Solvation Structure of Metal Ions in Ionic Liquids under Electric Field

• Project/Area Number: 24750019
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry
• Research Institution: Saga University
• Principal Investigator: UMEKI TATSUYA 佐賀大学, 工学(系)研究科(研究院), 助教 (00384735)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: イオン液体 / NMR / 溶媒和構造 / ダイナミクス / リチウム電解液 / 化学シフト

Outline of Final Research Achievements

We studied solvation structure of Li+ in ionic liquid composed of Lewis-basic cation by NMR chemical shifts of various nuclei. In the ionic liquid solution, Li+ interacts with both cation and anion. Moreover, we determined longitudinal relaxation times and self-diffusion coefficients in the ionic liquid solutions. The dynamics of Li+ in the ionic liquid solutions were discussed in terms of interionic interactions.

Research Products

• [Journal Article] Role of Water in Complexation of 1,4,7,10,13,16-hexaoxacyclooctadecane (18-crown-6) with Li+ and K+ in 1-ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)amide Ionic Liquid (2014)
  • Author(s): T. Umecky, T. Takamuku, R. Kanzaki, M. Takagi, E. Kawai, T. Matsumoto, T. Funazukuri
  • Journal Title: Journal of Inclusion Phenomena and Macrocyclic Chemistry Volume: 80 Issue: 3-4 Pages: 401-407
  • DOI: 10.1007/s10847-014-0427-1
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Effects of Dissolved Water on Li+ Solvation in 1-Ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)amide Ionic Liquid Studied by NMR (2013)
  • Author(s): T. Umecky, T. Takamuku, T. Matsumoto, E. Kawai, M. Takagi, T. Funazukuri
  • Journal Title: Journal of Physical Chemistry B Volume: 117 Issue: 50 Pages: 16219-16226
  • DOI: 10.1021/jp409324k
  • Peer Reviewed
• [Presentation] 疎水性イオン液体中におけるLi+溶媒和構造と18-クラウン-6錯形成平衡に及ぼす水の影響 (2014)
  • Author(s): 梅木辰也
  • Organizer: 第3回錯体化学若手の会九州・沖縄支部勉強会
  • Place of Presentation: 福岡市
  • Year and Date: 2014-11-29
  • Invited
• [Presentation] Solvation of Li+ in Lewis-basic ionic liquid of 1-octyl-4-aza-1-azoniabicyclo[2.2.2]octane bis(trifluoromethanesulfonyl)amide (2014)
  • Author(s): T. Umecky, K. Suga, E. Masaki, T. Takamuku, T. Makino, M. Kanakubo
  • Organizer: EMLG/JMLG Annual Meeting 2014 “Molecular Liquids and Soft Matter: from Fundamentals to Applications”
  • Place of Presentation: Roma, Italy
  • Year and Date: 2014-09-07 – 2014-09-12
• [Presentation] 1-octyl-4-aza-1-azoniabicyclo[2.2.2]octane系および1-octyl-3-methylimidazolium系イオン液体中におけるリチウムイオンの溶媒和と拡散挙動 (2014)
  • Author(s): 正木瑛二、菅謙太、梅木辰也、高椋利幸、牧野貴至、金久保光央
  • Organizer: 第51回化学関連支部合同九州大会
  • Place of Presentation: 北九州市
  • Year and Date: 2014-06-28
• [Presentation] Water Concentration Dependences of NMR Longitudinal Relaxation Times and Self-diffusion Coefficients of Lithium Ion in Hydrophobic Ionic Liquid (2013)
  • Author(s): T. Umecky, T. Takamuku, M. Takagi, E. Kawai, T. Matsumoto, T. Funazukuri
  • Organizer: 33rd International Conference on Solution Chemistry
  • Place of Presentation: Ｋｙｏｔｏ， Ｊａｐａｎ
• [Presentation] Influence of Water Dissolution on Lithium Ion Solvation in 1-Ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)amide Ionic Liquid (2013)
  • Author(s): T. Umecky, T. Takamuku, M. Takagi, E. Kawai, T. Matsumoto, T. Funazukuri
  • Organizer: EMLG/JMLG Annual Meeting “Global Perspectives in the Structure and Dynamics in Liquids and Mixtures: Experiment and Simulation”
  • Place of Presentation: Ｌｉｌｌｅ， Ｆｒａｎｃｅ
  • Invited