Ionic Liquids in Fluid Applications

爱达荷州大学化学系Jean‘ne M.Shreve在无机化学、生物无机化学和金属有机化学计划的支持下，合成和研究含有全氟烷基或多氟烷基醚的新型离子液体。咪唑、三氮唑和四唑阳离子将与各种强烷基化剂进行处理，以提供单氟烷化、双氟烷化和多全氟烷基化离子液体。多齿中心或模板，包括磷腈、三氮杂氮、大环胺、联吡啶以及聚合物磷腈和氮杂环，也将被全氟或多氟烷基化，以得到新型的含氟离子液体。与目前的非氟离子液体相比，含氟离子液体有望具有更高的密度、更高的热稳定性、更高的抗氧化性和可控粘度，离子液体或熔盐是有吸引力的挥发性有机化合物的替代品。离子液体具有适用温度范围宽、蒸汽压低、粘度和密度可调的热稳定性和化学稳定性等特点。它们还被用作低温/高温流体、极端环境中的润滑剂以及燃料电池中的电解液。该项目将开发一种新型的含氟离子液体。本科生、研究生和博士后研究人员将学习宝贵的技术技能，并获得实验设计和新材料应用方面的经验，以满足现实世界的需要。该项目还支持两年制和四年制大学教师的外展工作。

Jean'ne M. Shreeve, Department of Chemistry, University of Idaho, is supported by the Inorganic, Bioinorganic and Organometallic Chemistry Program to synthesize and study new ionic liquids containing perfluoroalkyl or polyfluoroalkyl ether groups. Imidazolium, triazolium and tetrazolium cations will be treated with various strong alkylating agents to provide mono-, di- and poly-perfluoroalkylated ionic liquids. Polydentate centers or templates, including phosphazenes, triazines, macrocyclic amines, bipyridines and polymeric phosphazenes and azines will also be perfluoro- or polyfluoroalkylated to give new types of fluorinated ionic liquids. The fluorinated ionic liquids are expected to have higher densities, higher thermal stabilities, higher oxidation resistance and controlled viscosities than current non-fluorinated ionic liquids.Ionic liquids, or molten salts, are attractive alternatives to volatile organic compounds as solvents. The desirable properties of ionic liquids include a wide useful temperature range, low vapor pressure, thermal and chemical stability with tunable viscosity and density. They are also being explored as low/high temperature fluids, lubricants in extreme environments and as electrolytes in fuel cells. This project will develop a new class of fluorinated ionic liquids. Undergraduate, graduate student and postdoctoral researchers will learn valuable technical skills and gain experience in experimental design and application of new materials to real world needs. This project also supports outreach efforts to two-year and four-year college faculty.