title: An unprecedented memory of macromolecular helicity induced in an achiral polyisocyanide in water.
abstract: We have found an unprecedented memory of macromolecular helicity induced in an achiral sodium salt of poly(4-carboxyphenyl isocyanide) (poly-1-Na). Poly-1-Na folds into a one-handed helix through configurational isomerization around the C=N backbones by interactions with optically active amines in water. The helix remains when the optically active amines are completely removed, and further modifications of the side group to carboxy and esters can be possible without loss of the macromolecular helicity memory.
authors.affiliation: Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Ishikawa
authors.forename: Katsuhiro
authors.initials: K
authors.lastname: Maeda
authors.forename: Yuuki
authors.initials: Y
authors.lastname: Mitsutsuji
authors.forename: Eiji
authors.initials: E
authors.lastname: Yashima