Polypeptoids, known as N-substituted polyglycines, possess both the chemical versatility and the synthetic efficiency necessary to enable the precise and systematic investigation of the impact of polymer structure on its functional properties. A new series of monodispersed polypeptoid solid polymer electrolytes bearing multiple ethylene oxide (EO)n moieties has been synthesized by a rapid solid phase synthetic method. The thermodynamic, x-ray scattering and conductivity behaviors of homo- and di-block copolypeptoids with lithium salt have been investigated. The conductivity of homopolypeptoids increases consistently up to 3x10-4 (373K) with temperature due to an amorphous structure. Moreover, we demonstrate that the properties of this class of PEO mimetic polymers can be finely tuned by precisely controlling the polypeptoid sequence and side chain structure in a simple and systematic way.

New class of polypeptoid-based PEO-mimetic polymers for solid polymer electrolytes

243rd National Meeting (2012)

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