CRIF:MU: Acquisition of Laser Instrumentation for Ultrafast Raman Measurements

CRIF:MU：收购用于超快拉曼测量的激光仪器

基本信息

批准号：
0840455
负责人：
Malcolm Chisholm
金额：
$ 47.26万
依托单位：
Ohio State University Research Foundation -DO NOT USE
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2009
资助国家：
美国
起止时间：
2009-02-01 至 2012-01-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0840455&HistoricalAwards=false
关键词：
CRIF MU Acquisition Laser Instrumentation

项目摘要

With support from the Chemistry Research Instrumentation and Facilities: Multiuser program (CRIF:MU), the Department of Chemistry at Ohio State University will acquire a femtosecond, regeneratively amplified Ti:Sapphire laser system, in conjunction with a multichannel detection system, to perform femtosecond stimulated Raman Spectroscopy experiments. The instrumentation will be used to provide understanding to several important problems in chemical science, including (a) how energy flows in the excited states of molecules, from the observed photophysical and photochemical properties of organometallic compounds, nitrenes, carbenes and DNA; (b) how to enhance charge injection and propagation processes in organometallic compounds for solar energy conversion; (c) how vibrational relaxation mediates ultrafast internal conversion of nucleic acids; and (d) what the molecular nature of the localized excited state is in systems used in the photocleavage of DNA by charge transfer states.Raman spectroscopy is a powerful tool for studying vibrational spectra in molecules and macromolecular systems such as DNA. The spectra will provide information on chemical bonding and the effect from the surrounding environment in these systems. Time resolved Raman spectroscopy allows the study of short lived photochemical species and excited states providing dynamical information on energy flow and relaxation as well. The laser Raman system in the Center for Chemical and Biophysical Dynamics at Ohio State will be used in research by undergraduates and graduate students and provide them training with state-of-the-art equipment.

在化学研究仪器和设施的支持下：多源计划（CRIF：MU），俄亥俄州立大学的化学系将与多元通道检测系统一起，获得spenersecond，再生放大的TI：SAPPHIRE LASER SYSTEM刺激的拉曼光谱实验。该仪器将用于对化学科学的几个重要问题提供理解，包括（a）分子激发态中的能量如何从观察到的有机金属化合物，硝酸盐，硝酸盐，碳烯和DNA的光物理和光化学特性中流动；（b）如何增强有机金属化合物中太阳能转化的电荷注入和传播过程；（c）振动弛豫如何介导核酸的超快内部转化；（d）通过电荷转移态在DNA中使用的系统中，局部激发态的分子性质是什么。Raman光谱是研究分子和大分子系统（例如DNA）中振动光谱的强大工具。这些光谱将提供有关化学键合的信息以及这些系统中周围环境的影响。时间解决的拉曼光谱允许研究短暂的光化学物种和激发态，从而提供有关能量流和放松的动态信息。俄亥俄州立大学化学与生物物理动力学中心的激光拉曼系统将由本科生和研究生的研究中使用，并为他们提供最先进的设备培训。