PREPARATION OF PALLADIUM THIN FILMS AND THEIR USEFULNESS AS MODIFIED ELECTRODES

Nanostructured palladium thin films have been photochemically obtained by direct UV irradiation (254 nm) of a Pd[C8H17COCHCOC4H 9]2 amorphous film deposited on Si(100) and on ITO glass by means of the spin-coating technique. The UV photolysis of thin films of palladium b-diketonate complex results i...

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Autores principales:	TEJOS,MARISOL, SCHREBLER,RICARDO, DÍAZ,FERNANDO, del VALLE,M.ANGÉLICA
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2002
Materias:	Pd thin film modified electrode conducting polymers polyaniline
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442002000200007
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spelling	oai:scielo:S0366-164420020002000072002-10-14PREPARATION OF PALLADIUM THIN FILMS AND THEIR USEFULNESS AS MODIFIED ELECTRODESTEJOS,MARISOLSCHREBLER,RICARDODÍAZ,FERNANDOdel VALLE,M.ANGÉLICA Pd thin film modified electrode conducting polymers polyaniline Nanostructured palladium thin films have been photochemically obtained by direct UV irradiation (254 nm) of a Pd[C8H17COCHCOC4H 9]2 amorphous film deposited on Si(100) and on ITO glass by means of the spin-coating technique. The UV photolysis of thin films of palladium b-diketonate complex results in the loss of all ligands from the coordination sphere. The acetylacetone derivative was chosen for its solid photochemistry, because the presence of branched hydrocarbons substituents lowers the intermolecular interactions, and allows the formation of high quality films upon spin-coating. The product of this photolysis was analyzed by XRD, SEM, and microanalysis. Afterwards, the film photodeposited on ITO glass was electrochemically studied, applying successive triangular scannings in a potential range of 0.00-1.30 V vs SCE for 15 minutes, in an electrolytic solution consisting in H2SO4 0.50 M. The modified electrode showed a profile similar to that of a palladium foil, although it is possible to observe that the peak potential shifts in 0.04 V approximately towards less positive values for the modified system, which is indicative of a possible catalytic effect. Based on these data, the modified ITO/Pd system was tested as an electrodic substrate for aniline polymerization in 0.10 M H2SO4; there obtaining a polymeric deposit, at lower potentials than those required when palladium foil was used as electrode, thus indicating that the method described may constitute a very interesting tool for the preparation of modified electrodes which may be advantageously used in the preparation of polymeric materialsinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaBoletín de la Sociedad Chilena de Química v.47 n.2 20022002-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442002000200007en10.4067/S0366-16442002000200007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Pd thin film modified electrode conducting polymers polyaniline
spellingShingle	Pd thin film modified electrode conducting polymers polyaniline TEJOS,MARISOL SCHREBLER,RICARDO DÍAZ,FERNANDO del VALLE,M.ANGÉLICA PREPARATION OF PALLADIUM THIN FILMS AND THEIR USEFULNESS AS MODIFIED ELECTRODES
description	Nanostructured palladium thin films have been photochemically obtained by direct UV irradiation (254 nm) of a Pd[C8H17COCHCOC4H 9]2 amorphous film deposited on Si(100) and on ITO glass by means of the spin-coating technique. The UV photolysis of thin films of palladium b-diketonate complex results in the loss of all ligands from the coordination sphere. The acetylacetone derivative was chosen for its solid photochemistry, because the presence of branched hydrocarbons substituents lowers the intermolecular interactions, and allows the formation of high quality films upon spin-coating. The product of this photolysis was analyzed by XRD, SEM, and microanalysis. Afterwards, the film photodeposited on ITO glass was electrochemically studied, applying successive triangular scannings in a potential range of 0.00-1.30 V vs SCE for 15 minutes, in an electrolytic solution consisting in H2SO4 0.50 M. The modified electrode showed a profile similar to that of a palladium foil, although it is possible to observe that the peak potential shifts in 0.04 V approximately towards less positive values for the modified system, which is indicative of a possible catalytic effect. Based on these data, the modified ITO/Pd system was tested as an electrodic substrate for aniline polymerization in 0.10 M H2SO4; there obtaining a polymeric deposit, at lower potentials than those required when palladium foil was used as electrode, thus indicating that the method described may constitute a very interesting tool for the preparation of modified electrodes which may be advantageously used in the preparation of polymeric materials
author	TEJOS,MARISOL SCHREBLER,RICARDO DÍAZ,FERNANDO del VALLE,M.ANGÉLICA
author_facet	TEJOS,MARISOL SCHREBLER,RICARDO DÍAZ,FERNANDO del VALLE,M.ANGÉLICA
author_sort	TEJOS,MARISOL
title	PREPARATION OF PALLADIUM THIN FILMS AND THEIR USEFULNESS AS MODIFIED ELECTRODES
title_short	PREPARATION OF PALLADIUM THIN FILMS AND THEIR USEFULNESS AS MODIFIED ELECTRODES
title_full	PREPARATION OF PALLADIUM THIN FILMS AND THEIR USEFULNESS AS MODIFIED ELECTRODES
title_fullStr	PREPARATION OF PALLADIUM THIN FILMS AND THEIR USEFULNESS AS MODIFIED ELECTRODES
title_full_unstemmed	PREPARATION OF PALLADIUM THIN FILMS AND THEIR USEFULNESS AS MODIFIED ELECTRODES
title_sort	preparation of palladium thin films and their usefulness as modified electrodes
publisher	Sociedad Chilena de Química
publishDate	2002
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0366-16442002000200007
work_keys_str_mv	AT tejosmarisol preparationofpalladiumthinfilmsandtheirusefulnessasmodifiedelectrodes AT schreblerricardo preparationofpalladiumthinfilmsandtheirusefulnessasmodifiedelectrodes AT diazfernando preparationofpalladiumthinfilmsandtheirusefulnessasmodifiedelectrodes AT delvallemangelica preparationofpalladiumthinfilmsandtheirusefulnessasmodifiedelectrodes
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PREPARATION OF PALLADIUM THIN FILMS AND THEIR USEFULNESS AS MODIFIED ELECTRODES

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