SIMULTANEOUS ELECTROCHEMICAL DETECTION OF DOPAMINE, ASCORBIC ACID AND URIC ACID USING COPPER-PHTHALOCYANINE FUNCTIONALIZED MWCNTS

Multiwalled carbon nanotububes functionalized with amino groups (MWCNT-NH2) and further modified with copper-phthalocyaninetetrasulphonate (4ß(SO3) CuPc) were used for preparing a hybrid electrode [MWCNT-NH2/4ß(SO3)CuPc/GC] using glassy carbon (GC) as a support. This hybrid electrode was tested for...

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Autores principales:	SANCY,MAMIE, FRANCISCO SILVA,J, PAVEZ,JORGE, ZAGAL,JOSÉ H
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2013
Materias:	Dopamine ascorbic acid uric acid carbon nanotubes copper-tetrasulphonate phthalocyanine hybrids electrodes sensor modified electrodes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400048
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spelling	oai:scielo:S0717-970720130004000482014-09-02SIMULTANEOUS ELECTROCHEMICAL DETECTION OF DOPAMINE, ASCORBIC ACID AND URIC ACID USING COPPER-PHTHALOCYANINE FUNCTIONALIZED MWCNTSSANCY,MAMIEFRANCISCO SILVA,JPAVEZ,JORGEZAGAL,JOSÉ H Dopamine ascorbic acid uric acid carbon nanotubes copper-tetrasulphonate phthalocyanine hybrids electrodes sensor modified electrodes Multiwalled carbon nanotububes functionalized with amino groups (MWCNT-NH2) and further modified with copper-phthalocyaninetetrasulphonate (4ß(SO3) CuPc) were used for preparing a hybrid electrode [MWCNT-NH2/4ß(SO3)CuPc/GC] using glassy carbon (GC) as a support. This hybrid electrode was tested for the detection of dopamine (DA) in the presence of ascorbic acid (AA) and uric acid (UA) in a PBS buffer solution at pH 6.8. The presence of the macrocyclic increased the resolution of the oxidation signals of AA, DA and UA into three very well distinct oxidation peaks. This effect was enhanced when the complex is adsorbed on multiwalled carbon nanotubes. In addition, the hybrid films provide a simple method for selective detection of DA, AA and UA in biological samples. The calibration curves for DA were obtained over the range of 1x10-6-1x10-3M, obtaining a good selectivity and sensitivity.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400048en10.4067/S0717-97072013000400048
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Dopamine ascorbic acid uric acid carbon nanotubes copper-tetrasulphonate phthalocyanine hybrids electrodes sensor modified electrodes
spellingShingle	Dopamine ascorbic acid uric acid carbon nanotubes copper-tetrasulphonate phthalocyanine hybrids electrodes sensor modified electrodes SANCY,MAMIE FRANCISCO SILVA,J PAVEZ,JORGE ZAGAL,JOSÉ H SIMULTANEOUS ELECTROCHEMICAL DETECTION OF DOPAMINE, ASCORBIC ACID AND URIC ACID USING COPPER-PHTHALOCYANINE FUNCTIONALIZED MWCNTS
description	Multiwalled carbon nanotububes functionalized with amino groups (MWCNT-NH2) and further modified with copper-phthalocyaninetetrasulphonate (4ß(SO3) CuPc) were used for preparing a hybrid electrode [MWCNT-NH2/4ß(SO3)CuPc/GC] using glassy carbon (GC) as a support. This hybrid electrode was tested for the detection of dopamine (DA) in the presence of ascorbic acid (AA) and uric acid (UA) in a PBS buffer solution at pH 6.8. The presence of the macrocyclic increased the resolution of the oxidation signals of AA, DA and UA into three very well distinct oxidation peaks. This effect was enhanced when the complex is adsorbed on multiwalled carbon nanotubes. In addition, the hybrid films provide a simple method for selective detection of DA, AA and UA in biological samples. The calibration curves for DA were obtained over the range of 1x10-6-1x10-3M, obtaining a good selectivity and sensitivity.
author	SANCY,MAMIE FRANCISCO SILVA,J PAVEZ,JORGE ZAGAL,JOSÉ H
author_facet	SANCY,MAMIE FRANCISCO SILVA,J PAVEZ,JORGE ZAGAL,JOSÉ H
author_sort	SANCY,MAMIE
title	SIMULTANEOUS ELECTROCHEMICAL DETECTION OF DOPAMINE, ASCORBIC ACID AND URIC ACID USING COPPER-PHTHALOCYANINE FUNCTIONALIZED MWCNTS
title_short	SIMULTANEOUS ELECTROCHEMICAL DETECTION OF DOPAMINE, ASCORBIC ACID AND URIC ACID USING COPPER-PHTHALOCYANINE FUNCTIONALIZED MWCNTS
title_full	SIMULTANEOUS ELECTROCHEMICAL DETECTION OF DOPAMINE, ASCORBIC ACID AND URIC ACID USING COPPER-PHTHALOCYANINE FUNCTIONALIZED MWCNTS
title_fullStr	SIMULTANEOUS ELECTROCHEMICAL DETECTION OF DOPAMINE, ASCORBIC ACID AND URIC ACID USING COPPER-PHTHALOCYANINE FUNCTIONALIZED MWCNTS
title_full_unstemmed	SIMULTANEOUS ELECTROCHEMICAL DETECTION OF DOPAMINE, ASCORBIC ACID AND URIC ACID USING COPPER-PHTHALOCYANINE FUNCTIONALIZED MWCNTS
title_sort	simultaneous electrochemical detection of dopamine, ascorbic acid and uric acid using copper-phthalocyanine functionalized mwcnts
publisher	Sociedad Chilena de Química
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400048
work_keys_str_mv	AT sancymamie simultaneouselectrochemicaldetectionofdopamineascorbicacidanduricacidusingcopperphthalocyaninefunctionalizedmwcnts AT franciscosilvaj simultaneouselectrochemicaldetectionofdopamineascorbicacidanduricacidusingcopperphthalocyaninefunctionalizedmwcnts AT pavezjorge simultaneouselectrochemicaldetectionofdopamineascorbicacidanduricacidusingcopperphthalocyaninefunctionalizedmwcnts AT zagaljoseh simultaneouselectrochemicaldetectionofdopamineascorbicacidanduricacidusingcopperphthalocyaninefunctionalizedmwcnts
_version_	1718445504720797696

SIMULTANEOUS ELECTROCHEMICAL DETECTION OF DOPAMINE, ASCORBIC ACID AND URIC ACID USING COPPER-PHTHALOCYANINE FUNCTIONALIZED MWCNTS

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