Počet záznamů: 1

Ionic partition diagram of tetraphenylporphyrin at the water|1,2-dichloroethane interface

  1. 1.
    0359544 - UFCH-W 2012 RIV CH eng J - Článek v odborném periodiku
    Nia, R. P. - Su, B. - Méndez, M. A. - Barbe, J.-M. - Samec, Zdeněk - Girault, H. H.
    Ionic partition diagram of tetraphenylporphyrin at the water|1,2-dichloroethane interface.
    Journal of Electroanalytical Chemistry. Roč. 656, 1-2 (2011), s. 147-151 ISSN 1572-6657
    Grant CEP: GA MŠk OC 177
    Výzkumný záměr: CEZ:AV0Z40400503
    Klíčová slova: porphyrin * free-base * ionic partition diagram * voltammetry
    Kód oboru RIV: CG - Elektrochemie
    Impakt faktor: 2.905, rok: 2011

    From the thermodynamic data obtained by ion-transfer voltammetry, we derive here the ionic partition diagram of 5,10,15,20-tetraphenyl-21H,23H-porphine (H2TPP) at the water|1,2-dichloroethane interface using a simple Born solvation model. This zone diagram shows under which form this porphyrin is present, i.e. neutral, monoprotonated or diprotonated, and in which phase i.e. either in the aqueous or the organic phase as a function of the aqueous pH and the interface polarisation that can be controlled externally or by the distribution of supporting electrolytes. This diagram explains why the monoprotonated form has been difficult to observe when doing biphasic pH titrations.
    Trvalý link: http://hdl.handle.net/11104/0197316