NEW INDUCTIONS OF COLUMNAR MESOPHASES IN NEMATIC DISCOTIC MULTIYNE MESOGENS

被引：16
|
作者：
PRAEFCKE, K
SINGER, D
KOHNE, B
机构：
[1] Institute of Organic Chemistry, Technische Universitat Berlin, Berlin 12
来源：
LIQUID CRYSTALS | 1993年 / 13卷 / 03期
关键词：
D O I：
10.1080/02678299308026316
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
In examples of two large naphthalene- and triphenylene-centred hexaynes exhibiting only the nematic discotic (N(D)) type of mesophase, a new kind of phase induction was observed. These disc-shaped nematogens were doped with numerous dipolar carboycyclic compounds leading to the induction of two types of columnar mesophase (i.e. D(ro) and D(ho)). The phase behaviour of these binary systems, depending on the structure of the dopant applied, was studied by polarizing microscopy.
引用
收藏
页码：445 / 454
页数：10
相关论文
共 50 条
  • [31] Synthesis and characterization of a novel liquid crystalline polymer showing a nematic columnar to nematic discotic phase transition
    Kouwer, PHJ
    Jager, WF
    Mijs, WJ
    Picken, SJ
    MACROMOLECULES, 2000, 33 (12) : 4336 - 4342
  • [32] Supramolecular columnar discotic nematic liquid crystal by hydrogen bonding: Synthesis and characterization
    Jber, Nasreen R.
    Karam, Nisreen H.
    Al-Dujaili, Ammar H.
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2018, 675 (01) : 29 - 38
  • [33] INDUCTION OF A NEMATIC COLUMNAR PHASE IN A DISCOTIC HEXAGONAL ORDERED PHASE FORMING SYSTEM
    BENGS, H
    KARTHAUS, O
    RINGSDORF, H
    BAEHR, C
    EBERT, M
    WENDORFF, JH
    LIQUID CRYSTALS, 1991, 10 (02) : 161 - 168
  • [34] A liquid-crystalline silsesquioxane dendrimer exhibiting chiral nematic and columnar mesophases
    Saez, IM
    Goodby, JW
    Richardson, RM
    CHEMISTRY-A EUROPEAN JOURNAL, 2001, 7 (13) : 2758 - 2764
  • [35] A liquid-crystalline silsesquioxane dendrimer exhibiting chiral nematic and columnar mesophases
    Saez, Isabel M.
    Goodby, John W.
    Richardson, Robert M.
    2001, Wiley-VCH Verlag (07)
  • [36] Preferential formation of columnar mesophases via peripheral modification of discotic π-systems with immiscible side chain pairs
    Sakurai, Tsuneaki
    Tsutsui, Yusuke
    Kato, Kenichi
    Takata, Masaki
    Seki, Shu
    JOURNAL OF MATERIALS CHEMISTRY C, 2016, 4 (07) : 1490 - 1496
  • [37] Significantly Enhanced Thermotropic Liquid Crystalline Columnar Mesophases in Stereoregular Polymethylenes with Discotic Triphenylene Side Groups
    Li, Xiao
    Mu, Bin
    Chen, Changlong
    Chen, Jian
    Liu, Jiang
    Liu, Feng
    Chen, Dongzhong
    MACROMOLECULES, 2019, 52 (18) : 6913 - 6926
  • [38] Effect of surfaces: shift of the lyotropic nematic-isotropic liquid phase transition temperatures in nematic-calamitic and nematic-discotic mesophases
    Nesrullajev, A
    Tepehan, F
    Kazanci, N
    MATERIALS CHEMISTRY AND PHYSICS, 2002, 73 (01) : 74 - 77
  • [39] Discotic bimetallomesogens: Highly disordered mesophases of columnar hexagonal arrangements in bis(tetraketonate) vanadyl and copper complexes
    Lai, CK
    Lin, FJ
    JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1997, (01): : 17 - 19
  • [40] DEUTERIUM MAGNETIC-RESONANCE IN THE DISCOTIC COLUMNAR MESOPHASES OF HEAALKYLOXYTRIPHENYLENES - THE CONFORMATION OF THE ALIPHATIC SIDE-CHAINS
    GOLDFARB, D
    LUZ, Z
    ZIMMERMANN, H
    JOURNAL OF CHEMICAL PHYSICS, 1983, 78 (12): : 7065 - 7072
12345