Vibrational Cooling Process of S_1 trans-Stilbene in Ionic Liquids Observed with Picosecond Time-resolved Raman Spectroscopy

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著者

    • IWATA Koichi
    • Research Centre for Spectrochemistry, School of Science, The University of Tokyo
    • TAKADA Yuta
    • Department of Chemistry, School of Science, The University of Tokyo

抄録

Vibrational cooling rates in room temperature ionic liquids were measured with picosecond time-resolved Raman spectroscopy. The 1570-cm<SUP>−1</SUP> Raman band of the first excited singlet (S<SUB>1</SUB>) state of <I>trans</I>-stilbene was used as a "Raman thermometer." The recorded vibrational cooling rates in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (emimTf<SUB>2</SUB>N) and 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (bmimTf<SUB>2</SUB>N) were close to those in ordinary molecular solvents despite a large difference in thermal diffusivity. The result is consistent with the assumption that local structures are formed in the ionic liquids.

収録刊行物

  • Chemistry letters

    Chemistry letters 36(4), 504-505, 2007-04-05

    The Chemical Society of Japan

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各種コード

  • NII論文ID(NAID)
    10018880826
  • NII書誌ID(NCID)
    AA00603318
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    03667022
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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