• DOI:10.1021/MA201067H
• Corpus ID: 101700170

Effect of Nanoscale Morphology on the Conductivity of Polymerized Ionic Liquid Block Copolymers

@article{Weber2011EffectON,
  title={Effect of Nanoscale Morphology on the Conductivity of Polymerized Ionic Liquid Block Copolymers},
  author={Ryan L. Weber and Yuesheng Ye and Andrew L. Schmitt and Steven M. Banik and Yossef A. Elabd and Mahesh K. Mahanthappa},
  journal={Macromolecules},
  year={2011},
  volume={44},
  pages={5727-5735}
}

• R. Weber, Yuesheng Ye, +3 authors M. Mahanthappa
• Published 24 June 2011
• Materials Science
• Macromolecules

Polymerized ionic liquid (POIL) block copolymers represent a unique class of materials for fundamental studies of single ion conduction as a function of morphology in microphase-separated polymer electrolytes for energy storage and conversion applications. We describe the synthesis of a series of poly(styrene-b-4-vinylbenzylalkylimidazolium bis(trifluoromethanesulfonyl)imide) (PS-b-PVBn(alkyl)ImTFSI; alkyl = CH3 (Me), n-C4H9 (Bu), n-C6H13 (Hex)) diblock copolymers (2.7–17.0 mol % POIL) via exhaustive functionalization and ion exchange of relatively narrow molecular weight dispersity poly(styrene-b-4-vinylbenzyl chloride) precursors derived from nitroxide-mediated block copolymerizations. The solid-state morphology of these PS-b-PVBn(alkyl)ImTFSI copolymers were studied using a combination of temperature-dependent synchrotron small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM). From electrochemical impedance spectroscopy measurements, we observe that lamellar samples having simil...