Complex formation of native and hydroxypropylated cyclodextrins with benzoic acid in aqueous solution: Volumetric and 1H NMR study

被引：20

作者：

Terekhova, Irina ^{[1
]}

Kozbial, Malgorzata ^{[2
]}

Kumeev, Roman ^{[1
]}

Gierycz, Pawel ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Solut Chem, Ivanovo 153045, Russia

[2] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland

来源：

CHEMICAL PHYSICS LETTERS | 2011年 / 514卷 / 4-6期

基金：

俄罗斯基础研究基金会;

关键词：

PARTIAL MOLAR VOLUME; INCLUSION COMPLEXES; BETA-CYCLODEXTRIN; ALPHA-CYCLODEXTRIN; CARBOXYLIC-ACIDS; THERMODYNAMIC PROPERTIES; CIRCULAR-DICHROISM; CONJUGATE BASES; WATER; TOPOGRAPHY;

D O I：

10.1016/j.cplett.2011.08.074

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：

Novel data on complexation of benzoic acid by parent and hydroxypropylated cyclodextrins were obtained by densimetry and H-1 NMR. Formation of 1: 1 inclusion complexes was detected in most cases with the exception of hydroxypropyl-gamma-cyclodextrin, which is able to form 1: 2 complexes. The data demonstrated penetration of carboxylic group of benzoic acid inside macrocyclic cavity, its insertion into beta-cyclodextrin cavity being deeper. Binding constants and volumes of transfer were calculated and analyzed in terms of influence of cyclodextrin structure on binding mode and driving forces of interaction as well as on the complex stability. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：341 / 346

页数：6

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