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Ionic partition diagram of tetraphenylporphyrin at the water|1,2-dichloroethane interface
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SYSNO ASEP 0359544 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Ionic partition diagram of tetraphenylporphyrin at the water|1,2-dichloroethane interface Author(s) Nia, R. P. (CH)
Su, B. (CH)
Méndez, M. A. (CH)
Barbe, J.-M. (FR)
Samec, Zdeněk (UFCH-W) RID, ORCID
Girault, H. H. (CH)Source Title Journal of Electroanalytical Chemistry. - : Elsevier - ISSN 1572-6657
Roč. 656, 1-2 (2011), s. 147-151Number of pages 5 s. Language eng - English Country CH - Switzerland Keywords porphyrin ; free-base ; ionic partition diagram ; voltammetry Subject RIV CG - Electrochemistry R&D Projects OC 177 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000291768300024 DOI 10.1016/j.jelechem.2010.12.001 Annotation 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. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2012
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