New class of ionic liquids synthesized from amino acid and other bio-derived materials

I&EC 219

Hiroyuki Ohno, ohnoh@cc.tuat.ac.jp, Kenta Fukumoto, kenchan@cc.tuat.ac.jp, and Junko Kagimoto, y5641207@gc.tuat.ac.jp. Department of Biotechnology, Tokyo University of Agriculture & Technology, 2-24-16 Nakacho, Koganei, Tokyo, 184-8588, Japan
We have been synthesized new series of ionic liquids from bio-related compounds. Amino acid ionic liquids (AAILs), having amino acid as anions, enable us to study the effect of functional group on the properties of the ionic liquids. We have already reported imidazolium based AAILs. We discussed the effect of side chain structure on the physico-chemical properties such as glass transition temperature, ionic conductivity and polarity. Additionally, we studied binary mixture systems of these AAILs to control the properties of ionic liquids. A few mixed systems showed dramatic increase in the polarity. Furthermore, we are preparing new ionic liquids composed of both natural cation and anion such as choline alanine, etc. Toxicity of these natural ionic liquids has been studied. And we have already confirmed that these AAILs keep their chirality.