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聚两性电解质冷冻凝胶的物理化学、络合及催化性能

Physicochemical, Complexation and Catalytic Properties of Polyampholyte Cryogels.

作者信息

Kudaibergenov Sarkyt E

机构信息

Institute of Polymer Materials and Technology, Microregion "Atyrau 1", house 3/1, Almaty 050019, Kazakhstan.

Laboratory of Engineering Profile, K.I. Satpayev Kazakh National Research Technical University, Satpayev Str. 22, Almaty 050013, Kazakhstan.

出版信息

Gels. 2019 Feb 21;5(1):8. doi: 10.3390/gels5010008.

DOI:10.3390/gels5010008
PMID:30795568
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6473870/
Abstract

Polyampholyte cryogels are a less considered subject in comparison with cryogels based on nonionic, anionic and cationic precursors. This review is devoted to physicochemical behavior, complexation ability and catalytic properties of cryogels based on amphoteric macromolecules. Polyampholyte cryogels are able to exhibit the stimuli-responsive behavior and change the structure and morphology in response to temperature, pH of the medium, ionic strength and water⁻organic solvents. Moreover, they can uptake transition metal ions, anionic and cationic dyes, ionic surfactants, polyelectrolytes, proteins, and enzymes through formation of coordination bonds, hydrogen bonds, and electrostatic forces. The catalytic properties of polyampholyte cryogels themselves and with immobilized metal nanoparticles suspended are outlined following hydrolysis, transesterification, hydrogenation and oxidation reactions of various substrates. Application of polyampholyte cryogels as a protein-imprinted matrix for separation and purification of biomacromolecules and for sustained release of proteins is demonstrated. Comparative analysis of the behavior of polyampholyte cryogels with nonionic, anionic and cationic precursors is given together with concluding remarks.

摘要

与基于非离子、阴离子和阳离子前体的冷冻凝胶相比，聚两性电解质冷冻凝胶是一个较少受到关注的课题。本综述致力于基于两性大分子的冷冻凝胶的物理化学行为、络合能力和催化性能。聚两性电解质冷冻凝胶能够表现出刺激响应行为，并根据温度、介质的pH值、离子强度和水-有机溶剂改变其结构和形态。此外，它们可以通过形成配位键、氢键和静电力来吸收过渡金属离子、阴离子和阳离子染料、离子表面活性剂、聚电解质、蛋白质和酶。在各种底物的水解、酯交换、氢化和氧化反应之后，概述了聚两性电解质冷冻凝胶本身以及悬浮有固定化金属纳米颗粒时的催化性能。展示了聚两性电解质冷冻凝胶作为蛋白质印迹基质用于生物大分子的分离和纯化以及蛋白质的缓释。给出了聚两性电解质冷冻凝胶与非离子、阴离子和阳离子前体行为的比较分析以及总结性评论。

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