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Polymer Bulletin

, Volume 44, Issue 4, pp 393–400 | Cite as

Synthesis of liquid crystalline rod-coil dimers based on poly(propylene oxide) coil

  • Byoung-Ki Cho
  • Ja-Hyoung Ryu
  • Wang-Cheol Zin
  • Myongsoo Lee

Summary

The synthesis and characterization of 4-[poly(propyleneoxy)propyloxy]-4'-bis[4-decyloxycarbonylbiphenyl-4'-biphenylcarboxylate] with poly(propylene oxide) coil of seven (dimer-7), twelve (dimer-12), seventeen (dimer-17), twenty one (dimer-21) are described. Dimer-7 with short length of poly(propylene oxide) coil exhibits successively smectic C, smectic A and nematic mesophases, while dimer-12 and dimer-17 with longer lengths of coils exhibit a bicontinuous cubic mesophase with Ia3d symmetry. Further increasing the length of coil, as in the case of dimer-21, suppresses liquid crystallinity.

Keywords

Oxide Propylene Short Length Longe Length Propylene Oxide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Byoung-Ki Cho
    • 1
  • Ja-Hyoung Ryu
    • 1
  • Wang-Cheol Zin
    • 2
  • Myongsoo Lee
    • 1
  1. 1.Department of Chemistry, Yonsei University, Shinchon 134, Seoul 120-749, KoreaKR
  2. 2.Department of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, KoreaKR

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