Ion Pairing in Ethanol/Water Solution Probed by Electrophoretic and Diffusion NMR
2009 (English)In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 131, no 39, 13900- p.Article in journal (Refereed) Published
We demonstrate that a combination of electrophoretic NMR and diffusion NMR experiments can measure the average charge carried by ions in solution. This average charge is used as a quantitative indicator of ion pairing. Our results show that there is a Hofmeister relation in the ion pairing between monovalent anions and the tetramethylammonium cation in 95% ethanol/water solution. The ion pairing of the divalent sulfate ion was larger than that shown by any of the monovalent anions.
Place, publisher, year, edition, pages
2009. Vol. 131, no 39, 13900- p.
HOFMEISTER SERIES, AQUEOUS-SOLUTIONS, ASSOCIATION, BINDING, ANIONS, SPECTROSCOPY, PROTEINS, MACROMOLECULES, ELECTROLYTES, SOLVATION
IdentifiersURN: urn:nbn:se:kth:diva-12201DOI: 10.1021/ja904959yISI: 000270433900008ScopusID: 2-s2.0-70349627254OAI: oai:DiVA.org:kth-12201DiVA: diva2:305710