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Original Articles

Crystal structures of ferro- and antiferroelectric mesogens with a 1-methylalkoxycarbonyl group

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Pages 311-319 | Received 26 Jul 1995, Accepted 06 Oct 1995, Published online: 24 Sep 2006

References

  • Chandani , A. D. L. , Ouchi , Y. , Takezoe , H. , Fukuda , A. , Terashima , K. , Furukawa , K. and Kishi , A. 1989 . Jpn. J. appl. Phys. , 28 : L1261
  • Johno , M. and Yui , T. 1992 . Future Liquid Crystal Displays and its Materials , Edited by: Fukuda , A. Tokyo : CMC . Chap. 14 (in Japanese)
  • Ito , K. , Endo , K. , Hori , K. , Nemoto , T. , Uekusa , H. and Ohashi , Y. 1994 . Liq. Cryst. , 17 : 747 and references cited therein
  • Hori , K. , Kawahara , S. and Ito , K. 1993 . Ferroelectrics , 147 : 91
  • Hori , K. and Endo , K. 1993 . Bull. chem. Soc. Jpn. , 66 : 46
  • Asahina , S. , Sorai , M. , Fukuda , A. , Takezoe , H. , Furukawa , K. , Terashima , K. , Suzuki , Y. and Kawamura , I. Abstracts of Fourth International Conference of Ferroelectric Liquid Crystals . 28 September-1 October , Tokyo, Japan. pp. P-35
  • Neundorf , D. , Diele , S. , Ernst , S. , Saito , S. , Demus , D. , Inukai , T. and Murashiro , K. 1993 . Ferroelectrics , 147 : 95
  • Abstracts of Fourth International Conference of Ferroelectric Liquid Crystals . 28 September-1 October , Tokyo, Japan. P-21
  • Crystal Structure Analysis Package , Molecular Structure Corporation . teXsan, 1985 and 1992
  • Sheldrick , G. M. 1993 . Germany : University of Gottingen . SHELXL93, program for the refinement of the crystal structure
  • Wilson , A. J. C. , ed. 1992 . International Tables for Crystallography , Vol. C , Dordrecht : Kluwer Academic Publishers .
  • Johnson , C. 1965 . Tennessee, , U.S.A. : Oak Ridge National Laboratory . ORTEP, Report ORNL-3794
  • Abrahamsson , S. 1959 . Ark. Kemi , 11 : 65
  • The Japan Oil Chemists' Society . 1958 . Tables for Oils and Fats , 110 Tokyo : Maruzen . The volume per methylene unit in the liquid state was estimated as difference in the molar volumes for CnH2n+2 and Cn+1H2n+4 which were derived from density data at 20°C
  • Kumar , S. 1984 . Phys. Rev. A. , 23 : 3207
  • Kim , K. H. , Takanishi , Y. , Ishikawa , K. , Takezoe , H. and Fukuda , A. 1994 . Liq. Cryst. , 16 : 185 In this article, they concluded that peak (b) occured below (not at) the phase transition temperature from the higher temperature solid to SC A∗, because they observed crystalline patterns of the Raman spectra in the temperature range between peaks (b) and (d). However, it is reasonable that the crystalline patterns were observed in the temperature range, because the stabilization to a more stable crystalline state occurs at the exothermic peak (c) immediately following peak (b). We also reported crystalline patterns of X-ray diffraction in the same temperature range [5]. In addition, an endothermic peak (entropy increase such as chain melting) should be associated to any change of the gradient of the Gibbs energy (G), because of a general relation (ΔG/T)p = -ΔS. Thus, their microscopic interpretation that peak (b) is due to partial chain melting and our macroscopic interpretation that the change corresponds to the higher temperature solid to the SC A∗ phase transition are compatible
  • Yvon , K. , Jeitschko , W. and Parthe , E. 1977 . PULVERIX, Laboratoire de Crystallographie aux Rayons X , University of Geneva .

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