Dynamics of Photodissociation of Small Molecules

小分子光解离动力学

• 批准号: 8910975
• 负责人: James Kinsey
• 金额: --
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-07-01 至 1993-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8910975&HistoricalAwards=false
• 关键词: Dynamics; Photodissociation; Small; Molecules

This research, part of the Experimental Physical Chemistry Program, focusses on experimental and theoretical studies of photodissociation. Details of early-time dynamics on the potential surface(s) of the electronically excited state(s) will be elucidated by means of spectroscopic techniques. Photodissociation is a process of central importance in photochemistry and represents one of the most widely studied classes of unimolecular reactions. The approach relies on the use of absorption spectroscopy and/or Raman spectroscopy. The basic measurements are the absolute Raman cross-sections for long progressions in ground-state vibrational numbers. These measurements will be done at several wavelengths within the absorption system comprising the dissociative continuum being studied. The polarization properties of the scattered light will be determined along with the other measurements. The theoretical work which will be directly supportive of the experimental work, will include dynamic studies modelling the specific molecules for which experiments are being done. Molecules to be studied include: alkylhalides, hydrogen peroxide, ozone and acetone.

这项研究是实验物理化学的一部分， 计划，侧重于实验和理论研究， 光解离地球上早期动力学的细节 电子激发态的电势表面 将通过光谱技术来阐明。 光解离是一个非常重要的过程， 光化学，代表了一个最广泛的研究 单分子反应的种类。 该方法依赖于吸收光谱的使用 和/或拉曼光谱。基本的测量方法是 绝对拉曼截面的长期进展， 基态振动数这些测量将是 在吸收系统内的几个波长下进行 包括正在研究的解离连续体。的 散射光的偏振特性将 与其它测量一起沿着确定。理论 将直接支持实验的工作 工作，将包括动态研究建模的具体 正在进行实验的分子。分子被 研究包括：烷基卤化物，过氧化氢，臭氧和 丙酮