超快速激发状态非adiabatic动力学在Pt(II) 捐赠器-桥梁-接收器组件:光学控制的量子方法
Souvik Mandal1, Chantal Daniel1
1Laboratoire de Chimie Quantique, Institut de Chimie Strasbourg, UMR-7177 CNRS, Université de Strasbourg, 1 Rue Blaise Pascal BP 296/R8, F-67008 Strasbourg, France.
The journal of physical chemistry. A
|April 15, 2024
概括
复合体中的超快动态是由自旋振动机制驱动的. 选择性振动激发提供了一条控制激发状态群体和光产品的途径.
科学领域:
- 摄影化学和光物理
- 量子动力学 量子动力学是什么?
- 计算化学计算化学
背景情况:
- ((II) 复合体具有捐赠者-桥梁-接受器结构,是光采集和光氧化催化中的关键.
- 了解激发状态动态对于设计高效的光驱动过程至关重要.
研究的目的:
- 用量子力学方法研究Pt(II) 复合体的超快的非adiabatic兴奋状态动力学.
- 阐明旋转轨道合和振动合在激发状态衰变路径中的作用.
- 通过选择性振动激发来探索光产品分支比率的光学控制潜力.
主要方法:
- 使用多配置时间依赖的哈特树 (MCTDH) 方法进行波包传播模拟.
- 在时间依赖密度函数理论 (TD-DFT) 层面的电子结构计算.
- 将旋转轨道合 (SOC) 和振动合纳入11个状态的多模式模型,最多有18个振动模式.
主要成果:
- 确定了控制亚皮秒激发状态衰变的关键自旋振动机制.
- 在旋转轨道和振动激活的超高速过程之间进行区分.
- 证明特定的振动模式,如N-曲,可以选择性地填充电荷分离状态,而不是电荷转移状态.
结论:
- 选择性激发振动模式可以引导非动动力学和控制光产品的形成.
- 这项量子研究为红外光学控制实验提供了理论基础.
- 旋转轨道合和振动效应的相互作用在这些Pt(II) 综合体的超快动态中至关重要.
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