Anionic Surfactants with Divalent Counterions of Separate Electric Charge. III. Proton NMR Study.
作者： Yoshikiyo Moroi , Ryohei Matuura , Tadashi Yonemitsu
DOI: 10.1246/BCSJ.64.3094
关键词:
摘要: The proton NMR spectra of 1-tetradecanesulfonates whose cationic counterion, the 1,1′-polymethylenedipyridinium ion (with even-numbered methylene groups up to 14), is divalent with separate electric charge, were measured. From chemical shifts pyridine rings found move about in quite hydrophilic environment micellar surface region, leading a downfield shift next head group surfactant ion. micellized counterions more than eight are different from those corresponding aqueous and similar hydrophobic interior. These results strongly support previous conclusion that polymethylene folds penetrates interior their state.
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