Mechanistic and Exploratory Organic Photochemistry

机理和探索性有机光化学

• 批准号: 9901049
• 负责人: Howard Zimmerman
• 金额: $ 44.7万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-08-01 至 2002-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9901049&HistoricalAwards=false
• 关键词: Mechanistic; Exploratory; Organic; Photochemistry

This project continues a variegated mechanistic organic research program that touches upon several aspects in the field. These include investigations of the chemistry of excited state organic molecules, where it remains to be determined if radiationless decay to alternative products or energy barriers on the excited state hypersurface govern the course of events. Methods used to probe these questions include quantum mechanical, theoretical, and experimental chemistry. A different endeavor involves the case where a reacting molecule is imbedded in a cavity of limited and irregular size. Conformational constraints then alter the otherwise observed course of the reaction. With this Award, the Organic and Macromolecular Chemistry Program continues support for the research of Professor Howard E. Zimmerman of the University of Wisconsin at Madison. Professor Zimmerman's research activities are in the area of mechanistic organic chemistry, which involves making close observations of chemical reactions under a variety of conditions in order to determine precisely how they occur. Since one cannot directly observe molecules as they react, one must devise other means of deducing these events. Particular emphasis in Professor Zimmerman's laboratories is given to reactions that are initiated by the absorption of light, and of molecules that are trapped within crystals.

这个项目继续了一个涉及该领域几个方面的多样化的机械有机研究计划。这些包括对激发态有机分子的化学研究，其中仍有待确定是否无辐射衰变到替代产物或激发态超表面上的能量障碍控制了事件的过程。用于探索这些问题的方法包括量子力学、理论和实验化学。另一种不同的尝试涉及到一个反应分子被嵌入一个有限和不规则大小的空腔的情况。构象约束改变了原本可以观察到的反应过程。有了这个奖项，有机和大分子化学项目继续支持威斯康星大学麦迪逊分校霍华德·e·齐默尔曼教授的研究。齐默尔曼教授的研究活动是在机械有机化学领域，这涉及到在各种条件下对化学反应进行近距离观察，以便准确地确定它们是如何发生的。既然不能直接观察分子的反应，就必须设计出其他方法来推断这些事件。齐默尔曼教授的实验室特别强调由光的吸收和被困在晶体中的分子引起的反应。