ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION

ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION

In this work, it proposed the developing of a new material, a modified electrode with metallic phthalocyanines stacking columns, MxPc (Mx = Co, Fe and Ni), assembled by π interactions, which have a behavior as a supramolecular system. These electrodes showed an important electrocatalytic ac...

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Autores principales: NAVARRETE,NATALIA, CANALES,CAMILA, DEL RIO,RODRIGO, RAMÍREZ,GALO
Lenguaje:English
Publicado: Sociedad Chilena de Química 2013
Materias:
Supramolecular
phthalocyanines
Modified electrode
Nitrite Electro-oxidation
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400013
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spelling oai:scielo:S0717-970720130004000132014-09-02ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATIONNAVARRETE,NATALIACANALES,CAMILADEL RIO,RODRIGORAMÍREZ,GALO Supramolecular phthalocyanines Modified electrode Nitrite Electro-oxidation In this work, it proposed the developing of a new material, a modified electrode with metallic phthalocyanines stacking columns, MxPc (Mx = Co, Fe and Ni), assembled by π interactions, which have a behavior as a supramolecular system. These electrodes showed an important electrocatalytic activity against nitrite oxidation, compared to the same complexes monomer multilayers adsorbed on the electrode (M-MxPc). It is proposed two new obtaining methods of these systems, S1-MxPc, where the complexes would form a column and would be coordinated with the surface electrode through a covalent bond of 4-aminopyridine (4-AP), and S2-MxPc, where the own functional groups of glassy carbon (GC) would be the covalent unions able to coordinate the complexes and the columns formation. These covalent unions between the electrode surface and phthalocyanines, would give a directional stacking, and therefore, would modify both its electrocatalytical activity and its electrical features. It was also studied the dependence between the activity and the complex central metal (Co, Fe and Ni), finding a great dependence between them. It was found that the S2-MxPc modified electrodes were more stables and actives. The higher activity was found on S2-CoPc, which also performs a linear response. This last feature it is seen on a calibration curve with a large range of concentrations. It is important to notice that there is actually no relative information about the behavior of the new electrodes proposed on this work.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=S0717-97072013000400013en10.4067/S0717-97072013000400013
institution Scielo Chile
collection Scielo Chile
language English
topic Supramolecular
phthalocyanines
Modified electrode
Nitrite Electro-oxidation
spellingShingle Supramolecular
phthalocyanines
Modified electrode
Nitrite Electro-oxidation
NAVARRETE,NATALIA
CANALES,CAMILA
DEL RIO,RODRIGO
RAMÍREZ,GALO
ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION
description In this work, it proposed the developing of a new material, a modified electrode with metallic phthalocyanines stacking columns, MxPc (Mx = Co, Fe and Ni), assembled by π interactions, which have a behavior as a supramolecular system. These electrodes showed an important electrocatalytic activity against nitrite oxidation, compared to the same complexes monomer multilayers adsorbed on the electrode (M-MxPc). It is proposed two new obtaining methods of these systems, S1-MxPc, where the complexes would form a column and would be coordinated with the surface electrode through a covalent bond of 4-aminopyridine (4-AP), and S2-MxPc, where the own functional groups of glassy carbon (GC) would be the covalent unions able to coordinate the complexes and the columns formation. These covalent unions between the electrode surface and phthalocyanines, would give a directional stacking, and therefore, would modify both its electrocatalytical activity and its electrical features. It was also studied the dependence between the activity and the complex central metal (Co, Fe and Ni), finding a great dependence between them. It was found that the S2-MxPc modified electrodes were more stables and actives. The higher activity was found on S2-CoPc, which also performs a linear response. This last feature it is seen on a calibration curve with a large range of concentrations. It is important to notice that there is actually no relative information about the behavior of the new electrodes proposed on this work.
author NAVARRETE,NATALIA
CANALES,CAMILA
DEL RIO,RODRIGO
RAMÍREZ,GALO
author_facet NAVARRETE,NATALIA
CANALES,CAMILA
DEL RIO,RODRIGO
RAMÍREZ,GALO
author_sort NAVARRETE,NATALIA
title ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION
title_short ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION
title_full ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION
title_fullStr ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION
title_full_unstemmed ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION
title_sort electrodes modified by Π stacking of metallic phthalocyanines and its electrocatalytic activity on nitrite oxidation
publisher Sociedad Chilena de Química
publishDate 2013
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400013
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AT canalescamila electrodesmodifiedby928stackingofmetallicphthalocyaninesanditselectrocatalyticactivityonnitriteoxidation
AT delriorodrigo electrodesmodifiedby928stackingofmetallicphthalocyaninesanditselectrocatalyticactivityonnitriteoxidation
AT ramirezgalo electrodesmodifiedby928stackingofmetallicphthalocyaninesanditselectrocatalyticactivityonnitriteoxidation
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