Fluorescence Probing of Solvent Cage Reaction (Quenching) Dynamics Under Reaction-Limited Conditions

反应限制条件下溶剂笼反应（猝灭）动力学的荧光探测

• 批准号: 8703214
• 负责人: Brian Stevens
• 金额: $ 12万
• 依托单位: University of South Florida
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-15 至 1990-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8703214&HistoricalAwards=false
• 关键词: Fluorescence; Probing; Solvent; Cage; Reaction

Professor Stevens will carry out detailed experimental measurements of fluorescence in liquids. These studies will require the acquisition and development of modern equipment to carry out the kinetic studies in a competitive manner. From the temperature dependence of measurable parameters, information on the nature of the various complexes that occur may be extracted from the experimental data. This approach has the possibility of distinguishing subtle, but possibly very commonly occurring, differences between bimolecular associates in liquids. The results may lead to a reexamination of concepts such as encounter complex, collision complex and exciplex. These types of experiments begin to probe a long standing problem of the true rate of quenching, once an excited state has been quenched diffusionally. An important component of this experimental program is not only the acquisition of state-of-the-art equipment for fluorescence measurements, but also the involvement of a very good undergraduate. At least two undergraduates will be involved in this work over the next two years and these students will have experiences comparable to those other students supported in the "Research Experiences for Undergraduates" activity.

史蒂文斯教授将对液体中荧光进行详细的实验测量。 这些研究将需要采购和开发现代设备，以竞争方式进行动力学研究。 根据可测量参数的温度依赖性，可以从实验数据中提取有关发生各种复合物的性质的信息。 这种方法有可能区分微妙但可能非常常见的是液体中双分子伴侣之间的差异。 结果可能会导致对诸如遇到复杂，碰撞复合物和动力等概念的重新审查。 一旦激发状态被扩散，这些类型的实验开始探究真实淬火率的长期问题。 该实验程序的一个重要组成部分不仅是获取用于荧光测量的最先进设备，而且还涉及非常好的本科生的参与。 在接下来的两年中，至少有两名本科生将参与这项工作，这些学生将获得与在“本科生研究经历”活动中获得支持的其他学生相当的经验。