NMR paramagnetic probing of polymer solutions using manganese(II) ions

被引：13

作者：

Amirov, R. R. ^{[1
]}

Burilova, E. A. ^{[1
]}

Zhuravleva, Yu. I. ^{[1
]}

Zakharov, A. V. ^{[1
]}

Ziyatdinova, A. B. ^{[1
]}

机构：

[1] Kazan Volga Reg Fed Univ, Ul Kremlevskaya 18, Kazan 420008, Russia

来源：

POLYMER SCIENCE SERIES C | 2017年 / 59卷 / 01期

关键词：

MAGNETIC-RELAXATION; PROTON RELAXATION; COMPLEX-FORMATION; METAL-COMPLEXES; BINDING; GADOLINIUM(III); EQUILIBRIUM; COPPER(II); RESONANCE; MICELLES;

D O I：

10.1134/S1811238217010015

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Nuclear magnetic relaxation studies show that manganese(II) ions can serve as paramagnetic probes for investigation of aqueous solutions of polyelectrolytes (polystyrene sulfonate and polyethylenimine) and their mixtures. The analysis of the measured rates of spin-lattice (R (1)) and spin-spin (R (2)) relaxations reveals the differences in the binding character of manganese(II) ions with polystyrene sulfonate and polyethylenimine. In a mixture of the polymers in acidic and neutral media, manganese(II) forms two types of ternary complexes. Using the suggested method for definition of the hydration degree of a coordination sphere of the bound probe ions, the number of water molecules in the first sphere of the polymer-bound manganese(II) ions is found on the basis of the value of the R (2)/R (1) ratio.

引用

页码：133 / 140

页数：8

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