Physicochemical properties of urethane-containing imidazolium ionic liquids from a non-isocyanate synthetic approach

Project Abstract

Ionic polymers which contain ionic liquid (IL) functional groups in the repeating unit represent a diverse class of materials which have been utilized in a wide variety of applications, from solid polymer electrolytes and ion-exchange membranes to gas separation membranes. The ability to fine-tune the ionic group(s) (cationic, anionic, or zwitterionic) and their location/spacing in the polymer architecture has resulted in a seemingly endless number of possible designs. Recently, much of inspiration for novel IL-derived polymers has been directly related to tunable, “task-specific” ILs. Herein we will discuss the synthesis and physicochemical properties of imidazolium-containing ILs which also bear a urethane group. These ILs were prepared using a non-isocyanate synthetic approach with the idea that the hydrogen bonding power of the urethane functional group could provide some unique end-use properties. Architectural variables for this initial structure-activity study include the length of two different alkyl end groups as well as the choice of counteranion. All of the ILs were fully characterized by NMR spectroscopy and elemental analysis, and their physicochemical properties studied included density, viscosity and any thermal transitions as determined by differential scanning calorimetry. Conductivities were found to be on the order of 10-3 S/cm at 25 °C. In addition to this IL study, our initial approaches to translating this information to IL-containing polymers (ionenes and poly(ionic liquid)s) will be presented

Conference

Conference name (full, no abbreviations): Southeastern Regional Meeting of the American Chemical Society

Dates: October 19-22, 2022 (San Juan, Puerto Rico)

Sponsoring body: American Chemical Society

Conference website: www.sermacs2022.org

Funding Type

Travel Grant

Academic College

Jesse D. Jones College of Science, Engineering and Technology

Area/Major/Minor

Chemistry/Materials Science/Mathematics andPhysics

Degree

Bachelor

Classification

Senior

Name

Kevin Miller, PhD

Academic College

Jesse D. Jones College of Science, Engineering and Technology

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