Experimental and Theoretical Investigation of Photo- dissociation on MgO(001)

MgO(001)光解离的实验和理论研究

• 批准号: 8800705
• 负责人: Peter Stair
• 金额: $ 35.41万
• 依托单位: Northwestern University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-15 至 1991-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8800705&HistoricalAwards=false
• 关键词: Experimental; Theoretical; Investigation; Photo; dissociation

This grant, funded jointly by Special Projects in Chemistry and the Division of Materials Research provides support for the research of Profs. Stair and Weitz at Northwestern University. The objective of the research is to study, both experimentally and theoretically, the photodissociation dynamics of small molecules adsorbed on single-crystal insulator surfaces. Such information is of importance to the understanding of photochemistry at the gas-solid interface. In addition to studies of the adsorption and surface chemistry of the adsorbed molecular species, the experimental program will also focus on measurements of the angular distribution, the kinetic energy distribution and the rotational and vibrational distributions of the photodissociated fragments. The molecules to be studied were selected as representative examples of rapid direct and predissociative photodissociation mechanisms on the basis of gas phase photodissociation measurements. They also provide both atomic and molecular fragments that are amenable to high sensitivity detection as well as theoretical description. The magnesium oxide adsorbant surface was selected for its insulating properties,ease of handling and characterization and its chemical stability. Theoretical models to be developed will aim at calculating the experimentally measured fragment distributions.

该资助由化学特别项目和材料研究部联合资助，为教授的研究提供支持。西北大学的斯泰尔和韦茨。 该研究的目的是从实验和理论上研究吸附在单晶绝缘体表面的小分子的光解动力学。这些信息对于理解气固界面的光化学非常重要。 除了研究吸附分子种类的吸附和表面化学外，实验计划还将重点测量光解碎片的角度分布、动能分布以及旋转和振动分布。 基于气相光解离测量，选择要研究的分子作为快速直接和预解离光解离机制的代表性例子。 它们还提供适合高灵敏度检测和理论描述的原子和分子片段。选择氧化镁吸附剂表面是因为其绝缘性能、易于处理和表征以及化学稳定性。 待开发的理论模型将旨在计算实验测量的碎片分布。