MacDonald, Stuart M. ; Opallo, Marcin 
; Klamt, Andreas ; Eckert, Frank ; Marken, Frank
Alternative Links zum Volltext:DOIVerlag
| Dokumentenart: | Artikel |
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| Titel eines Journals oder einer Zeitschrift: | Physical Chemistry Chemical Physics |
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| Verlag: | ROYAL SOC CHEMISTRY |
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| Ort der Veröffentlichung: | CAMBRIDGE |
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| Band: | 10 |
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| Nummer des Zeitschriftenheftes oder des Kapitels: | 26 |
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| Seitenbereich: | S. 3925 |
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| Datum: | 2008 |
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| Institutionen: | Chemie und Pharmazie > Institut für Physikalische und Theoretische Chemie |
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| Identifikationsnummer: | | Wert | Typ |
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| 10.1039/b803582b | DOI |
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| Stichwörter / Keywords: | LIQUID/LIQUID INTERFACE; REDOX LIQUID; SOLVENTS; WATER; MICRODROPLETS; SYSTEMS; DRIVEN; ANIONS; APPROXIMATION; MICROSCOPY; |
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| Dewey-Dezimal-Klassifikation: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
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| Status: | Veröffentlicht |
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| Begutachtet: | Ja, diese Version wurde begutachtet |
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| An der Universität Regensburg entstanden: | Ja |
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| Dokumenten-ID: | 68599 |
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Web of Science
Zusammenfassung
Understanding liquid\liquid ion transfer processes is important in particular for naturally occurring species such as carboxylates. In this study electrochemically driven mono-, di-, and tri-carboxylate anion transfer at the 4-(3-phenylpropyl) pyridine\aqueous electrolyte interface is investigated experimentally for a triple phase boundary system at graphite electrodes. The ...
Zusammenfassung
Understanding liquid
ion transfer processes is important in particular for naturally occurring species such as carboxylates. In this study electrochemically driven mono-, di-, and tri-carboxylate anion transfer at the 4-(3-phenylpropyl) pyridine
electrolyte interface is investigated experimentally for a triple phase boundary system at graphite electrodes. The tetraphenylporphyrinato-Mn(III/II) redox system (Mn(III/II)TPP) dissolved in the water-immiscible organic phase (4-(3-phenylpropyl) pyridine) is employed for the quantitative study of the structure-Gibbs transfer energy correlation and the effects of the solution pH on the carboxylate transfer process. For di- and tri-carboxylates the partially protonated anions are always transferred preferentially even at a pH higher than the corresponding pK(a). COSMO-RS computer simulations are shown to provide a quantitative rationalisation as well as a powerful tool for predicting Gibbs free energy of transfer data for more complex functionalised carboxylate anions. It is shown that the presence of water in the organic phase has a major effect on the calculated Gibbs free energies.
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