Subpicosecond UV-pump and IR-probe Spectroscopy of 9-Fluorenone in Deuterated Acetonitrile and Methanol

The vibrational dynamics of the CO stretching mode of 9-fluorenone (FL) in CD3CN and CD3OD were studied by sub-picosecond UV-pump and IR-probe spectroscopy. We found that the CO stretching band is blue-shifted by hydrogen-bond formation in the S1 state but red-shifted in the S0 state. In both CD3CN...

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Bibliographic Details
Published in:Chemistry letters 2010-09, Vol.39 (9), p.932-934
Main Authors: Hirai, Satori, Banno, Motohiro, Ohta, Kaoru, Palit, Dipak K, Tominaga, Keisuke
Format: Article
Language:English
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Summary:The vibrational dynamics of the CO stretching mode of 9-fluorenone (FL) in CD3CN and CD3OD were studied by sub-picosecond UV-pump and IR-probe spectroscopy. We found that the CO stretching band is blue-shifted by hydrogen-bond formation in the S1 state but red-shifted in the S0 state. In both CD3CN and CD3OD, the time evolution of the transient absorption spectrum was observed on a picosecond time scale, likely because of vibrational cooling and hydrogen-bond dynamics.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.2010.932