Femtosecond time resolved IR spectrometer

我们的团队在时间分辨光谱的基态，还原态，氧化态和/或激发态性质的研究方面有丰富的经验。其中，飞秒瞬态吸收泵浦探测实验与可调的激发波长和检测范围，从400到1600 nm的跨度是在我们的调查的最前沿。然而，深入了解所研究的化合物的详细结构方面只能从电子吸收和发射光谱获得有限的扩展。因此，我们申请资金，以装备我们的飞秒激光系统与飞秒时间分辨红外光谱仪。这款宽带中红外（2-13 μm）泵浦-探测飞秒瞬态吸收光谱仪能够在光激发下采集红外光谱和动力学数据。具有高光谱（约5波数）和时间（约150 fs）分辨率的时间分辨振动光谱学将非常有助于更详细地研究电子激发态、电荷转移态、电荷分离态等的产生和命运。特别是当无机金属配合物或分子与红外活性官能团的研究，其中的振动光谱显着改变的结构和金属离子的电子构型，飞秒时间分辨红外光谱仪构成了一个有意义的和非常有用的补充，我们已经存在的时间分辨光谱技术。

Our group has ample experience in the investigations of ground-, reduced-, oxidized- and / or excited-state properties with time-resolved spectroscopy. Among others, fs transient absorption pump-probe experiments with tuneable excitation wavelengths and detection ranges that span from 400 to 1600 nm are at the forefront of our investigations. However, insight into detailed structural aspects of the investigated compounds can only be obtained to a limited extend from electronic absorption and emission spectra. Therefore, we apply for funding to equip our femtosecond laser system with a fs time resolved IR spectrometer. This broadband mid-infrared (2-13 μm) pump-probe femtosecond Transient Absorption Spectrometer enables the acquisition of IR spectral and kinetic data upon photoexcitation. Time resolved vibrational spectroscopy with high spectral (about 5 wavenumbers) and temporal (about 150 fs) resolution will be extremely helpful in studying the generation and fate of electronically excited states, charge transfer states, charge separated states etc. in more detail. Especially when inorganic metal complexes or molecules with IR active functional groups are investigated, where the vibrational spectra change significantly with the structure and with the electronic configuration of the metal ion, a fs time resolved IR spectrometer constitutes a meaningful and very helpful complement to our already existing time resolved spectroscopic techniques.