Transition State Dynamics of Unconstrained Bimolecular Reactions

无约束双分子反应的过渡态动力学

• 批准号: 9812584
• 负责人: Marcos Dantus
• 金额: $ 31万
• 依托单位: Michigan State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-11-15 至 2001-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9812584&HistoricalAwards=false
• 关键词: Transition; State; Dynamics; Unconstrained; Bimolecular

Marcos Dantus is supported by the Experimental Physical Chemistry Program to study the ultrafast transition state dynamics of unconstrained bimolecular reactions. The primary goal is to gain significant insights into fundamental photoassociation reactions in order to understand better the breaking and formation of chemical bonds in collision processes. Specific projects include real-time dynamical studies of Hg + I2 and Na + HF bimolecular reactions, controlling the impact parameter in photoassociation, and exploring the dependence of photoassociation on the initiating laser pulse characteristics.Light absorption by a pair of unbound atoms or molecules while they are in proximity can lead them to react to form a new chemical bond. This process is called photoassociation. Outcomes from this research effort will lead to the elucidation of previously unmeasurable aspects of bimolecular chemistry, such as reaction dependence on closeness and orientation of colliding atoms and molecules. This understanding could impact studies of reactions relevant to combustion and atmospheric chemistry, for example. This research program also provides unique education and training opportunities for students at Michigan State University.

Marcos Dantus是由实验物理化学计划支持的，研究无约束双分子反应的超快过渡态动力学。主要目标是获得对基本光缔合反应的重要见解，以便更好地了解碰撞过程中化学键的断裂和形成。具体项目包括Hg + I2和Na + HF双分子反应的实时动力学研究，光缔合中冲击参数的控制，以及光缔合对起始激光脉冲特性的依赖。当一对未结合的原子或分子靠近时，它们对光的吸收会导致它们发生反应，形成新的化学键。这个过程被称为光联想。这项研究工作的结果将导致对以前无法测量的双分子化学方面的阐明，例如反应依赖于碰撞原子和分子的紧密性和方向。例如，这种理解可能会影响与燃烧和大气化学相关的反应研究。这个研究项目也为密歇根州立大学的学生提供了独特的教育和培训机会。