title: Induced antiferroelectric smectic- C(*)(A) phase by doping ferroelectric- C* phase with bent-shaped molecules
abstract: Doping of the ferroelectric Sm-C(*) phase with bent-shaped molecules induces the antiferroelectric Sm-C(*)(A) phase. The effect was observed by means of electro-optic and dielectric measurements in systems with weak interlayer interactions in which the relative strength of anticlinic-synclinic order between molecules in adjacent layers is easily controlled by external factors. Fourier-transform infrared spectroscopy studies suggest that the bent-shaped molecules are not flat. They reorient upon the electric field-induced antiferroelectric-ferroelectric transition to adopt a position in which the average direction of the carbonyl groups is in the smectic plane and a bending tip along the C2 symmetry axis.
authors.affiliation: Department of Organic and Polymeric Materials, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan and Department of Chemistry, Warsaw University, Al.Zwirki I Wigury 101, 02-089 Warsaw, Poland.
authors.initials: E
authors.lastname: Gorecka
authors.initials: M
authors.lastname: Nakata
authors.initials: J
authors.lastname: Mieczkowski
authors.initials: Y
authors.lastname: Takanishi
authors.initials: K
authors.lastname: Ishikawa
authors.initials: J
authors.lastname: Watanabe
authors.initials: H
authors.lastname: Takezoe
authors.initials: SH
authors.lastname: Eichhorn
authors.initials: TM
authors.lastname: Swager