INTERACTION OF BACTERIAL ACIDIC POLYSACCHARIDE WITH CATIONIC DYES

被引：24

作者：

MITRA, A ^{[1
]}

NATH, RK ^{[1
]}

CHAKRABORTY, AK ^{[1
]}

机构：

[1] TRIPURA UNIV,DEPT CHEM,AGARTALA 799004,TRIPURA,INDIA

来源：

COLLOID AND POLYMER SCIENCE | 1993年 / 271卷 / 11期

关键词：

BACTERIAL POLYMER; CATIONIC DYE; DYE-POLYMER INTERACTION; METACHROMASY; CHROMOTROPIC PROPERTY; THERMODYNAMIC PARAMETERS;

D O I：

10.1007/BF00659293

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 interaction of acidic capsular polysaccharide isolated from Klebsiella K26 with cationic dyes pinacyanol chloride, acridine orange and phenosafranin has been studied by spectral measurements. The polymer induces metachromasy in pinacyanol chloride dye, indicating a blue shift in the visibly absorption spectrum of the dye from 600 to 500 nm. The stoichiometry of polymer/dye in the metachromatic compound, thermodynamic parameters of interaction, and effects of different cosolvents on the stability of the complex have been studied. Spectrophotometric and spectrofluorometric properties of the interaction between the polymer and all three dyes are presented. The chromotropic property of the polymer has been established.

引用

页码：1042 / 1048

页数：7

共 14 条

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