Sartin Matthew M, Su Hai-Sheng, Wang Xiang, Ren Bin
State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
J Chem Phys. 2020 Nov 7;153(17):170901. doi: 10.1063/5.0027917.
Dynamics are fundamental to all aspects of chemistry and play a central role in the mechanism and product distribution of a chemical reaction. All dynamic processes are influenced by the local environment, so it is of fundamental and practical value to understand the structure of the environment and the dynamics with nanoscale resolution. Most techniques for measuring dynamic processes have microscopic spatial resolution and can only measure the average behavior of a large ensemble of sites within their sampling volumes. Tip-enhanced Raman spectroscopy (TERS) is a powerful tool for overcoming this limitation due to its combination of high chemical specificity and spatial resolution that is on the nanometer scale. Adapting it for the study of dynamic systems remains a work in progress, but the increasing sophistication of TERS is making such studies more routine, and there are now growing efforts to use TERS to examine more complex processes. This Perspective aims to promote development in this area of research by highlighting recent progress in using TERS to understand reacting and dynamic systems, ranging from simple model reactions to complex processes with practical applications. We discuss the unique challenges and opportunities that TERS presents for future studies.
动力学是化学各个方面的基础，在化学反应的机理和产物分布中起着核心作用。所有动态过程都受到局部环境的影响，因此以纳米级分辨率了解环境结构和动力学具有重要的基础和实际价值。大多数测量动态过程的技术具有微观空间分辨率，只能测量其采样体积内大量位点的平均行为。针尖增强拉曼光谱（TERS）是克服这一限制的有力工具，因为它结合了高化学特异性和纳米级的空间分辨率。将其应用于动态系统的研究仍在不断发展中，但TERS日益成熟，使得此类研究更加常规化，目前人们越来越努力地使用TERS来研究更复杂的过程。本综述旨在通过强调使用TERS理解反应和动态系统（从简单的模型反应到具有实际应用的复杂过程）的最新进展，推动该研究领域的发展。我们讨论了TERS在未来研究中面临的独特挑战和机遇。
