COLUMNAR LIQUID-CRYSTALS IN OLIGOSACCHARIDE DERIVATIVES .1. DISCOTIC COLUMNAR LIQUID-CRYSTALS IN CELLOBIOSE OCTADECANOATE AND CELLOTRIOSE HENDECADECANOATE

被引:31
作者
ITOH, T
TAKADA, A
FUKUDA, T
MIYAMOTO, T
YAKOH, Y
WATANABE, J
机构
[1] TOKYO INST TECHNOL,DEPT POLYMER CHEM,MEGURO KU,TOKYO 152,JAPAN
[2] KYOTO UNIV,INST CHEM RES,UJI,KYOTO 611,JAPAN
关键词
D O I
10.1080/02678299108035499
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Cellobiose octadecanoate and cellotriose hendecadecanoate were synthesized and their mesophase properties were studied. Both ester derivatives show enantiotropic mesophases in the temperature region below 100-degrees-C. From the observations of microscopic texture and X-ray pattern, the mesophase was found to be of the hexagonal columnar, in which the column is built up by a periodic stacking of the cellobiose or cellotriose skeleton and packed into a two-dimensional hexagonal lattice. The mesophase is thus similar to the hexagonal ordered columnar (D(ho)) phase in a class of discotics, indicating that cellobiose and cellotriose moieties can work as discotic mesogens.
引用
收藏
页码:221 / 228
页数:8
相关论文
共 15 条
  • [11] KOHNE B, 1984, ANGEW CHEM, V96, P70
  • [12] LEVELUT AM, 1986, J PHYS-PARIS, V47, P3571
  • [13] MESOGENS CONTAINING THE DOBOB GROUP
    MALTHETE, J
    COLLET, A
    LEVELUT, AM
    [J]. LIQUID CRYSTALS, 1989, 5 (01) : 123 - 131
  • [14] Tinh N. H., 1981, MOL CRYST LIQ CRYST, V68, P101
  • [15] TETRABENZOCYCLODODECATETRAENE - A NEW CORE FOR MESOGENS EXHIBITING COLUMNAR MESOPHASES
    ZIMMERMANN, H
    POUPKO, R
    LUZ, Z
    BILLARD, J
    [J]. LIQUID CRYSTALS, 1988, 3 (6-7) : 759 - 770