Vibrational Cooling Process of S1  <i>trans</i>-Stilbene in Ionic Liquids Observed with Picosecond Time-resolved Raman Spectroscopy

• Koichi Iwata

  Research Centre for Spectrochemistry, School of Science, The University of Tokyo

• Kyousuke Yoshida

  Department of Chemistry, School of Science, The University of Tokyo

• Yuta Takada

  Department of Chemistry, School of Science, The University of Tokyo

• Hiro-o Hamaguchi

  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−1 Raman band of the first excited singlet (S1) state of trans-stilbene was used as a “Raman thermometer.” The recorded vibrational cooling rates in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (emimTf2N) and 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (bmimTf2N) 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, 2007-03-03

  Oxford University Press (OUP)

キーワード

• General Chemistry

詳細情報

• CRID: 1360002219111008000
• NII論文ID: 10018880826
• NII書誌ID: AA00603318
• DOI: 10.1246/cl.2007.504
• ISSN: 13480715
• ISSN: 03667022
• Web Site: https://academic.oup.com/chemlett/article-pdf/36/4/504/55594331/cl.2007.504.pdf
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