Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Fluorescence Excitation Spectroscopy of Octatetraene-Xe van der Waals Clusters

  • Kim, Taek-Soo (Department of Chemistry, Inha University) ;
  • Choi, Kyo-Won (Department of Chemistry, Inha University) ;
  • Kim, Sang-Kyu (Department of Chemistry, Inha University) ;
  • Choi, Young-S. (Department of Chemistry, Inha University) ;
  • Park, Sung-Woo (School of Environmental Science and Applied Chemistry, Kyunghee University) ;
  • Ahn, Doo-Sik (School of Environmental Science and Applied Chemistry, Kyunghee University) ;
  • Lee, Sung-Yul (School of Environmental Science and Applied Chemistry, Kyunghee University) ;
  • Yoshihara, Keitaro (Institute for Molecular Science)
  • Published : 2002.02.20
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Abstract

Fluorescence excitation spectrum of the trans.trans-1,3,5,7-octatetraene(OT)-Xe van der Waals clusters formed in supersonic jet expansions has been obtained. The transition lines corresponding to the van der Waals cluters of OT with Xe are observed in the lower frequency side of the OT band origin. Based on the spectral shifts, fluorescence lifetimes, and concentration dependence of the peak intensities, most of the transition lines are assigned to the $OT-Xe_n$ (n = 1, 2, 3, 4) clusters. Long progressions of a van der Waals vibrational mode are observed for n = 1, 2, 3 and 4 clusters and assigned to rocking of the OT moiety with respect to the Xe atom with the help of ab initio quantum mechanical calculation.

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References

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