掌握飞秒受激拉曼光谱:实用指南

IF 3.7 Q2 CHEMISTRY, PHYSICAL ACS Physical Chemistry Au Pub Date : 2023-10-21 DOI:10.1021/acsphyschemau.3c00031
Pauline G. Lynch, Aritra Das, Shahzad Alam, Christopher C. Rich and Renee R. Frontiera*, 
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引用次数: 0

摘要

飞秒受激拉曼光谱(FSRS)是一种功能强大的非线性光谱技术,能以较高的时间和光谱分辨率探测分子和材料结构的变化。通过适当的光谱解释,这相当于以飞秒到皮秒的时间分辨率绘制出高非谐激发态势能面上的反应路径。FSRS 已被用于研究各种样品的结构动态,包括光活性蛋白质、光伏材料、等离子体纳米结构、聚合物和其他一系列样品,世界各地的多个研究小组都开展了相关实验。随着 FSRS 技术的普及,越来越多的用户设施采用了该技术,因此需要广泛了解该方法和最佳实践。在这篇综述中,我们将介绍 FSRS 的实用指南,包括对仪器以及数据采集和分析的讨论。首先,我们介绍了产生 FSRS 所需的三个脉冲(探针、拉曼泵和放电泵)的常用方法,包括讨论选择光束产生方法时需要考虑的参数。然后,我们概述了有效和高效的 FSRS 数据采集方法。我们将讨论 FSRS 的常用数据分析技术,以及旨在提取大背景中微小信号的更高级分析技术。最后,我们讨论了 FSRS 研究的一些新方向,包括光谱学。总之,本综述为研究人员提供了 FSRS 技术的实用手册,旨在鼓励许多科学家和工程师在研究中使用 FSRS。
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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Mastering Femtosecond Stimulated Raman Spectroscopy: A Practical Guide

Femtosecond stimulated Raman spectroscopy (FSRS) is a powerful nonlinear spectroscopic technique that probes changes in molecular and material structure with high temporal and spectral resolution. With proper spectral interpretation, this is equivalent to mapping out reactive pathways on highly anharmonic excited-state potential energy surfaces with femtosecond to picosecond time resolution. FSRS has been used to examine structural dynamics in a wide range of samples, including photoactive proteins, photovoltaic materials, plasmonic nanostructures, polymers, and a range of others, with experiments performed in multiple groups around the world. As the FSRS technique grows in popularity and is increasingly implemented in user facilities, there is a need for a widespread understanding of the methodology and best practices. In this review, we present a practical guide to FSRS, including discussions of instrumentation, as well as data acquisition and analysis. First, we describe common methods of generating the three pulses required for FSRS: the probe, Raman pump, and actinic pump, including a discussion of the parameters to consider when selecting a beam generation method. We then outline approaches for effective and efficient FSRS data acquisition. We discuss common data analysis techniques for FSRS, as well as more advanced analyses aimed at extracting small signals on a large background. We conclude with a discussion of some of the new directions for FSRS research, including spectromicroscopy. Overall, this review provides researchers with a practical handbook for FSRS as a technique with the aim of encouraging many scientists and engineers to use it in their research.

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来源期刊
CiteScore
3.70
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期刊介绍: ACS Physical Chemistry Au is an open access journal which publishes original fundamental and applied research on all aspects of physical chemistry. The journal publishes new and original experimental computational and theoretical research of interest to physical chemists biophysical chemists chemical physicists physicists material scientists and engineers. An essential criterion for acceptance is that the manuscript provides new physical insight or develops new tools and methods of general interest. Some major topical areas include:Molecules Clusters and Aerosols; Biophysics Biomaterials Liquids and Soft Matter; Energy Materials and Catalysis
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