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

俄亥俄州立大学化学系将从化学研究仪器和设施计划(CRIF)获得这一奖项，以获得超快紫外线/可见光(UV/VIS)和红外瞬时吸收测量的仪器。该系统基于飞秒、可再生放大的钛宝石激光系统，与UV/VIS和红外探测系统相结合。该仪器将用于研究各种化学体系，包括a)有机金属化合物、硝烯、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；以及d)电荷转移态对DNA的光裂解。飞秒激光提供超快的相干可见光或红外光脉冲，使研究人员能够获得关于快速发生的化学反应的重要信息。它的使用可能会使我们对活性和非活性分子的性质的理解有所突破。这些研究将对包括聚合物化学和生物化学在内的许多领域产生影响。

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.