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Liquid Crystallinity of Thermotropic Liquid crystal Polymers Studied by Two-Dimensional Poralized Infrared Spectroscopy and X-ray Diffraction Correlation Spectroscopy

Research Project

Project/Area Number 14540477
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical chemistry
Research InstitutionKwansei Gakuin University

Principal Investigator

OZAKI Yukihiro  Kwansei Gakuin University, School of Science and Technology, Professor, 理工学部, 教授 (00147290)

Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2004: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2003: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2002: ¥1,100,000 (Direct Cost: ¥1,100,000)
KeywordsInfrared Spectroscopy / X-ray diffraction / Liquid crystal polymers / Two-dimensional correlation spectroscopy / Thermal liquid crystals / X線回折法
Research Abstract

Thermotropic liquid crystal polymers, R_1,R_2,R_3, and R_4, which contain a phenyl group in the main chain, have a rigid backbone and in their side chains a low molecular weight liquid crystal is incorporated. At the end of their side chains a flexible alkoxy group -O(CH_2)_5-CH_3 is attached to realize liquid crystalline states by reducing their melting points. The purpose of the present study was to explore the relation between the structure and the liquid crystallinity of the four kinds of liquid crystalline polymers, R_1,R_2,R_3,R_4 by using two-dimensional infrared spectroscopy and x-ray diffraction correlation spectroscopy.
First of all, the phase transition temperatures of R_1,R_2,R_3, and R_4 were determined by measuring differential scanning calorimetry (DSC) and polarized microscopy. It was found from x-ray diffraction patterns that R_1,R_2,R_3, and R_4 are nematic liquid crystals and that not only the mesogen but also the main chain are oriented with the side chains being fitted inside the other. The orientation is not two dimensional but three dimensional. it is not simple one but complicated one. The DSC results revealed that R_1,R_2,R_3, and R_4 are not pure nematic liquid crystal but partly smetic liquid crystal. It was found from temperature-dependent infrared spectroscopic study that there are two kinds of C=O groups and conformational change around the C-O bond occurs in the side chain. An asynchronous spectrum calculated from the temperature-dependent infrared spectra of R_1,R_2,R_3, and R_4 elucidated that the side chain is oriented at higher temperature than the main chain. This result was also confirmed by the temperature-dependent x-ray diffraction measurements.

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (25 results)

All 2005 2004 2003 Other

All Journal Article (14 results) Book (1 results) Publications (10 results)

  • [Journal Article] Mechanism of Thermal Phase Transition of a Ferroelectric Liquid Crystal with Monotropic Transition Temperature Studied by Infrared Spectroscopy Combined with Principal Component Analysis and Sample-Sample Two-Dimensional Correlation Spectroscopy2005

    • Author(s)
      J.Zhao, K.Tatani, Y.Ozaki
    • Journal Title

      Applied Spectroscopy 59・5(印刷中)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Dynamics a Ferroelectric Liquid Crystal with a Naphthalene Ring during Electric-Field-Induced Switching Studied by Time-Resolved Infrared Spectroscopy Combined with Two-Dimensional Correlation2005

    • Author(s)
      J.Zhao, Y.Ozaki
    • Journal Title

      Asian Chemistry Letters (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Mechanism of Thermal Phase Transition of a Ferroelectric Liquid Crystal with Monotropic Transition Temperature Studied by Infrared Spectroscopy Combined with Principal Component Analysis and Sample-Sample Two-Dimensional Correlation Spectroscopy2005

    • Author(s)
      J.Zhao, K.Tatani, Y.Ozaki
    • Journal Title

      Applied Spectroscopy 59・5(printing)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Dynamics a Ferroelectric Liquid Crystal with a Naphthalene Ring during Electric-Field Induced Switching Studied by Time-Resolved Infrared Spectroscopy Combined with Two-Dimensional Correlation2005

    • Author(s)
      J.Zhao, Y.Ozaki
    • Journal Title

      Asian Chemistry Letters (printing)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Molecular Aggregation, Orientation, Structure, and Phase Transition in Langmuir-Blodgett Film of a Ferroelectric Liquid crystal with a Naphthalene Ring Studied by Infrared and Ultraviolet Spectroscopies and X-ray Diffraction2005

    • Author(s)
      Z.Wen, Q.Jiang, K.Tatani, Y.Ozaki
    • Journal Title

      Langmuir (発表予定)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Dynamics of a Ferroelectric Liquid Crystal during Electric-Field-Induced Switching Studied by Time-Resolved Infrared Spectroscopy Combined with Normalized Sample-Sample Two-Dimensional Correlation Spectroscopy2005

    • Author(s)
      J.Zhao, Y.Ozaki
    • Journal Title

      Asian Chemistry Letters (発表予定)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] An Infrared Study of Langmuir-Blodgett Films of Side-Chain Chiral Liquid Crystalline Polysiloxane2005

    • Author(s)
      X.Wang, L.Sun, B.Zhao, W.Xu, Q.Xue, K.Yang, Q.Zhang, Y.Ozaki
    • Journal Title

      Langmuir (発表予定)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Two-Dimensional Correlation Spectroscopy2004

    • Author(s)
      Isao Noda, Yukihiro Ozaki
    • Journal Title

      Wiley 295

    • NAID

      10001926801

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Hybrid Two-Dimensional Correlation Parallel Factor Studies on the Switching Dynamics of a Surface-Stabilized Ferroelectric Liquid Crystal2003

    • Author(s)
      Y.Wu, B.Yuan, J.G.Zhao, Y.Ozaki
    • Journal Title

      The Journal of Physical Chemistry B 107

      Pages: 7706-7715

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Electric-Field-Induced Reorientation of a ferroelectric Liquid Crystal Molecule without a Carboxylate Group near the Stereocenter Studied by Time-Resolved Infrared Infrared Spectroscopy Combined with Normaileed Sample-Sample Rwo-Dimensional Correlation Spectroscopy2003

    • Author(s)
      J.G.Zhao, K.Tatani, T.Yoshihara, Y.Ozaki
    • Journal Title

      The Journal of Physical Chemistry B 107

      Pages: 4227-4236

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Method based on polarized infrared spectroscopy for the determination of the spatial orientation of transition dipole moments of a ferroelectricliquid crystal2003

    • Author(s)
      J.G.Zhao, Y.Ozaki
    • Journal Title

      Applied Physical Letters 83

      Pages: 389-391

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Dynamics a Ferroelectric Liquid Crystal with a Naphthalene Ring during Electric-Field-Induced Switching Studied by Time-Resolved Infrared Spectroscopy Combined with Two-Dimensional Correlation2003

    • Author(s)
      J.G.Zhao, J.H.Jiang, T.Yoshihara, H.W.Siesler, Y.Ozaki
    • Journal Title

      Applied Spectroscopy 57

      Pages: 1063-1069

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Electric-Field-Induced Reorientation of a ferroelectric Liquid Crystal Molecule without a Carboxylate Group near the Stereocenter Studied by Time-Resolved Infrared Spectroscopy Combined with Normaileed Sample-Sample Rwo-Dimensional Correlation Spectroscopy2003

    • Author(s)
      J.G.Zhao, K.Tatani, T.Yoshihara, Y.Ozaki
    • Journal Title

      The Journal of Physical Chemistry B 107

      Pages: 4227-4236

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Dynamics a Ferroelectric Liquid Crystal with a Naphthalene Ring during Electric-Field-Induced Switching Studied by Time- Resolved Infrared Spectroscopy Combined with Two-Dimensional Correlation2003

    • Author(s)
      J.G.Zhao, J.H.Jiang, T.Yoshihara, H.W.Siesler, Y.Ozaki
    • Journal Title

      Applied Spectroscopy 57

      Pages: 1063-1069

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Book] Two-Dimensional Correlation Spectroscopy2004

    • Author(s)
      Isao Noda, Yukihiro Ozaki
    • Total Pages
      295
    • Publisher
      Wiley
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] Y.Wu, B.Yuan, J.G.Zhao, Y.Ozaki: "Hybrid Two-dimensional Correlation Parallel Factor Studies on the Switching Dynamics of a Surface-Stabilized Ferroelectric Liquid Crystal"The Journal of Physical Chemistry B. 107. 7706-7715 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] J.G.Zhao, K.Tatani, T.Yoshihara, Y.Ozaki: "Electric-Field-Induced Reorientation of a Ferroelectric Liquid Crystal Molecule Without a Carboxylate Group Near the Stereocenter Studied by Time-Resolved Infrared Spectroscopy Combined with Normalized Sample-Sample Two-Dimensional Correlation Spectroscopy"The Journal of Physical Chemistry B. 107. 4227-4236 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] J.G.Zhao, Y.Ozaki: "Method based on polarized infrared spectroscopy for the determination of the spatial orientation of transition dipole moments of a ferroelectricliquid crystal"Applied Physical Letters. 83. 389-391 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] J.G.Zhao, J.H.Jiang, T.Yoshihara, H.W.Siesler, Y.Oxaki: "Dynamics a Ferroelectric Liquid Crystal with a Naphthalene Ring during Electric-Field-Induced Switching Studied by Time-Resolved Infrared Spectroscopy Combined with Two-Dimensional Correlation"Applied Spectroscopy. 57. 1063-1069 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Katsumoto, T.Tanaka, H.Sato, Y.Ozaki: "Conformational Change of Poly-(N-isopropylacrylamide) during the Coil-Globule Transition Investigated by Attenuated Total Reflection / Infrared Spectroscopy and Density Functional Theory Calculation"J. Phys. Chem. A. 106. 3429-3435 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] H.Sato, M.Shimoyama, T.Kamiya, T.Amari, S.Sasao, T.Ninomiya, H.W.Siesler, Y.Ozaki: "Raman Spectra of High-Density, Low-Density, and Linear Low-Density Polyethylene Pellers and Prediction of Their Physical Properties by Multivdriate Date Analysis"J. Appl. Polymer Sci.. 86. 443-448 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Harumi, Sato, S.Sasao, K.Matsukawa, Y.Kito, T.Ikeda, H.Tashiro, Y.Ozaki: "Raman Mapping Study of Compatibilized and Uncompatibilized Polymer Blends of Nylon 12 and Polyethy lene"Appl. Spectrosc.. 56. 1038-1043 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Furukawa, Y.Kita, S.Sasao, K.Matsukawa, M.Watari, S.Sosic, H.W.Siesler, Y.Ozaki: "On-line monitoring of melt-extrusion transesterification ethylene vinylacetate copolymers near infrared spectroscopy and chemometrics"J. Near. Infrared Spectrosc.. 10. 195-202 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] H.Sato, Y.Katsumoto, S.Sasao, K.Matsukawa, Y.Kita, H.W.Siesler, Y.Ozaki: "Raman, X-Ray Diffraction and Differential Scanning Calorimetry Studies of the Melt-Induced Changes in Uncompatibilized and Compatibilized Blends of High-Density Polyethylene and Nylon 12"Macromol. Symp.. 184. 339-348 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] T.Amari, Y.Ozaki: "Generalized Two-Dimensional Attenuated Total Reflection/Infrared and Near-Infrared Correlation Spectroscopy Studies of Real-Time Monitoring of the Initial Oligomerization of Bis (hydroxyethyl terephthalate)"Macromolecules. 35. 8020-8028 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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