Innentitelbild: Ultra‐fast One‐Handed Helix Induction and Its Static Helicity Memory in a Poly(biphenylylacetylene) with a Catalytic Amount of Chiral Ammonium Salts (Angew. Chem. 15/2023)

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