Purchase of Instrumentation for Ultrafast UV/Vis and Infrared Transient Absorption Measurements

购买超快紫外/可见光和红外瞬态吸收测量仪器

• 批准号: 0234684
• 负责人: Terry Gustafson
• 金额: $ 37.5万
• 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: 2003
• 资助国家: 美国
• 起止时间: 2003-04-15 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0234684&HistoricalAwards=false
• 关键词: Purchase; Instrumentation; Ultrafast; UV; Vis

With this award from the Chemistry Research Instrumentation and Facilities (CRIF) Program, the Department of Chemistry at Ohio State University will acquire instrumentation for ultrafast ultraviolet/visible (UV/Vis) and infrared transient absorption measurements. The system is based on a femtosecond, regeneratively amplified Ti:Sapphire laser system, in conjunction with UV/Vis and infrared detection systems. The instrumentation will be used to study a variety of chemical systems, including a) important intermediates in the photophysics and photochemistry of organometallic compounds, nitrenes, carbenes and flavins; b) charge carrier relaxation in electroluminescent conducting polymers; c) the role of hydrogen bonding in the vibrational cooling of nucleic acids; and d) the photocleavage of DNA by charge transfer states.A femtosecond laser provides ultrafast pulses of coherent visible or infrared light, which enables researchers to obtain important information about fast occurring chemical reactions. Its use may enable breakthroughs in our understanding of the properties of reactive and nonreactive molecules. These studies will have an impact in a number of areas including polymer chemistry and biochemistry.

凭借化学研究仪器和设施 (CRIF) 计划的这一奖项，俄亥俄州立大学化学系将获得用于超快紫外/可见光 (UV/Vis) 和红外瞬态吸收测量的仪器。该系统基于飞秒再生放大钛蓝宝石激光系统，并结合紫外/可见光和红外检测系统。 该仪器将用于研究各种化学系统，包括a）有机金属化合物、氮烯、卡宾和黄素的光物理和光化学中的重要中间体； b) 电致发光导电聚合物中的载流子弛豫； c) 氢键在核酸振动冷却中的作用； d) 通过电荷转移态对 DNA 进行光裂解。飞秒激光提供相干可见光或红外光的超快脉冲，使研究人员能够获得有关快速发生的化学反应的重要信息。它的使用可能使我们对反应性和非反应性分子特性的理解取得突破。这些研究将对包括高分子化学和生物化学在内的许多领域产生影响。