_unstemmed	SURFACE ENHANCED RAMAN SPECTRUM OF NANOMETRIC MOLECULAR SYSTEMS
title_sort	surface enhanced raman spectrum of nanometric molecular systems
publisher	Sociedad Chilena de Química
publishDate	2005
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072005000400014
work_keys_str_mv	AT leytop surfaceenhancedramanspectrumofnanometricmolecularsystems AT lizamavergarapa surfaceenhancedramanspectrumofnanometricmolecularsystems AT camposvallettemm surfaceenhancedramanspectrumofnanometricmolecularsystems AT beckermi surfaceenhancedramanspectrumofnanometricmolecularsystems AT clavijoe surfaceenhancedramanspectrumofnanometricmolecularsystems AT cordovareyesi surfaceenhancedramanspectrumofnanometricmolecularsystems AT veram surfaceenhancedramanspectrumofnanometricmolecularsystems AT jerezca surfaceenhancedramanspectrumofnanometricmolecularsystems
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SURFACE ENHANCED RAMAN SPECTRUM OF NANOMETRIC MOLECULAR SYSTEMS

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