二维相关红外光谱分析技术在高分子表征中的应用  

Applications of Two-dimensional Correlation Infrared Spectroscopy in the Characterization of Polymers

作　　者：侯磊 武培怡[1] Lei Hou;Pei-yi Wu(College of Chemistry,Chemical Engineering and Biotechnology,Donghua University,Shanghai 201620)

机构地区：[1]东华大学化学化工与生物工程学院,上海201620

出　　处：《高分子学报》2022年第5期522-538,共17页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号21803010,51733003)资助项目。

摘　　要：二维相关红外光谱作为一种先进的光谱分析方法,具有提高谱图分辨率、解析动态过程等优势,近来在高分子表征中引起了越来越多的关注.高分子体系涉及了丰富的相互作用和复杂的结构,分子光谱是常用的表征手段,而借助二维相关光谱分析技术,能够有效识别精细结构、判别动态变化机制,从而显著丰富和完善分析结果.本文重点围绕二维相关红外光谱,简述了发展历史和基本原理,随后结合实际过程,介绍了相关实验和分析技巧,最后列举了其在高分子表征中的典型应用,展示了二维相关红外光谱分析的特点,具体涉及温度响应高分子的响应机制、可拉伸离子导体中复杂相互作用、小分子在聚合物基质中的扩散、天然高分子的结构表征等研究.希望通过本文的介绍,能够帮助读者更好地理解二维相关光谱,进一步拓展其在高分子领域中的应用.Two-dimensional correlation spectroscopy(2Dcos)is an advanced analysis method,which holds great advantages in improving spectral resolutions and interpreting dynamic processes,and has attracted great attention in the field of polymers.Molecular spectroscopy is frequently applied in the characterization of polymers,which involves abundant molecular interactions and complex structures.Under the help of 2Dcos analysis,fine structures as well as dynamic mechanisms within the polymer systems can be effectively identified,thus significantly enriching and improving the analysis results.In this paper,we will mainly focus on the two dimensional correlation infrared spectroscopy(2DIR).Firstly,the history and basic principles of 2Dcos are briefly introduced.Then,some relevant experimental and analytical techniques are presented based on the actual process.Finally,typical applications of 2DIR in the polymer characterization are demonstrated and the features thereinto are also shown.Particularly,the response mechanisms of temperature-responsive polymers,complex molecular interactions in stretchable ionic conductors,diffusion processes of small molecules in polymer matrix and structures of natural polymers are investigated.It is hoped that this paper will help readers better understand 2Dcos and further expand its applications in the field of polymers.

关 键 词：分子光谱 二维相关光谱 高分子 分子相互作用 

分 类 号：O657.33[理学—分析化学] TQ317.2[理学—化学]