Upgrade of a Picosecond UV-vis-NIR Pump-Probe Transient Absorption Spectrometer

罗彻斯特大学化学系将利用化学研究仪器和设施（CRIF）项目获得的这份合同，升级皮秒紫外-可见-近红外泵浦探针瞬态吸收光谱仪。该设备将加强以下领域的研究：1)量子放大异构化；2) 14族阳离子自由基反应机理研究；3)共轭聚合物中光生链间物质的性质和衰变动力学；4)离子自由基对衰变动力学，确定返回电子转移速率常数；5)铂二亚胺配合物中电荷转移过程的研究；6)碳纳米管电子学与界面振动动力学。皮秒激光器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性质的理解取得突破。这些研究将对包括聚合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 the University of Rochester will upgrade a picosecond UV-vis-NIR pump-probe transient absorption spectrometer. This equipment will enhance research in the following areas: 1) quantum amplified isomerization; 2) mechanistic investigations of group 14 cation radical reactions; 3) nature and decay dynamics of photogenerated interchain species in conjugated polymers; 4) decay kinetics of ion radical pairs to determine return electron transfer rate constants; 5) studies of charge transfer processes in platinum diimine complexes; and 6) carbon nanotube electronics and interface vibrational dynamics.A picosecond 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.