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Titolo:
Electrochemical characteristics of dip-coated poly (2-cinnamoylethyl methacrylate) (PCEMA) films on Au surfaces
Autore:
Xia, SJ; Liu, G; Birss, VI;
Indirizzi:
Univ Calgary, Dept Chem, Calgary, AB T2N 1N4, Canada Univ Calgary CalgaryAB Canada T2N 1N4 Chem, Calgary, AB T2N 1N4, Canada
Titolo Testata:
ELECTROCHIMICA ACTA
fascicolo: 4, volume: 46, anno: 2000,
pagine: 463 - 474
SICI:
0013-4686(200012)46:4<463:ECODP(>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANODIC OXIDE-FILMS; GOLD; ELECTRODES; ADSORPTION; POLYSTYRENE; REDUCTION; PALLADIUM; MONOLAYER; BEHAVIOR; KINETICS;
Keywords:
PCEMA (poly(2-cinnamoylethyl methacrylate) polymer film; cyclic voltammetry; ellipsometry; QCMB; dip-coating; coverage; DL lamination;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Birss, VI Univ Calgary, Dept Chem, 2500 Univ Dr, Calgary, AB T2N 1N4, Canada Univ Calgary 2500 Univ Dr Calgary AB Canada T2N 1N4 1N4, Canada
Citazione:
S.J. Xia et al., "Electrochemical characteristics of dip-coated poly (2-cinnamoylethyl methacrylate) (PCEMA) films on Au surfaces", ELECTR ACT, 46(4), 2000, pp. 463-474

Abstract

The electrochemical behavior of poly (2-cinnamoylethyl methacrylate) (PCEMA) coatings, dip-coated on Au electrodes from PCEMA/THF solutions, was investigated primarily in pH 7 buffer solution. The thickness and mass of the PCEMA coatings on Au sputter-coated quartz crystals, established using ellipsometry and mass measurement (QCMB) techniques, were found to initially increase rapidly and then linearly with increasing PCEMA concentration of the deposition solution, while the coating density was found to be higher at the PCEMA/Au interface. The PCEMA coverage of Au call be established from themagnitude of the compact Au oxide film (alpha -Au oxide) oxidation/reduction charges in pH 7 buffer solution and was found to increase with the concentration of PCEMA in the TI-IF solution. The presence of the PCEMA film on Au was found to promote the growth of a hydrous beta -Au oxide film, normally formed at bare Au only when much higher potentials are applied. The stability of the PCEMA coating in basic and acidic solutions, and the resistance of the PCEMA coating to degradation by extreme anodic and cathodic polarization, ale also discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.

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Documento generato il 30/09/20 alle ore 01:35:51