Vibrational dynamics of nitromethane mixed with IR780 dye studied by coherent anti-stokes Raman spectroscopy
Vibrational dynamics of nitromethane mixed with IR780 dye studied by coherent anti-stokes Raman spectroscopy
复制标题
通过相干反斯托克斯拉曼光谱研究硝基甲烷与 IR780 染料混合的振动动力学
DOI:
10.1002/jrs.4955
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发表时间:
2016-10
影响因子:
2.5
通讯作者:
Yanqiang Yang
中科院分区:
文献类型:
--
作者:
Honglin Wu;Yunfei Song;Guoyang Yu;Xuanlin Chen;Yanqiang Yang
Vibrational coupling between different kinds of molecules in liquid mixture is studied by multiplex coherent anti-Stokes Raman spectroscopy (CARS). To identify vibrational coherence, fs-probe with high time resolution and narrowband-probe with high spectral resolution are adopted in CARS experiments. Using liquid nitromethane (NM) mixed with organic dye IR780 perchlorate as the sample, we can clearly observe the interference between different vibrational modes. The intermolecular vibrational interaction between NM and IR780 molecules results in the vibrational coherence transfer (VCT) in the form of a change of phase correlation. Compared with symmetric bending vibration of NO2, coherence transfer is found to be easier to take place between C―N bond of NM and vibrations of IR780, which indicates the selectivity of intermolecular vibrational interaction. The selectivity is deduced to be related to the coordination between intramolecular and collective motion of molecules. Copyright © 2016 John Wiley & Sons, Ltd.
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DOI:
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发表时间:
2007-04
期刊:
The Journal of chemical physics
影响因子:
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