权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Femtosecond time resolved IR spectrometer

飞秒时间分辨红外光谱仪

基本信息

批准号：
403630165
负责人：
金额：
--
依托单位：
Friedrich-Alexander-Universität Erlangen-Nürnberg
依托单位国家：
德国
项目类别：
Major Research Instrumentation
财政年份：
2018
资助国家：
德国
起止时间：
2017-12-31 至无数据
项目状态：
未结题

来源：
https://gepris.dfg.de/gepris/projekt/403630165?language=en
关键词：
Femtosecond time resolved IR spectrometer

项目摘要

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.

我们的团队在基态、还原态、氧化态和/或激发态性质的时间分辨光谱研究方面有丰富的经验。其中，具有可调谐激发波长和检测范围从400到1600 nm的瞬态吸收泵浦探针实验是我们研究的前沿。然而，对所研究化合物的详细结构方面的了解只能从电子吸收和发射光谱中得到有限的扩展。因此，我们申请资助为我们的飞秒激光系统配备一个fs时间分辨红外光谱仪。该宽带中红外（2-13 μm）泵浦探针飞秒瞬态吸收光谱仪能够在光激发下获取红外光谱和动力学数据。具有高光谱（约5个波数）和时间分辨率（约150秒）的时间分辨振动光谱学将对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有极大的帮助。特别是当研究具有红外活性官能团的无机金属配合物或分子时，其振动光谱随着金属离子的结构和电子构型的变化而发生显著变化，fs时间分辨红外光谱仪对我们现有的时间分辨光谱技术构成了有意义和非常有用的补充。