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Titolo:
Preparation and general properties of chemically modified electrodes basedon electro synthesized thin polymeric films derived from eugenol
Autore:
Ciszewski, A; Milczarek, G;
Indirizzi:
Poznan Univ Technol, Inst Chem & Appl Electrochem, PL-60965 Poznan, PolandPoznan Univ Technol Poznan Poland PL-60965 chem, PL-60965 Poznan, Poland
Titolo Testata:
ELECTROANALYSIS
fascicolo: 10, volume: 13, anno: 2001,
pagine: 860 - 867
SICI:
1040-0397(200107)13:10<860:PAGPOC>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
GLASSY-CARBON ELECTRODE; ASCORBIC-ACID; NITRIC-OXIDE; ELECTROCHEMICAL POLYMERIZATION; GRAPHITE-ELECTRODES; DOPAMINE; CATECHOL; POLYANILINE; ELECTROPOLYMERIZATION; ELECTROCATALYSIS;
Keywords:
electropolymerization; permselectivity; hydrogen peroxide; nitric oxide; NADH; ascorbic acid; preconcentration;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Ciszewski, A Poznan Univ Technol, Inst Chem & Appl Electrochem, Piotrowo 3, PL-60965 Poznan, Poland Poznan Univ Technol Piotrowo 3 Poznan Poland PL-60965 Poland
Citazione:
A. Ciszewski e G. Milczarek, "Preparation and general properties of chemically modified electrodes basedon electro synthesized thin polymeric films derived from eugenol", ELECTROANAL, 13(10), 2001, pp. 860-867

Abstract

Eugenol (4-allyl-2-methoxyphenol) was polymerized oxidatively by cyclic voltammetry at platinum and glassy carbon electrodes. It was found that at platinum the polymerization gives rise to a uniform, compact film which couldserve as a permselective membrane for analytes of small molecular size. Applications of such films in selective detection of hydrogen peroxide and nitric monoxide were proposed. Monomer oxidation at glassy carbon resulted inless compact films. Interestingly, at higher potentials a porous structurecontaining large amount of unoxidized o-methoxyphenyl groups was created. This structure underwent electrochemical demethoxylation leading to the generation of redox active o-quinone functionalities when the modified electrode was cycled in acidic solution. A small amount of p-quinone functionalities was also generated. As could be anticipated the redox couples were capable of mediating electrochemical oxidation of ascorbic acid and NADH. Additionally polymeric eugenol-coated GC exhibited preconcentration capabilities towards dissolved metal cations. This effect was demonstrated on the electrochemical oxidation of preconcentrated Ce(III) and reduction of Cu(II).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 05:25:56