Helium nanodroplet isolation spectroscopy in an undergraduate teaching laboratory
Helium nanodroplet isolation spectroscopy in an undergraduate teaching laboratory
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DOI：
10.1016/j.jms.2022.111676
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发表时间：
2022-07-26
影响因子：
1.4
通讯作者：
Raston，Paul L.
中科院分区：
文献类型：
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作者：
Raston，Paul L.
一个自制的氦纳米液滴分离光谱仪已被本科生在课程为基础的实验，以调查小分子的振转动力学。氦纳米液滴是一种通用的介质，由于其低温（0.4 K）和弱相互作用的性质，简化了嵌入分子的光谱学。在红外光谱区域，这通常会导致少量的旋转分辨线，可以在几个实验室周期内观察和分析。我们证明了使用这种成熟的技术在高层次的本科化学课程的氦solvated 13 C-标记的甲酸的激光光谱的优势进行了调查的第一次。
A home-built helium nanodroplet isolation spectrometer has been utilized by undergraduate students in course-based experiments to investigate the rovibrational dynamics of small molecules. Helium nanodroplets are a versatile medium that simplifies the spectroscopy of embedded molecules owing to their low temperature (0.4 K) and weakly interacting nature. In the infrared spectral region, this often results in a small number of rotationally resolved lines that can be observed and analyzed within several lab periods. We demonstrate the advantages of using this well-established technique in an upper-level undergraduate chemistry course for which the laser spectroscopy of helium solvated13C-labelled formic acid was investigated for the first time.