NSF Young Investigator/Time Domain Study of Chemical Reaction Dynamics in Condensed Media

9357424 Scherer美国宾夕法尼亚大学的Norbert Scherer将利用时域光谱技术研究溶剂在致密介质和界面中化学反应动力学中的作用，这是美国国家科学基金化学学部实验物理化学计划的青年研究员项目。新的溶剂选择性光学和远红外（FIR）时域技术将在分子水平上阐明溶剂参与液体、超临界流体、玻璃和生物介质中的化学反应。扫描隧道显微镜将与飞秒多脉冲技术结合使用，用于界面化学过程的原子特异性检测。通过在这个研究项目下进行的实验结果，Scherer将在微观层面上更好地理解分子如何在液体和流体介质中以及在界面上碰撞、交换能量和进行化学反应。从这些研究中获得的信息和更广阔的视角有可能在原子水平上直接观察和控制化学过程。这反过来又对诸如纳米级材料制造和有毒废物销毁等不同领域产生影响。＊＊＊

9357424 Scherer In this National Science Foundation Young Investigator project in the Experimental Physical Chemistry Program of the Chemistry Division, Norbert Scherer of the University of Pennsylvania will use time-domain spectroscopic techniques to study the role of solvents on chemical reaction dynamics in dense media and at interfaces. New solvent-selective optical and far-infrared (FIR) time-domain techniques will be developed to elucidate solvent involvement in chemical reactions on a molecular level in liquid, supercritical fluid, glass, and biological media. Scanning tunneling microscopy will be used in combination with femtosecond multiple-pulse techniques for the atomic specific detection of chemical processes at interfaces. %%% Through the results of experiments conducted under this research program Scherer will obtain a better understanding on a microscopic level of how molecules collide, exchange energy, and undergo chemical reaction in liquid and fluid media and at interfaces. The information and broader perspective obtained from these studies have the potential for directly observing and controlling chemical processes at the atomic level. This in turn has implications in such diverse areas as nanoscale fabrication of materials and destruction of toxic wastes. ***