Abstract
The hydrogen-bonded (H-bonded) OH stretching vibrations in the electronic ground state of jet-cooled phenol-H(2)O, phenol-methanol, and phenol-NH(3) clusters have been measured with high-resolution double resonance spectroscopy using single-mode IR and UV lasers. All the observed H-bonded OH bands are homogeneously broadened, and the corresponding bandwidths are obtained by curve fitting the observed spectra to Lorentzian functions. In comparison with the result of time-resolved experiments [Phys. Chem. Chem. Phys. 9, 1170 (2007)], it is found that there is a quantitative correlation between the bandwidth and the vibrational frequency shift upon the complex formation. It seems that the observed phenomena can be explained by considering the potential coupling between the intramolecular and intermolecular vibrational modes.
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