Perpendicularly Aligned, Anion Conducting Nanochannels in Block Copolymer Electrolyte Films
By Christopher G. Arges and Yu Kambe and Hyo Seon Suh and Leonidas E. Ocola and Paul F. Nealey
Published in Chemistry of Materials
NULL
2016
Abstract
Connecting structure and morphology to bulk transport properties, such as ionic conductivity, in nanostructured polymer electrolyte materials is a difficult proposition because of the challenge to precisely and accurately control order and the orientation of the ionic domains in such polymeric films. In this work, poly(styrene-block-2-vinylpyridine) (PSbP2VP) block copolymers were assembled perpendicularly to a substrate surface over large areas through chemical surface modification at the substrate and utilizing a versatile solvent vapor annealing (SVA) technique. After block copolymer assembly, a novel chemical vapor infiltration reaction (CVIR) technique selectively converted the 2-vinylpyridine block to 2-vinyl n-methylpyridinium (NMP+ X
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