Time-resolved Intramolecular Photoelectron Diffraction (TIPD) of Ions in the Gas-phase

气相离子的时间分辨分子内光电子衍射 (TIPD)

• 批准号: EP/V047787/1
• 负责人: Jan Verlet
• 金额: $ 25.67万
• 依托单位: Durham University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FV047787%2F1
• 关键词: Time; resolved; Intramolecular; Photoelectron; Diffraction

Being able to probe structural (electronic and geometric) change on the timescale of atomic motion(femtoseconds) offers the most direct route to understanding the structure-function relationship inchemistry, which underpins much of modern technology. Here, we propose the conceptually novelmethod, Time-resolved Intramolecular Photoelectron Diffraction (TIPD), in which photoelectrons arediffracted from negatively-charged functional groups in a mass-selected gas-phase polyanion. Themeasured interferogram contains structural information about the location of charge-sites relative tothe molecular orbital from which an electron is detached. It can be measured with sub-100 fsresolution to enable real-time probing of photoinduced processes including charge-transferprocesses and structural transformations in, for example, proteins and conducting polymers.

能够在原子运动（飞秒）的时间尺度上探测结构（电子和几何）变化，为理解化学中的结构-功能关系提供了最直接的途径，这是许多现代技术的基础。在这里，我们提出了概念上的新方法，时间分辨分子内光电子衍射（TIPD），其中光电子从大量选择的气相多阴离子中的带负电荷的官能团中衍射出来。测量的干涉图包含有关电荷位置相对于电子脱离的分子轨道的结构信息。它可以以低于100英尺的分辨率进行测量，以实现光诱导过程的实时探测，包括电荷转移过程和结构转变，例如蛋白质和导电聚合物。

项目成果

Kasha's Rule and Koopmans' Correlations for Electron Tunnelling through Repulsive Coulomb Barriers in a Polyanion.

• DOI: 10.1021/acs.jpclett.2c02145
• 发表时间: 2022-08-25
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY LETTERS
• 影响因子: 5.7
• 作者: Gibbard, Jemma A.;Verlet, Jan R. R.
• 通讯作者: Verlet, Jan R. R.