A NUCLEAR-MAGNETIC-RESONANCE STUDY OF ION-EXCHANGE IN CATIONIC MICELLES - SUCCESSES AND FAILURES OF MODELS

被引：33

作者：

BLASKO, A ^{[1
]}

BUNTON, CA ^{[1
]}

CERICHELLI, G ^{[1
]}

MCKENZIE, DC ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA,DEPT CHEM,SANTA BARBARA,CA 93106

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 43期

关键词：

D O I：

10.1021/j100145a034

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The displacement of Br- or Cl- from cetyltrimethylammonium ion micelles by added anions can be monitored by following changes in line widths of Br-79- signals or line widths or chemical shifts of Cl-35- signals. Tosylate ion displaces Br- very strongly from micelles, and displacement by NO-3, N-3, Cl-, and HCO-2 is fitted by the pseudophase ion-exchange (PIE) model. This model fails for addition of OH- or F- to (CTA)Br, and of OH-to (CTA)Cl, but the displacement is fitted by the Poisson-Boltzmann equation (PBE). A rationalization is given for the ability of the PIE model to fit kinetic data for reactions of OH- in micellized (CTA)Br or (CTA)Cl even though it does not fit the NMR data.

引用

页码：11324 / 11331

页数：8

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