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Ultrafast Dynamics in Aromatic Cation Based Ionic Liquids: A Femtosecond Raman-Induced Kerr Effect Spectroscopic Study
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- Shirota Hideaki
- Department of Nanomaterial Science, Graduate School of Advanced Integration Science, Chiba University Department of Chemistry, Faculty of Science, Chiba University
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- Kakinuma Shohei
- Department of Nanomaterial Science, Graduate School of Advanced Integration Science, Chiba University
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- Takahashi Kotaro
- Department of Nanomaterial Science, Graduate School of Advanced Integration Science, Chiba University
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- Tago Akito
- Department of Nanomaterial Science, Graduate School of Advanced Integration Science, Chiba University
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- Jeong Hocheon
- Department of Chemistry, Faculty of Science, Chiba University
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- Fujisawa Tomotsumi
- Department of Chemistry and Applied Chemistry, Graduate School of Science and Engineering, Saga University
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Description
<p>We studied the ultrafast dynamics of 40 aromatic cation based ionic liquids (ILs) by means of femtosecond Raman-induced Kerr effect spectroscopy. The low-frequency Kerr spectra (ca. 0.3–700 cm−1) of the ILs were obtained from the Kerr transients by Fourier-transform deconvolution analysis. The low-frequency Kerr spectra in the frequency range less than 200 cm−1 coming mainly from the intermolecular vibrations for the ILs were discussed in terms of (i) anion dependence, (ii) imidazolium cations vs. pyridinium cations, (iii) alkyl group dependence, and (iv) effect of methylation in aromatic cations. Several liquid properties, such as density, viscosity, electrical conductivity, and surface tension, of the present sample ILs at 293 K were also estimated in this study. We clarified that the aromatic cation based ILs show a different relation of the first moment of the low-frequency spectral band to the bulk liquid parameter, which is the square root of surface tension divided by liquid density, from aprotic molecular liquids. The slope of the first moment to the bulk parameter for the aromatic cation based ILs is gentler than that for aprotic molecular liquids.</p>
Journal
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- Bulletin of the Chemical Society of Japan
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Bulletin of the Chemical Society of Japan 89 (9), 1106-1128, 2016
The Chemical Society of Japan
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Details 詳細情報について
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- CRID
- 1390282679118783744
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- NII Article ID
- 130006770695
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- NII Book ID
- AA00580132
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- ISSN
- 13480634
- 00092673
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- NDL BIB ID
- 027601658
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE
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- Abstract License Flag
- Disallowed
