The EPR technique is commonly used for the detection and characterization of paramagnetic centers in chemical science. This method can provides a lot of information, such as identity, structure, dynamics, interaction, orientation, glass transition temperature, adsorption behavior, functionality, phase behavior, nano‐inhomogeneities, and conformation of the free‐radical portion of the polymer chain. Most polymers intrinsically possess diamagnetic properties, so in order to study polymers with EPR, paramagnetic centers need to be incorporated into the polymer systems. Spin labeling and spin probing are main methods of covalently attaching paramagnetic centers to polymer chains or embedding them in polymer matrices through non‐covalent interactions, respectively. Spin labeling and spin probing techniques for polymers and polymer systems (especially with nitroxide radicals) have also been studied, which have a profound impact on polymer science. This review focuses on the continuous wave EPR technique and introduces the recent advances in spin labeled polymers and spin probed polymer systems in EPR research.

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EPR研究自旋标记聚合物和自旋探针聚合物系统的最新进展

EPR技术通常用于化学科学中顺磁中心的检测和表征。该方法可以提供很多信息，例如身份，结构，动力学，相互作用，取向，玻璃化转变温度，吸附行为，功能，相行为，纳米不均匀性以及聚合物链的自由基部分的构象。大多数聚合物本质上都具有抗磁性，因此，为了研究具有EPR的聚合物，需要将顺磁中心纳入聚合物系统中。自旋标记和自旋探测是将顺磁中心共价连接到聚合物链上或分别通过非共价相互作用将它们嵌入聚合物基质中的主要方法。还研究了聚合物和聚合物系统（尤其是带有氮氧化物自由基）的自旋标记和自旋探测技术，这对聚合物科学产生了深远的影响。这篇综述着重于连续波EPR技术，并介绍了EPR研究中自旋标记聚合物和自旋探针聚合物系统的最新进展。