Reaction dynamics studied via femtosecond X-ray liquidography at X-ray free-electron lasers,Chemical Science

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Reaction dynamics studied via femtosecond X-ray liquidography at X-ray free-electron lasers
Chemical Science ( IF 7.6 ) Pub Date : 2022-06-06 , DOI: 10.1039/d2sc00502f
Eun Hyuk Choi _{1,

2,

3} , Yunbeom Lee _{1,

2,

3} , Jun Heo _{1,

2,

3} , Hyotcherl Ihee _{1,

2,

3}

Affiliation

X-ray free-electron lasers (XFELs) provide femtosecond X-ray pulses suitable for pump–probe time-resolved studies with a femtosecond time resolution. Since the advent of the first XFEL in 2009, recent years have witnessed a great number of applications with various pump–probe techniques at XFELs. Among these, time-resolved X-ray liquidography (TRXL) is a powerful method for visualizing structural dynamics in the liquid solution phase. Here, we classify various chemical and biological molecular systems studied via femtosecond TRXL (fs-TRXL) at XFELs, depending on the focus of the studied process, into (i) bond cleavage and formation, (ii) charge distribution and electron transfer, (iii) orientational dynamics, (iv) solvation dynamics, (v) coherent nuclear wavepacket dynamics, and (vi) protein structural dynamics, and provide a brief review on each category. We also lay out a plausible roadmap for future fs-TRXL studies for areas that have not been explored yet.

中文翻译：

在 X 射线自由电子激光器上通过飞秒 X 射线液体成像研究反应动力学

X 射线自由电子激光器 (XFEL) 提供飞秒 X 射线脉冲，适用于具有飞秒时间分辨率的泵-探针时间分辨研究。自 2009 年第一个 XFEL 问世以来，近年来在 XFEL 上见证了各种泵探头技术的大量应用。其中，时间分辨 X 射线液相成像 (TRXL) 是一种强大的可视化液相溶液相结构动力学的方法。在这里，我们对通过以下方式研究的各种化学和生物分子系统进行分类XFEL 上的飞秒 TRXL (fs-TRXL)，取决于研究过程的重点，分为 (i) 键断裂和形成，(ii) 电荷分布和电子转移，(iii) 取向动力学，(iv) 溶剂化动力学，( v) 相干核波包动力学，和 (vi) 蛋白质结构动力学，并对每个类别进行简要回顾。我们还为尚未探索的领域制定了未来 fs-TRXL 研究的合理路线图。

更新日期：2022-06-06

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