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Intermolecular Interactions and Even-odd Effects of Mesogens

Research Project

Project/Area Number 11640577
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 機能・物性・材料
Research InstitutionOchanomizu University

Principal Investigator

HORI Kayako  Graduate School of Humanities and Sciences, Associated Prof., 人間文化研究科, 助教授 (70029891)

Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 2001: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2000: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1999: ¥1,700,000 (Direct Cost: ¥1,700,000)
Keywordsliquid crystal / crystal structure / odd-even effect / cyano group / chiral recognition / intermolecular interaction / isotropic mesophase / 結晶間相転移 / 親フッ素効果 / 半経験的分子軌道法 / 極性 / 赤外分光 / エステル結合
Research Abstract

(1) Systematic comparison of the crystal structures of two typical mesogenic series, 4'-alkoxy-4-cyanobiphenyls, (nOCB) and 4'-alkyl-4-cyanobiphenyls (nCB), has revealed that a cyano-cyano interaction is dominant in the higher members of nOCB, while nCB shows a remarkable odd-even effect ; cyano-cyano and cyano-phenyl interactions for the even and odd members, respectively. IR wavenumbers of the CN stretching vibrations are 0.5 and 1.0 cm^<-1> higher for nCB than for nOCB in dilute solutions and liquid crystalline phases, respectively. The former is attributable to the different intra-molecular interactions, while the latter, in addition, to the difference in the intermolecular interactions, which are further to the difference in the degree of overlapping of molecules, larger by 3 A for nOCB than for nCB. Similar results were obtained for two series of cyano-esters.
(2) Crystal structures have been determined for two series of dimeric mesogens with two mesogenic cores connected with an alkyl chain, which show remarkable odd-even effects in melting and clearing points. Extended and bow-shaped molecules are arranged with half-and-half overlapping for the even and odd members, respectively, being related to the odd-even effects.
(3) In order to obtain information about intermolecular interactions, crystal structures have been systematically determined for compounds with slightly different molecular configurations but different liquid crystalline behavior, such as a diphenylpyrimidine having a unique isotropic liquid crystalline phase and its isomers with no isotropic mesophases.

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (35 results)

All Other

All Publications (35 results)

  • [Publications] K.Hori, H.Wu: "Crystalline Polymorphs of Higher Homologues of 4'-alkoxy-4-cyanobiphenyl, nOCB (n=8,9,10 and 12)"Liq. Cryst.. 26. 37-43 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.Kuribayashi, K.Hori: "Crystal structures of 4'-hexyl-4-cyanobiphenyl (6CB) and 4'-heptyl-4-cyano-biphenyl (7CB) in relation to odd-even effects"Liq. Cryst.. 26. 809-815 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Tamura, K.Hori: "Intermolecular Interactions in Crystal Structures of Isomeric Mesogens with Two Ester Linkages"Bull. Chem. Soc. Jpn.. 73. 843-850 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Hori, M.Kunbayashi, M.Iimuro: "Intra-and Intermolecular Interactions in Mesogenic Cyano Compounds"Phys. Chem. Chem. Phys.. 2. 2863-2868 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] N.Seo, K.Hori: "Packing Modes in Crystals of Mesogenic Biphenyl Esters with Normal Alkyl and/or Alkoxy Chains"Liq. Cryst.. 28. 77-88 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y.Matsunaga, K.Hori, A.Yoshizawa, T.Kusumoto: "Chiral recognition in the crystal structure of a dichiral mesogen with a unique isotropic mesophase : 2-[4-[(R)-2-fluorohexyloxy]phenyl]-5-[4-[(S)-2-fluoro-2-methyldecanoyloxy]phenylpyrimidine"Liq.Cryst.. 28. 1805-1812 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K.Hori(分担執筆): "'Physical Properties of Liquid Crystals : Nematics' ed by D.A.Dunmur, A.Fukuda and G.R.Luckhurst"IEE, London. 671(197-206) (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Hori and H. Wu: "Crystalline Polymorphs of Higher Homologues of 4'-alkoxy-4-cyanobiphenyl, nOCB (n=8,9,10 and 12)"Liqu. Cryst.. 26. 37-43 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M. Kuribayashi and K. Hori: "Crystal structures of 4'-hexyl-4-cyanobiphenyl (6CB) and 4'-heptyl-4-cyanobiphenyl (7CB) in relatio to odd-even effects"Liq. Cryst.. 26. 809-815 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Tamura, H. Uchida and IK. Hori: "Influence of Directions of Two Ester Linkages on Crystal Structures of Isomeric Mesogens"Mol. Cryst. Liq. Cryst.. 330. 201-206 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Tamura and K. Hori: "Intermolecular Interactions in Crystal Structures of Isomeric Mesogens with Two Ester Linkages"Bull. Chem. Soc. Jpn.. 73. 843-850 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Hori, M. Kuribayashi, and M. Iimuro: "Intra- and Intermolecular Interactions in Mesogenic Cyano Compounds"Phys. Chem. Chem. Phys.. 2863-2868 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] N. Seo and K. Hori: "Packing Models in Crystals of Mesogenic Biphenyl Esters with Normal Alkyl and/or Alkoxy Chains"Liq. Cryst.. 28. 77-88 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Kimoto, M. Duan, H. Okamoto, V.F. Petrov, K. Hori, and S. Takenaka: "The Effect of Trifluoromethyl and Difluoromethoxy Groups on Mesomorphic Properties"Mol. Cryst. Liq. Cryst.. 364. 733-738 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Hori, C. Kubo, H. Okamoto, and S. Takenaka: "Crystal Structures of Several Fluoro-mesogens"Mol. Cryst. Liq. Cryst.. 365. 617-637 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M. Yoshida, N. Seo, K. Hori, and H. Toriumi: "Computer Simulation of Biphenyl-Phenyl Ester Liquid Crystals"Mol. Cryst. Liq. Cryst.. 365. 813-826 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Y. Matsunaga, K. Hori, A. Yoshizawa, and T. Kusumoto: "chiral recognition in the crystal structure of a dichiral mesogen with a unique isotropic mesophase : 2-[4-[(R)-2-fluorohexyloxy]phenyl]-5-[4-[(S)2-fluoro-2-methyldecanoyloxy]phenylphyrimidine"Liq. Cryst.. 28. 1805-1812 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Hori: "Intermolecular Interactions of Mesogens Revealed through Crystal Structures"EKISHO (Journal of the Japanese Liquid Crystal Society). 5. 316-326 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Hori: "Physical Properties of Liquid Crystals : Nematics' ed by D.A. Dummer, A. Fukuda and G.R. Luckhurst (IEE, London, 2000)"4.3 Crystal structures of mesogens that form nematic mesophases. Chapter 4. 197-206

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] N.Seo, K.Hori: "Packing Modes in Crystals of Mesogenic Biphenyl Esters with Normal Alkyl and/or Alkoxy Chains"Lig. Cryst.. 28. 77-88 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Kimoto, M.Duan, H.Okamoto, V.F.Petrov, K.Hori, S.Takenaka: "The Effect of Trifluoromethyl and Difluoromethoxy Groups on Mesomorphic Properties"Mol. Cryst. Liq. Cryst.. 364. 733-738 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Hori, C.Kubo, H.Okamoto, S.Takenaka: "Crystal Structures of Several Fluoro-mesogens"Mol. Cryst. Liq. Cryst.. 365. 617-637 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Yoshida, N.Seo, K.Hori, H.Toriumi: "Computer Simulation of Biphenyl-Phenyl Ester Liquid Crystals"Mol. Cryst. Liq. Cryst.. 365. 813-826 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Matsunaga, K.Hori, A.Yoshizawa, T.Kusumoto: "Chiral recognition in the crystal structure of a dichiral mesogen with a unique isotropic mesophase : 2-[4-[(R)-2-fluorohexyloxy]phenyl]-5-[4-[(S)-2-fluoro-2-methyldecanoyloxy]-phenylpyrimidine"Lig. Cryst.. 28. 1805-1812 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 堀 佳也子: "結晶構造を通して液晶分子の相互作用を探る"液晶(日本液晶学会誌). 5(4). 316-326 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Tamura and K.Hori: "Intermolecular Interactions in Crystal Structures of Isomeric Mesogens with Two Ester Linkages."Bull.Chem.Soc.Jpn.. 73. 843-850 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Hori,M.Kuribayashi,and M.Iimuro: "Intra-and Intermolecular Interactions in Mesogenic Cyano Compounds."Phys.Chem.Chem.Phys.. 2. 2863-2868 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] N.Seo and K.Hori: "Packing Modes in Crystals of Mesogenic Biphenyl Esters with Normal Alkyl and/or Alkoxy Chains."Liquid Crystals. 28. 77-88 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Hori,C.Kubo,H.Okamoto,and S.Takenaka: "Crystal Structures of Several Fluoro-mesogens."Mol.Cryst.Liq.Cryst.. (in press).

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Kimoto,M.Duan,H.Okamoto,V.F.Petrov,K.Hori,and S.Takenaka: "The Effect of Trifluoromethyl and Difluoromethoxy Groups on Mesomorphic Properties."Mol.Cryst.Lig.Cryst.. (in press).

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Yoshida,N.Seo,K.Hori,and H.Toriumi: "Computer Simulation of Biphenyl-Phenyl Ester Liquid Crystals."Mol.Cryst.Lig.Cryst.. (in press).

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Hori,H.Wu: "Crystalline Polymorphs of Higher Homologues of 4'-alkoxy-4-cyanobiphenyl, nOCB (n=8, 9, 10 and 12)"Liq. Cryst.. 26. 37-43 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Kuribayashi,K.Hori: "Crystal structures of 4'-hexyl-4-cyanobiphenyl (6CB) and 4'-heptyl-4-cyanobiphenyl (7CB) in relation to odd-even effect"Liq. Cryst.. 26. 809-815 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Tamura,H.Uchida,K.Hori: "Influence of Directions of Two Ester Linkages on Crystal Structures of Isomeric Mesogens"Mol. Cryst. Liq. Cryst.. 330. 201-206 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Tamura,K.Hori: "Intermolecular Interactions in Crystal Structures of Isomeric Mesogens with Two Ester Linkages"Bull. Chem. Soc. Jpn.. 73(in press). (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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