Experimental studies on the B7 phase of a banana-shaped achiral mesogen

被引:36
|
作者
Rao, DSS [1 ]
Nair, GG [1 ]
Prasad, SK [1 ]
Nagamani, SA [1 ]
Yelamaggad, CV [1 ]
机构
[1] Ctr Liquid Crystal Res, Bangalore 560013, Karnataka, India
关键词
D O I
10.1080/02678290110051567
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We report optical, X-ray, polarization and response time measurements on a new 'banana-shaped' mesogen. The material has a salicylaldimine segment in the linear part of the core, but is otherwise structurally similar to the mesogen first reported to show a banana mesophase. Textural and X-ray studies show that this mesophase has all the characteristics of the recently discovered B-7 phase. It is observed that the voltage required to obtain electrical switching is quite low compared with values for the few other materials exhibiting the B-7 phase.
引用
收藏
页码:1239 / 1243
页数:5
相关论文
共 50 条
  • [31] Mesomorphic and electro-optical properties of new achiral banana-shaped molecules
    Nguyen, HT
    Rouillon, JC
    Marcerou, JP
    Bedel, JP
    Barois, P
    Sarmento, S
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1999, 328 : 177 - 184
  • [32] Ferroelectric properties exhibited by mesophases of compounds composed of achiral banana-shaped molecules
    Reddy, RA
    Sadashiva, BK
    JOURNAL OF MATERIALS CHEMISTRY, 2002, 12 (09) : 2627 - 2632
  • [33] Spectroscopy investigation of ferroelectric liquid crystals composed of banana-shaped achiral molecules
    Otowski, W
    Biernat, A
    Fodor-Csorba, K
    Witko, W
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2006, 450 : 229 - 237
  • [34] Effect of lateral substituents on the mesophases formed by some achiral banana-shaped molecules
    Sadashiva, BK
    Murthy, HNS
    Dhara, S
    LIQUID CRYSTALS, 2001, 28 (03) : 483 - 487
  • [35] Helical superstructures in a novel smectic mesophase formed by achiral banana-shaped molecules
    Pelzl, G
    Diele, S
    Jákli, A
    Lischka, C
    Wirth, I
    Weissflog, W
    LIQUID CRYSTALS, 1999, 26 (01) : 135 - 139
  • [36] Liquid crystal phases of achiral banana-shaped molecules: a computer simulation study
    Memmer, R
    LIQUID CRYSTALS, 2002, 29 (04) : 483 - 496
  • [37] Detailed optical studies of several banana-shaped compounds in liquid crystal B2 phase
    Olson, DA
    Cady, A
    Weissflog, W
    Nguyen, HT
    Huang, CC
    PHYSICAL REVIEW E, 2001, 64 (05):
  • [38] Detailed optical studies of several banana-shaped compounds in liquid crystal B2 phase
    Olson, D.A.
    Cady, A.
    Weissflog, W.
    Nguyen, H.T.
    Huang, C.C.
    Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 2001, 64 (5 I): : 1 - 051713
  • [39] On the interpretation of the racemic states of the B2 phase of banana-shaped mesogens
    Folcia, CL
    Ortega, J
    Etxebarria, J
    LIQUID CRYSTALS, 2003, 30 (10) : 1189 - 1191
  • [40] Achiral banana-shaped mesogenic bidentate ligands and their Cu(II) and Pd(II) complexes
    Yelamaggad, CV
    Nagamani, SA
    Nair, GG
    Rao, DSS
    Prasad, SK
    Jakli, A
    LIQUID CRYSTALS, 2002, 29 (09) : 1181 - 1185