Abstract
Catalytic ultra-fast helix induction and its static helicity memory in a poly(biphenylylacetylene) were achieved by using chiral ammonium salts, as reported by Katsuhiro Maeda, Eiji Yashima, and co-workers in their Research Article (e202217020). The remarkable acceleration of the helix-induction rate accompanied by strong chiral amplification relies on crown-ether-like specific intermolecular complex formation of the two methoxymethoxy groups of the biphenyl pendants with chiral ammonium species.
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