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David Salas-de la Cruz, Matthew D. Green, Yuesheng Ye, Yossef A. Elabd, Timothy E. Long and Karen I. Winey Correlating backbone-to-backbone distance to ionic conductivity in amorphous polymerized ionic liquids Journal of Polymer Science Part B: Polymer Physics 50

Version of Record online: 15 DEC 2011 | DOI: 10.1002/polb.23019

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By varying the chemical structure of ionic liquid monomers, the morphology and ionic conductivity of polymerized ionic liquids can be controlled. The morphology and ionic conductivity of poly(1-n-alkyl-3-vinylimidazolium)-based poly(nVIM-X) homopolymers polymerized from ionic liquids are investigated as a function of the alkyl chain length and counterion type. X-ray scattering of the homopolymers provides morphological information to determine ionic conductivity. While increasing the pendant length can decrease Tg to increase conductivity, this also increases the intermolecular separation, which acts to decrease ionic conductivity.

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