ダウンロード数: 372
このアイテムのファイル:
ファイル | 記述 | サイズ | フォーマット | |
---|---|---|---|---|
j.jfluchem.2013.02.004.pdf | 333.23 kB | Adobe PDF | 見る/開く |
タイトル: | Effects of the polyfluoroalkyl side-chain on the properties of 1-methyl-3-polyfluoroalkylimidazolium fluorohydrogenate ionic liquids |
著者: | Taniki, Ryosuke Kenmochi, Naoki Matsumoto, Kazuhiko https://orcid.org/0000-0002-0770-9210 (unconfirmed) Hagiwara, Rika https://orcid.org/0000-0002-7234-3980 (unconfirmed) |
著者名の別形: | 松本, 一彦 |
キーワード: | Ionic liquid Imidazolium Fluorohydrogenate Polyfluoroalkyl Liquid crystal |
発行日: | May-2013 |
出版者: | Elsevier B.V. |
誌名: | Journal of Fluorine Chemistry |
巻: | 149 |
開始ページ: | 112 |
終了ページ: | 118 |
抄録: | A series of 1-methyl-3-polyfluoroalkylimidazolium fluorohydrogenate salts (C_[3F3]MIm(FH)_[1.7]F, C_[4F5]MIm(FH)_[1.7]F, C_[6F9]MIm(FH)_[1.8]F, C_[8F13]MIm(FH)_[2.0]F, and C_[10F17]MIm(FH)_[2.0]F; the subscript numbers denote the number of carbon and fluorine atoms in the side-chain, respectively, with which the two carbon atoms from the root of the side-chain are not fluorinated) were synthesized and their physicochemical properties, including decomposition temperature, phase transition temperature, density, viscosity, ionic conductivity, and electrochemical stability, were measured. The three salts with relatively short side-chain have melting points below room temperature: C_[3F3]MIm(FH)_[1.7]F (Tm: 274 K), C_[4F5]MIm(FH)_[1.7]F (Tg: 186 K), and C_[6F9]MIm(FH)_[1.8]F (Tm: 276 K). The other salts, C_[8F13]MIm(FH)_[2.0]F and C_[10F17]MIm(FH)_[2.0]F, are in the crystal phase at room temperature. The obtained salts are miscible with water and hydrophobic fluorohydrogenate ionic liquids were not obtained in the present series. Introduction of fluorine atoms results in the increase in the density and viscosity, decrease in the ionic conductivity, and decrease in electrochemical stability against reduction. The liquid crystal phase was observed for C_[8F13]MIm(FH)_[2.0]F and C_[10F17]MIm(FH)_[2.0]F according to polarized optical microscopy and X-ray diffraction analysis. |
著作権等: | © 2013 Elsevier B.V. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/173338 |
DOI(出版社版): | 10.1016/j.jfluchem.2013.02.004 |
出現コレクション: | 学術雑誌掲載論文等 |
このリポジトリに保管されているアイテムはすべて著作権により保護されています。