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Molecular Volume Effects on the Dynamics of Polymerized Ionic Liquids and their Monomers
Choi, U Hyeok,Mittal, Anuj,Price Jr., Terry L.,Lee Jr., Minjae,Gibson Jr., Harry W.,Runt Jr., James,Colby Jr., Ralph H. Elsevier 2015 ELECTROCHIMICA ACTA Vol.175 No.-
<P><B>Abstract</B></P> <P>The dependences of the glass transition temperature and the dielectric constant on molecular volume of the repeat unit for polymerized ionic liquids, the monomers they were polymerized from and simple ionic liquids, are reviewed and compared. The ionic conductivities of these materials and the frequencies at which ionic rearrangements occur are shown to be controlled by their glass transition temperatures. The ionic conductivity is proportional to the product of dielectric constant and ionic rearrangement frequency, with the proportionality constant determined by the molecular volume of the repeat unit.</P>