Mode-selective vibrational redistribution after spectrally selective N-H stretching mode excitation in intermolecular hydrogen bonds.
作者： V. Kozich , J. Dreyer , W. Werncke
DOI: 10.1063/1.3062809
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摘要: Mode-selective vibrational redistribution after spectrally selective excitation within the highly structured N–H stretching band of 7-azaindole dimer was observed by subpicosecond infrared-pump/anti-Stokes Raman-probe spectroscopy. Measurements relaxation vibration indicate ultrafast initial population transfer to vibrations with pronounced bending character. From these modes energy is transferred frequencies below 1000 cm−1 on a slower time scale about 3 ps. Tuning narrow infrared different substructures influences distribution populations between fingerprint modes. Their relative are correlated contributions forming coupled combination tones band. These results provide experimental support Fermi resonance model previously used for simulations absorption shape and insight int...
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