Protic Cationic Oligomeric Ionic Liquids of the Urethane Type

Research output: Contribution to journalJournal article – Annual report year: 2014Researchpeer-review

  • Author: Shevchenko, V.

    National Academy of Sciences of Ukraine, Ukraine

  • Author: Stryutsky, A. V.

    National Academy of Sciences of Ukraine, Ukraine

  • Author: Klymenko, N. S.

    National Academy of Sciences of Ukraine, Ukraine

  • Author: Gumennaya, M. A.

    National Academy of Sciences of Ukraine, Ukraine

  • Author: Fomenko, A. A.

    National Academy of Sciences of Ukraine, Ukraine

  • Author: Trachevsky, V. V.

    National Academy of Sciences of Ukraine, Ukraine

  • Author: Davydenko, V. V.

    National Academy of Sciences of Ukraine, Ukraine

  • Author: Bliznyuk, V. N.

    Clemson University, United States

  • Author: Dorokhin, Andriy

    Amphiphilic Polymers in Biological Sensing, Department of Micro- and Nanotechnology, Technical University of Denmark, Produktionstorvet, 2800, Kgs. Lyngby, Denmark

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Protic oligomeric cationic ionic liquids of the oligo(ether urethane) type are synthesized via the reaction of an isocyanate prepolymer based on oligo(oxy ethylene)glycol with M = 1000 with hexamethylene-diisocyanate followed by blocking of the terminal isocyanate groups with the use of amine derivatives of imidazole, pyridine, and 3-methylpyridine and neutralization of heterocycles with ethanesulfonic acid and p-toluenesulfonic acid. The structures and properties of the synthesized oligomeric ionic liquids substantially depend on the structures of the ionic groups. They are amorphous at room temperature, but ethanesulfonate imidazolium and pyridinium oligomeric ionic liquids form a low melting crystalline phase. The proton conductivities of the oligomeric ionic liquids are determined by the type of cation in the temperature range 80-120 degrees C under anhydrous conditions and vary within five orders of magnitude. The resulting compounds are thermally stable up to 200-270 degrees C.
Original languageEnglish
JournalPolymer Science. Series B
Volume56
Issue number5
Pages (from-to)583-592
Number of pages10
ISSN1560-0904
DOIs
Publication statusPublished - 2014
CitationsWeb of Science® Times Cited: No match on DOI
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