Russian Journal of Biological Physics and Chemisrty Russian Journal of Biological Physics and Chemisrty АКТУАЛЬНЫЕ ВОПРОСЫ БИОЛОГИЧЕСКОЙ ФИЗИКИ И ХИМИИ 2499-9962 54093 БИООРГАНИЧЕСКАЯ, БИОФИЗИЧЕСКАЯ И МЕДИЦИНСКАЯ ХИМИЯ BIOORGANIC, BIOPHYSICAL AND MEDICINAL CHEMISTRY БИООРГАНИЧЕСКАЯ, БИОФИЗИЧЕСКАЯ И МЕДИЦИНСКАЯ ХИМИЯ L-PROLINE BASED ALKYLMETHYLIMIDAZOLIUM IONIC LIQUIDS [Cnmim][Pro]: SYNTHESIS AND SOME PHYSICOCHEMICAL PROPERTIES OF THEIR AQUEOUS SOLUTIONS L-PROLINE BASED ALKYLMETHYLIMIDAZOLIUM IONIC LIQUIDS [Cnmim][Pro]: SYNTHESIS AND SOME PHYSICOCHEMICAL PROPERTIES OF THEIR AQUEOUS SOLUTIONS Alopina E V Alopina E V alopina@mail.ru Dobryakov Yu G Dobryakov Yu G Safonova E A Safonova E A Smirnova N A Smirnova N A St. Petersburg State University ru St. Petersburg State University ru St. Petersburg State University ru St. Petersburg State University ru St. Petersburg State University ru St. Petersburg State University ru St. Petersburg State University ru St. Petersburg State University ru 25 12 2016 25 12 2016 1 2 173 175 20 12 2016 20 12 2016 https://rusjbpc.ru/en/nauka/article/54093/view

A modification of synthesis of amino acid ionic liquids (AAILs) based on 1-alkyl-3-methylimidazolium cation and L-prolinate anion [Cnmim][Pro] (n = 4, 8, 12) was developed. The structures of the AAILs based on prolinate were confirmed by 1H NMR and 13C NMR spectroscopies. Densities and refractive indices of aqueous solutions of these AAILs in the concentration range 0-97 wt % (weight percents) were measured at temperature 298.15 K. It has been found that in the field of high AAIL concentrations the dependence of the density value on the AAIL mole fraction for binary water + [Cnmim][Pro] solutions is nonlinear.

A modification of synthesis of amino acid ionic liquids (AAILs) based on 1-alkyl-3-methylimidazolium cation and L-prolinate anion [Cnmim][Pro] (n = 4, 8, 12) was developed. The structures of the AAILs based on prolinate were confirmed by 1H NMR and 13C NMR spectroscopies. Densities and refractive indices of aqueous solutions of these AAILs in the concentration range 0-97 wt % (weight percents) were measured at temperature 298.15 K. It has been found that in the field of high AAIL concentrations the dependence of the density value on the AAIL mole fraction for binary water + [Cnmim][Pro] solutions is nonlinear.

 ionic liquid 1-alkyl-3-methylimidazolium cation amino acid ionic liquid L-proline density refractive index ionic liquid 1-alkyl-3-methylimidazolium cation amino acid ionic liquid L-proline density refractive index

Pham T.P.T., Cho C.-W., Yun Y.-S. Environmental fate and toxicity of ionic liquids: a review. Water Res., 2010, vol. 44, pp. 352-372. Pham T.P.T., Cho C.-W., Yun Y.-S. Environmental fate and toxicity of ionic liquids: a review. Water Res., 2010, vol. 44, pp. 352-372. Zhu S., Chen R., Wu Y., Chen Q., Zhang X., Yu Z. A mini-review on greenness of ionic liquids. Chem. Biochem. Eng. Q., 2009, vol. 23, pp. 207-211. Zhu S., Chen R., Wu Y., Chen Q., Zhang X., Yu Z. A mini-review on greenness of ionic liquids. Chem. Biochem. Eng. Q., 2009, vol. 23, pp. 207-211. Gulhane P.A., Gomashe A.V., Deo N.V. Influence of ionic liquid 1-butyl-3-methylmidazolium chloride on the soil micro-ecological system. Int. J. Curr. Microbiol. Appl. Sci., 2014, vol. 3, pp. 805-813. Gulhane P.A., Gomashe A.V., Deo N.V. Influence of ionic liquid 1-butyl-3-methylmidazolium chloride on the soil micro-ecological system. Int. J. Curr. Microbiol. Appl. Sci., 2014, vol. 3, pp. 805-813. Tao G. H., He L., Liu W.S., Xu L., Xiong W., Wang T., Kou Y. Preparation, characterization and application of amino acid-based green ionic liquids. Green Chem., 2006, vol. 8, pp. 639-646. Tao G. H., He L., Liu W.S., Xu L., Xiong W., Wang T., Kou Y. Preparation, characterization and application of amino acid-based green ionic liquids. Green Chem., 2006, vol. 8, pp. 639-646. Gathergood N., Garcia M.T., Scammells P.J. Biodegradable ionic liquids: Part I. Concept, preliminary targets and evaluation. Green Chem., 2004, vol. 6, pp. 166-175. Gathergood N., Garcia M.T., Scammells P.J. Biodegradable ionic liquids: Part I. Concept, preliminary targets and evaluation. Green Chem., 2004, vol. 6, pp. 166-175. Smirnova N.A., Safonova E.A. Ionic liquids such as active surfactants. Russ. J. Phys. Chem. A, 2010, vol. 84, no. 10, pp. 1-11. (In Russ.) Smirnova N.A., Safonova E.A. Ionic liquids such as active surfactants. Russ. J. Phys. Chem. A, 2010, vol. 84, no. 10, pp. 1-11. (In Russ.) Fukumoto K., Yoshizawa M., Ohno H. Room temperature ionic liquid from 20 natural amino acids. J. Am. Chem. Soc., 2005, vol. 127, pp. 2398-2399. Fukumoto K., Yoshizawa M., Ohno H. Room temperature ionic liquid from 20 natural amino acids. J. Am. Chem. Soc., 2005, vol. 127, pp. 2398-2399. Lopp M., Boroznyak R. V. Synthesis of 1-butyl-3-methylimidazolium hydroxide and glutamate: Modification of Fukumoto’ Method. Zhurnal nauchnyh publikacij aspirantov i doktorantov, 2011, vol. 11, pp. 1-10 (in Russ.) Lopp M., Boroznyak R. V. Synthesis of 1-butyl-3-methylimidazolium hydroxide and glutamate: Modification of Fukumoto’ Method. Zhurnal nauchnyh publikacij aspirantov i doktorantov, 2011, vol. 11, pp. 1-10 (in Russ.) Alopina E., Safonova E., Pukinsky I., Smirnova N. Liquid-liquid equilibria in aqueous mixtures of alkylmethylimidazolium glutamate with potassium carbonate and some physicochemical properties of aqueous [Cnmim][Glu] (n = 4, 6, 8) solutions. J. Chem. Eng. Data, 2016, in Press. Alopina E., Safonova E., Pukinsky I., Smirnova N. Liquid-liquid equilibria in aqueous mixtures of alkylmethylimidazolium glutamate with potassium carbonate and some physicochemical properties of aqueous [Cnmim][Glu] (n = 4, 6, 8) solutions. J. Chem. Eng. Data, 2016, in Press. Dobryakov Y., Tuma D., Maurer G. Activity Coefficients at Infinite Dilution of Alkanols in the Ionic Liquids 1-Butyl-3-methylimidazolium Hexafluorophosphate, 1-Butyl-3-methylimidazolium Methyl Sulfate, and 1-Hexyl-3- methylimidazolium Bis(trifluoromethylsulfonyl) Amide Using the Dilutor Technique. J. Chem. Eng. Data, 2008, vol. 53, pp. 2154-2162. Dobryakov Y., Tuma D., Maurer G. Activity Coefficients at Infinite Dilution of Alkanols in the Ionic Liquids 1-Butyl-3-methylimidazolium Hexafluorophosphate, 1-Butyl-3-methylimidazolium Methyl Sulfate, and 1-Hexyl-3- methylimidazolium Bis(trifluoromethylsulfonyl) Amide Using the Dilutor Technique. J. Chem. Eng. Data, 2008, vol. 53, pp. 2154-2162. Ghanem Ou. B., Mutalib M. I. A., Lévêque J.-M., Gonfa G., Kait C., El-Harbawi M. Studies on the Physicochemical Properties of Ionic Liquids Based On 1-Octyl-3-methylimidazolium Amino Acids. J. Chem. Eng. Data, 2015, vol. 60, pp. 1756-1763. Ghanem Ou. B., Mutalib M. I. A., Lévêque J.-M., Gonfa G., Kait C., El-Harbawi M. Studies on the Physicochemical Properties of Ionic Liquids Based On 1-Octyl-3-methylimidazolium Amino Acids. J. Chem. Eng. Data, 2015, vol. 60, pp. 1756-1763.