Characterization of Single Polymer Molecules

M. Radiom
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引用次数: 0

Abstract

This chapter offers an overview of the use of atomic force microscopy (AFM) in polymer studies. Soft AFM cantilevers with sharp tips are useful for their relatively high spatial resolution, a few nm, and force resolution, a few tens of pN. AFM imaging is used to characterize conformational properties of single polymer chains at solid-liquid interfaces. AFM force microscopy gives molecular elasticity as well as interaction forces of single polymer chains with solids. Recent technical developments have made possible the characterization of time-resolved mechanical properties of single polymer chains, including the relaxation time and internal friction. AFM force microscopy with biomolecules, supramolecules, and mechanophores reveals the forces required for, and the kinetics of, conformational transitions and chemical reactions in these molecules at the single-chain and single bond levels.
单体高分子分子的表征
本章概述了原子力显微镜(AFM)在聚合物研究中的应用。具有尖锐尖端的软AFM悬臂梁因其相对较高的空间分辨率(几纳米)和力分辨率(几十pN)而有用。原子力显微镜成像技术用于表征固液界面上单链聚合物的构象性质。AFM力显微镜给出分子弹性以及单聚合物链与固体的相互作用力。最近的技术发展使得表征单聚合物链的时间分辨力学性能成为可能,包括弛豫时间和内摩擦。生物分子、超分子和机械载体的AFM力显微镜揭示了这些分子在单链和单键水平上的构象转变和化学反应所需的力和动力学。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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