State- and time-resolved observation of ultrafast intermolecular proton transfer in hydrated biomolecules

作者：Jiaqi Zhou, Wu Lu, Michal Belina, A. D. Skitnevskaya, Shaokui Jia, Xiaorui Xue, Xintai Hao, Qingrui Zeng, Qing Ma, Yongtao Zhao, Xiaokai Li, Lanhai He, Sizuo Luo, Dongdong Zhang, Chuncheng Wang, Alexander B. Trofimov, Petr Slavı́ček, Dajun Ding, Xueguang Ren · 发表于：Nature Communications · 年份：2025 · DOI：10.1038/s41467-025-61305-z · 被引用次数：7 · 研究领域：Photochemistry and Electron Transfer Studies、Spectroscopy and Quantum Chemical Studies、Advanced Chemical Physics Studies

cations that subsequently undergo Coulomb explosion. The electron-impact experiments directly revealed initial states and provided dynamical insights through fragment ions and electron coincidence momentum imaging. The strong-field femtosecond laser experiments tracked the ultrafast dynamics of proton transfer; complementary ab initio calculations unraveled the dynamical details. The 50-60 fs proton transfer qualifies as one of the fastest acid-base reactions observed to date. This study offers a novel perspective on radiation-induced proton transfer in hydrated biomolecules.