Reactions of solvated electrons with imidazolium cations in ionic liquids

被引：48

作者：

Takahashi, Kenji ^{[1
]}

Sato, Toshifumi ^{[2
]}

Katsumura, Yosuke ^{[3
]}

Yang, Jinfeng ^{[4
]}

Kondoh, Takafumi ^{[4
]}

Yoshida, Yoichi ^{[4
]}

Katoh, Ryuzi ^{[5
]}

机构：

[1] Kanazawa Univ, Div Mat Sci, Grad Sch Nat Sci & Technol, Kanazawa, Ishikawa 9201192, Japan

[2] Hokkaido Univ, Grad Sch Engn, Div Biotechnol & Macromol Chem, Sapporo, Hokkaido 0608628, Japan

[3] Univ Tokyo, Sch Engn, Dept Nucl Engn & Management, Bunkyo Ku, Tokyo 1138656, Japan

[4] Osaka Univ, Inst Sci & Ind Res, Osaka 5670047, Japan

[5] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058565, Japan

来源：

RADIATION PHYSICS AND CHEMISTRY | 2008年 / 77卷 / 10-12期

关键词：

pulse radiolysis; solvated electron; dry electron; alkylation;

D O I：

10.1016/j.radphyschem.2008.05.042

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We examined formation of solvated electrons in several ionic liquids composed of ammonium, pyrrolidinium and piperidinium cations by observing absorption spectra in the visible and near-infrared regions using pulse radiolysi. We also examined reactions of the solvated electrons with imidazolium cations in the ionic liquids. The reaction rate constants were an order of magnitude faster than the diffusion-limited rate calculated from the viscosity. The electrons before full solvation (dry electrons) reacted efficiently with the imidazolium cations. These observations suggest that the electrons in the ionic liquids can move easily before solvation. The scavenging of the dry electron by the imidazolium cation was also examined using C2-alkylated-imidazolium cations. It is found that the alkylation of imidazolium suppresses the reactivity with the dry electron. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1239 / 1243

页数：5

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