An NMR Investigation of Fast Proton Transfer along the Surface of Cationic Micelles | Zendy

DupontLeclercq Laurence | Zendy; Delpuech JeanJacques | Zendy; Henry Bernard | Zendy

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An NMR Investigation of Fast Proton Transfer along the Surface of Cationic Micelles

Author(s) -

DupontLeclercq Laurence,

Delpuech JeanJacques,

Henry Bernard

Publication year - 2008

Publication title -

chemphyschem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.016

H-Index - 140

eISSN - 1439-7641

pISSN - 1439-4235

DOI - 10.1002/cphc.200800493

Subject(s) - micelle , cationic polymerization , proton , chemistry , polar , diffusion , proton nmr , head (geology) , chemical physics , stereochemistry , organic chemistry , aqueous solution , thermodynamics , physics , quantum mechanics , astronomy , geomorphology , geology

CMCs and proton exchange rates of cationic micelles are shown to increase linearly with 1/[H + ]. Enhanced proton transfers in micelles (see picture) are assigned to two major factors: a pH elevation of ca. 2 units around the micellar surface and a diffusion‐like proton switch from polar head to polar head. Rate enhancements are larger when the number of methylenic carbons in the surfactants used is increased from 8 to 10.

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