Adsorption of 1-Decyl-3-methylimidazolium Bromide and Solvation Structure of Bromide at the Air/Water Interface

• ARATONO Makoto

  Department of Chemistry, Faculty of Sciences, Kyushu University

• SHIMAMOTO Kei

  Department of Chemistry, Faculty of Sciences, Kyushu University

• ONOHARA Asuka

  Department of Chemistry, Faculty of Sciences, Kyushu University

• MURAKAMI Daiki

  Department of Chemistry, Faculty of Sciences, Kyushu University

• TANIDA Hajime

  Experimental Facilities Division, Japan Synchrotron Radiation Research Institute

• WATANABE Iwao

  Department of Chemistry, Graduate School of Science, Osaka Prefecture University

• OZEKI Toru

  Department of Natural Sciences, Hyogo University of Teacher Education

• MATSUBARA Hiroki

  Department of Chemistry, Faculty of Sciences, Kyushu University

• TAKIUE Takanori

  Department of Chemistry, Faculty of Sciences, Kyushu University

抄録

The adsorbed film of 1-decyl-3-methylimidazolium bromide (DeMIMB) at the air/water interface was investigated employing the surface tension measurement and the x-ray absorption fine structure method under the total reflection condition (TRXAFS). From the surface tension measurement, the surface excess concentrations of ions were determined. From the XAFS measurement, two solvation states of bromide ion were found in the adsorbed film, which were assigned to be “free-Br” and “bound-Br”. The hydration number of the former was estimated to be 6 while that of the latter was estimated to be 4. The results based on the XAFS analysis provided significant information on the formation of domains in the adsorbed film; the most conceivable situation is that the adsorbed molecules are definitely not homogeneously dispersed, but domains (islands or clusters) are dispersed in the adsorbed film. A regular and rather tight stacking of immidazolium rings may be formed in the domains.

収録刊行物

• Analytical Sciences

  Analytical Sciences 24 (10), 1279-1283, 2008

  社団法人 日本分析化学会

キーワード

• Analytical Chemistry

詳細情報

• CRID: 1390001204257702528
• NII論文ID: 10025207146
• NII書誌ID: AA10500785
• DOI: 10.2116/analsci.24.1279
• ISSN: 13482246
• ISSN: 09106340
• NDL書誌ID: 9667284
• Web Site: http://id.ndl.go.jp/bib/9667284
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9667284
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.24.1279.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.24.1279/fulltext.html
• Web Site: http://www.jstage.jst.go.jp/article/analsci/24/10/24_10_1279/_pdf
• 本文言語コード: en
• データソース種別:
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