Application of carbon electrodes modified with a mercury layer of a different thickness for studies of the adsorption and kinetics of phase transients of cytidine.

HASOŇ, Stanislav and Vladimír VETTERL. Application of carbon electrodes modified with a mercury layer of a different thickness for studies of the adsorption and kinetics of phase transients of cytidine. Journal of Electroanalytical Chemistry. The Netherlands: Elsevier, 2002, vol. 536, No 1, p. 19-35. ISSN 0022-0728.

Basic information

• Original name: Application of carbon electrodes modified with a mercury layer of a different thickness for studies of the adsorption and kinetics of phase transients of cytidine.
• Authors: HASOŇ, Stanislav (203 Czech Republic) and Vladimír VETTERL (203 Czech Republic, guarantor).
• Edition: Journal of Electroanalytical Chemistry, The Netherlands, Elsevier, 2002, 0022-0728.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10610 Biophysics
• Country of publisher: Czech Republic
• Confidentiality degree: is not subject to a state or trade secret
• Impact factor: Impact factor: 2.027
• RIV identification code: RIV/00216224:14310/02:00007358
• Organization unit: Faculty of Science
• Keywords in English: cytidine adlayers; two-dimensional condensation; nucleation and growth; mercury film electrodes; glassy carbon electrodes; pyrolytic graphite electrodes
• Tags: cytidine adlayers, glassy carbon electrodes, mercury film electrodes, nucleation and growth, pyrolytic graphite electrodes, two-dimensional condensation

Abstract

The kinetics of phase transients of cytidine adsorbed at pyrolytic graphite electrodes, glassy caron electrodes, and the same electrodes modified with a mercury layer (mercury film electrodes)was studied by chronoamperometry (j-t curves and capacitance measurements (C-t curves). In acidic solution (pH 5) the two-dimensional condensation of adsorbed cytidine molecules and formation of a compact layer takes place only in one potential region. In alkaline solution (pH 8.3) cytidine forms two different physisorbed condensed layers at the mercury film electrodes. The phase trasients between the dilute and compact cytidine layers are about three times faster in acid solution than in alkaline solution. As long as the thickness of the mercury layer was greater than 2um, pronounced current maxima characteristic for the nucleation process were observed on j-t curves during phase transients between dilute and compact layers.

Links

• GV204/97/K084, research and development project: Name: Elektrody modifikované nukleovými kyselinami a bílkovinami. Nové nástroje v biochemickém a biomedicínském výzkumu

Investor: Czech Science Foundation, Electrodes modified with nucleic acids and proteins. New tools in biochemical and biomedical research

• IAA4004002, research and development project: Name: Struktura a interakce nukleových kyselin a polypeptidů na površích kovů

Investor: Academy of Sciences of the Czech Republic, Structure and Interaction of Nucleic Acids on Metal Surfaces