Experimental Studies of Friction and Nuclear Motion in Electron Tunneling in Supermolecules

超分子电子隧道摩擦和核运动的实验研究

• 批准号: 0415457
• 负责人: David Waldeck
• 金额: $ 46.13万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0415457&HistoricalAwards=false
• 关键词: Experimental; Studies; Friction; Nuclear; Motion

Professor David H. Waldeck, of the Department of Chemistry at the University of Pittsburgh, is supported by the Organic and Macromolecular Chemistry Program for his studies of electron transfer in supramolecular systems. The current project examines an aspect of electron transfer reactions involving both electron displacement and the displacements of atoms. Professor Waldeck will test the most common assumption, or hypothesis, that the reaction rate is controlled by either the electron's movement or the movement of the atoms. The proposed studies will test this hypothesis and develop our understanding of how electron transfer reactions evolve between these two limiting cases. This work is in an exceptionally important area since electron transfer impacts all areas of chemistry, physics and biology. With the support of the Organic and Macromolecular Chemistry Program, Professor David H. Waldeck, of the Department of Chemistry at the University of Pittsburgh, will build upon the success of his on-going NSF-sponsored research into the factors that control the kinetics of electron transfer-at-a-distance. In particular, the roles of solvent dynamics, and of intervening groups that are not covalently bonded to the donor or acceptor centers, are to be examined. These are hot topics in the electron transfer field at present, and Dr. Waldeck's research has excellent potential to make a significant contribution to our understanding of the electron transfer phenomenon, particularly in biological systems. The results of this work will be communicated through scientific conferences and publications. Student training is an essential element of this research program with particular emphasis being placed on attracting students from underrepresented groups. Both graduate and undergraduate students will be trained in modern laser methods, spectroscopy, and nanotechnology.

大卫教授H.匹兹堡大学化学系的沃尔德克因其对超分子体系中电子转移的研究而得到有机和大分子化学项目的支持。目前的项目研究电子转移反应的一个方面，涉及电子位移和原子的位移。沃尔德克教授将测试最常见的假设或假说，即反应速率是由电子的运动或原子的运动控制的。拟议的研究将测试这一假设，并发展我们的理解如何电子转移反应之间的演变这两个极限情况。这项工作是在一个非常重要的领域，因为电子转移影响化学，物理和生物学的所有领域。在有机和高分子化学项目的支持下，大卫H.匹兹堡大学化学系的沃尔德克将在他正在进行的NSF赞助的研究的基础上，对控制电子远距离转移动力学的因素进行研究。特别是，溶剂动力学的作用，和不共价键合到供体或受体中心的干预基团，将被检查。这些都是目前电子转移领域的热门话题，沃尔德克博士的研究具有很好的潜力，可以为我们理解电子转移现象做出重大贡献，特别是在生物系统中。这项工作的结果将通过科学会议和出版物传播。学生培训是这项研究计划的一个重要组成部分，特别强调吸引来自代表性不足群体的学生。研究生和本科生都将接受现代激光方法，光谱学和纳米技术的培训。