Structural characterization of the new polymorphic mesophases formed by bent-core molecules

被引：44
作者：
Eremin, A
Wirth, I
Diele, S
Pelzl, G
Schmalfuss, H
Kresse, H
Nádasi, H
Fodor-Csorba, K
Gács-Baitz, E
Weissflog, W
机构：
[1] Univ Halle Wittenberg, Inst Phys Chem, D-06108 Halle An Der Saale, Germany
[2] Hungarian Acad Sci, Res Inst Solid State Phys & Opt, Budapest, Hungary
[3] Hungarian Acad Sci, Chem Res Ctr, Inst Chem, H-1525 Budapest, Hungary
来源：
LIQUID CRYSTALS | 2002年 / 29卷 / 06期
关键词：
D O I：
10.1080/02678290210136328
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new achiral banana-shaped five-ring 2-methylresorcinol derivative fluorinated on the outer rings has been synthesized. This compound exhibits four antiferroelectric smectic phases characteristic for bent-core molecules (B-2, B'(2), B"(2), B-5). In addition, a highly viscous solid-like phase has been detected which also shows electro-optical switching. This is the first switchable highly ordered B phase. The characterization of the mesophases was made by X-ray diffraction, electro-optical measurements and dielectric spectroscopy.
引用
收藏
页码：775 / 782
页数：8
相关论文
共 17 条
  • [1] Bedel JP, 2001, LIQ CRYST, V28, P1285, DOI 10.1080/0267890110039949
  • [2] SYMMETRY AND DEFECTS IN THE CM PHASE OF POLYMERIC LIQUID-CRYSTALS
    BRAND, HR
    CLADIS, PE
    PLEINER, H
    [J]. MACROMOLECULES, 1992, 25 (26) : 7223 - 7226
  • [3] Structure and properties of liquid crystalline phases formed by achiral banana-shaped molecules
    Diele, S
    Grande, S
    Kruth, H
    Lischka, CH
    Pelzi, G
    Weissflog, W
    Wirth, I
    [J]. FERROELECTRICS, 1998, 212 (1-4) : 169 - 177
  • [4] Experimental evidence for an achiral orthogonal biaxial smectic phase without in-plane order exhibiting antiferroelectric switching behavior -: art. no. 051707
    Eremin, A
    Diele, S
    Pelzl, G
    Nádasi, H
    Weissflog, W
    Salfetnikova, J
    Kresse, H
    [J]. PHYSICAL REVIEW E, 2001, 64 (05): : 6
  • [5] AFM investigations of a sample showing the B2 phase
    Hauser, A
    Schmalfuss, H
    Kresse, H
    [J]. LIQUID CRYSTALS, 2000, 27 (05) : 629 - 634
  • [6] Jákli A, 2000, LIQ CRYST, V27, P1405, DOI 10.1080/026782900750018546
  • [7] FREQUENCY-DEPENDENT SWITCHING BEHAVIOR UNDER TRIANGULAR WAVES IN ANTIFERROELECTRIC AND FERRIELECTRIC CHIRAL SMECTIC PHASES
    LEE, J
    CHANDANI, ADL
    ITOH, K
    OUCHI, Y
    TAKEZOE, H
    FUKUDA, A
    [J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1990, 29 (06): : 1122 - 1127
  • [8] Spontaneous formation of macroscopic chiral domains in a fluid smectic phase of achiral molecules
    Link, DR
    Natale, G
    Shao, R
    Maclennan, JE
    Clark, NA
    Korblova, E
    Walba, DM
    [J]. SCIENCE, 1997, 278 (5345) : 1924 - 1927
  • [9] Mesomorphic and electro-optical properties of new achiral banana-shaped molecules
    Nguyen, HT
    Rouillon, JC
    Marcerou, JP
    Bedel, JP
    Barois, P
    Sarmento, S
    [J]. MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1999, 328 : 177 - 184
  • [10] Distinct ferroelectric smectic liquid crystals consisting of banana shaped achiral molecules
    Niori, T
    Sekine, T
    Watanabe, J
    Furukawa, T
    Takezoe, H
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 1996, 6 (07) : 1231 - 1233
12