title: Induced smectic phases of stoichiometric liquid crystal mixtures.
abstract: We revealed the detailed structures of induced smectic liquid crystal (LC) phases composed of a binary mixture of charge-transfer (CT) LC substances. Although neither of the constituents had highly ordered smectic phases, the mixture exhibited smectic-E (SmE) or smectic-B (SmB) phases when mixed at ratios of 1 : 1 and 2 : 3, respectively. The results of polarized optical microscopy, differential scanning calorimetry, X-ray diffraction, and infrared spectroscopy indicated that the induced smectic phases were stabilized by an exquisite balance between the CT interactions, dipolar interactions, and excluded volume effects. We proposed a possible model for the molecular arrangements in the SmE and SmB phases, which consistently explained the experimental results including the stoichiometric ratios.
authors.affiliation: Department of Pure and Applied Physics, Waseda University, Tokyo, Japan. tabe@waseda.jp and Kagami Memorial Research Institute for Materials Science and Technology, Tokyo, Japan.
authors.forename: Shin-Ya
authors.initials: SY
authors.lastname: Sugisawa
authors.affiliation: Department of Pure and Applied Physics, Waseda University, Tokyo, Japan. tabe@waseda.jp and Kagami Memorial Research Institute for Materials Science and Technology, Tokyo, Japan.
authors.forename: Yuka
authors.initials: Y
authors.lastname: Tabe