Počet záznamů: 1

Spectroelectrochemical determination of the electron consumption

  1. 1.
    0369665 - UFCH-W 2012 RIV NL eng J - Článek v odborném periodiku
    Kolivoška, Viliam - Gál, Miroslav - Lachmanová, Štěpánka - Valášek, Michal - Hromadová, Magdaléna - Pospíšil, Lubomír
    Spectroelectrochemical determination of the electron consumption.
    Analytica Chimica Acta. Roč. 697, 1-2 (2011), s. 23-26 ISSN 0003-2670
    Grant CEP: GA ČR GA203/09/0705; GA AV ČR IAA400400802; GA MŠk OC 140
    Výzkumný záměr: CEZ:AV0Z40400503; CEZ:AV0Z40550506
    Klíčová slova: coulometry * spectroelectrochemistry * elecrolysis
    Kód oboru RIV: CG - Elektrochemie
    Impakt faktor: 4.555, rok: 2011

    Measurements of UV-vis spectra as a function of the consumed charge in an optically transparent thin layer cell (OTTLE) offer a fast, small-volume and reliable method for the determination of the number of electrons n exchanged in the redox reaction. The determination of n is based on the calibration procedure using the ferrocene oxidation and the methyl viologen reduction. Virtues of this method are demonstrated on the determination of n of two oligomers of 'extended viologens' with multiple redox centers and correspondingly large n. The described method eliminates problems of side reactions of reactive intermediates with the parent oxidized form, which often impede a reliable estimation of n by the established coulometric method.
    Trvalý link: http://hdl.handle.net/11104/0203678