Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, D-37077 Göttingen, Germany.
Phys Chem Chem Phys. 2013 Jul 14;15(26):10702-21. doi: 10.1039/c3cp51515j. Epub 2013 Jun 3.
The sensitivity limitations of Fourier transform infrared (FTIR) spectroscopy for the detection of molecular clusters formed in rarefied gas expansions can be overcome by synchronizing intense gas pulses at a low duty cycle with rapid interferometer scans. This turns the broadband FTIR approach into a universal cluster spectroscopy tool applicable from the far (200 cm(-1)) to the near (8000 cm(-1)) IR. It nicely complements more selective and more restricted laser-based techniques and it provides a gas-phase variant of the matrix-isolation method, the main drawback being substance consumption. A survey over the capabilities, limitations and perspectives of this high-throughput nozzle approach to cluster FTIR spectroscopy is given.
傅里叶变换红外（FTIR）光谱法在检测稀薄气体膨胀中形成的分子簇时，灵敏度有限，但是通过将强气体脉冲以低占空比同步，并快速进行干涉仪扫描，可以克服这一限制。这使得宽带 FTIR 方法成为一种通用的簇光谱工具，适用于从远（200cm(-1))到近（8000cm(-1))的红外区域。它很好地补充了更具选择性和更受限制的基于激光的技术，并且提供了一种气相基质隔离方法的变体，主要缺点是物质消耗。本文对这种高通量喷嘴方法在簇 FTIR 光谱学中的应用的能力、限制和前景进行了综述。
