报告题目(Title):Pushing boundaries: nonadiabatic simulations of solvent-supported electronic states(突破边界:溶剂支撑电子态的非绝热模拟)
报告人(Speaker):William J.Glover(上海纽约大学)
报告时间(Time):2026年3月26日(星期三)14:00
报告地点(Place): 上大宝山校区东区7号楼510会议室
邀请人(Inviter):任伟教授,李永乐教授
主办部门:理学院物理系
摘要(Abstract):
Research
focuses on solvent-supported states, using the aqueous solvated
electron e⁻(aq) as a key example. Recent time-resolved photoelectron
experiments reveal an ultrafast 50‑fs deactivation upon photoexcitation,
challenging previous models based on ~200‑fs solvation dynamics. To
address this, a dynamically adaptive QM/MM embedding method was
developed that automatically adjusts the QM/MM boundary during
simulations, rigorously preserving ensemble averages and leaving the QM
dynamics unperturbed. Combined with nonadiabatic dynamics, this approach
rationalizes the ultrafast excited‑state lifetime of e⁻(aq) from an
electron‑transfer perspective, opening the door to studying
solution‑phase reactions where a quantum description of the solvent is
essential.
(研究聚焦于溶剂支撑态,以水合溶剂化电子 e⁻(aq)
为代表体系。近期时间分辨光电子实验揭示了光激发后存在50飞秒的超快失活过程,这与此前基于约200飞秒溶剂化动力学的模型相悖。为此,研究者发展了一种动态自适应QM/MM嵌入方法,能够在模拟过程中自动调整QM/MM边界,在严格保持系综平均的同时不扰动量子动力学。该方法与非绝热动力学相结合,从电子转移的角度合理阐释了
e⁻(aq) 超快激发态寿命的机制,为研究需对溶剂进行量子描述的重要溶液相反应开辟了新途径。)