Evidence of Higher Complexes Between Cucurbit[7]uril and Cationic Surfactants

被引：16

作者：

Pessego, M. ^{[1
]}

Moreira, J. A. ^{[2
]}

Garcia-Rio, L. ^{[1
]}

机构：

[1] Univ Santiago, Dept Quim Fis, Ctr Singular Invest Quim Biol & Mat Mol CIQUS, Santiago 15782, Spain

[2] Univ Algarve, CIQA, Dept Quim & Farm, Fac Ciencias & Tecnol, P-8005139 Faro, Portugal

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2012年 / 18卷 / 25期

关键词：

inclusion compounds; kinetics; NMR spectroscopy; supramolecular chemistry; surfactants; HOST-GUEST COMPLEXES; CUCURBITURIL HOMOLOGS; LIGAND-BINDING; DIFFUSION; FLUORESCENCE;

D O I：

10.1002/chem.201103049

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The hostguest assembly of CB7 with a series of alkyl(trimethyl)ammonium (CnTA+) surfactants of different chain lengths (n=618) has been studied. The complexation behaviour was investigated by NMR spectroscopy, isothermal titration calorimetry and kinetics measurements. The combined results of these techniques provided evidence for the formation of 1:1 inclusion and 2:1 external complexes in the cases of CnTA+ with n=1218. The binding constants for the 1:1 complexes are independent of the alkyl chain length of the surfactant, whereas a relationship between K2:1 and the chain length of the surfactant was found for the 2:1 complexes.

引用

页码：7931 / 7940

页数：10

共 37 条

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