Planar chiral azobenzenophanes as chiroptic switches for photon mode reversible reflection color control in induced chiral nematic liquid crystals

被引：0
|
作者：
Mathews, Manoj [1 ]
Tamaoki, Nobuyuki [1 ]
机构：
[1] Molecular Smart System Group, Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba, Ibaraki 305-8565, Japan
来源：
Journal of the American Chemical Society | 2008年 / 130卷 / 34期
关键词：
In this report; for the first time; a planar chiral photoresponsive compound has been employed in commercially available nematic liquid crystals to achieve phototunable reflection colors. We designed an azobenzenophane compound having conformational restriction on the free rotation of naphthalene moiety to impose an element of planar chirality and the corresponding enantiomers were resolved by HPLC on chiral column. We have determined the absolute configuration by comparison of density functional theory (DFT) calculations of its electronic circular dichroism (ECD) spectrum and specific rotation [α]D to experimental ECD and [α]D data. Enantiomers exhibit photochemically reversible isomerization in solution without undergoing thermal or photoinduced racemization. As chiroptic switches in different host nematic liquid crystals; they exhibit good solubility; moderately high helical twisting power; as well as a large change in helical twisting power due to photoisomerization. A unique feature of these chiral photochromic compounds is that no other auxiliary chiral agents is required to achieve a fast photon mode reversible full-range color control in induced cholesterics; that is; both the hypsochromic and bathochromic shift can be obtained from a single LC formulation by reversible photoisomerization of the single chiral compound. © 2008 American Chemical Society;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：11409 / 11416
相关论文
共 50 条
  • [31] SYNTHESIS OF CHIRAL AZOBENZENES AND INVESTIGATION OF THE CHOLESTERIC PHASES IN NEMATIC LIQUID-CRYSTALS INDUCED BY THEM
    HEPPKE, G
    MARSCHALL, H
    NURNBERG, P
    OESTREICHER, F
    SCHEROWSKY, G
    CHEMISCHE BERICHTE-RECUEIL, 1981, 114 (07): : 2501 - 2518
  • [32] PITCH-INDUCED TRANSITION OF CHIRAL NEMATIC LIQUID-CRYSTALS IN SUBMICROMETER CYLINDRICAL CAVITIES
    ONDRISCRAWFORD, RJ
    AMBROZIC, M
    DOANE, JW
    ZUMER, S
    PHYSICAL REVIEW E, 1994, 50 (06) : 4773 - 4779
  • [33] Electric-field-induced steering in soliton direction of propagation in chiral nematic liquid crystals
    Laudyn, Urszula A.
    Kwasny, Michal
    Karpierz, Miroslaw A.
    OPTICS COMMUNICATIONS, 2010, 283 (07) : 1463 - 1466
  • [34] CHIRAL NEMATIC LIQUID-CRYSTALS IN CYLINDRICAL CAVITIES - A CLASSIFICATION OF PLANAR STRUCTURES AND MODELS OF NONSINGULAR DISCLINATION LINES
    BEZIC, J
    ZUMER, S
    LIQUID CRYSTALS, 1993, 14 (06) : 1695 - 1713
  • [35] Matched elastic constants for a perfect helical planar state and a fast switching time in chiral nematic liquid crystals
    Yu, Meina
    Zhou, Xiaochen
    Jiang, Jinghua
    Yang, Huai
    Yang, Deng-Ke
    SOFT MATTER, 2016, 12 (19) : 4483 - 4488
  • [36] TiO2 nanorod arrays induced broad-band reflection in chiral nematic liquid crystals with photo-polymerization network
    Liu, Yang
    Wang, Dong
    Gao, Hong
    Zhang, Jing-jing
    Tao, Yuan
    Ye, Chen
    He, Wan-li
    Yang, Zhou
    Cao, Hui
    LIQUID CRYSTALS, 2019, 46 (02) : 210 - 218
  • [37] Non-resonant light-induced chirality in non-chiral nematic liquid crystals
    Brasselet, E
    Galstian, TV
    OPTICS COMMUNICATIONS, 2001, 200 (1-6) : 241 - 248
  • [38] Electro-responsive 1-D nanomaterial driven broad-band reflection in chiral nematic liquid crystals
    Liu, Fang
    Wang, Jingjing
    Ge, Zhenhua
    Li, Kexuan
    Ding, Hangjun
    Zhang, Boping
    Wang, Dong
    Yang, Huai
    JOURNAL OF MATERIALS CHEMISTRY C, 2013, 1 (02) : 216 - 219
  • [39] Engineering the Uniform Lying Helical Structure in Chiral Nematic Liquid Crystals: From Morphology Transition to Dimension Control
    Jia, Zhixuan
    Pawale, Tejal
    Guerrero-Garcia, Guillermo, I
    Hashemi, Sid
    Martinez-Gonzalez, Jose A.
    Li, Xiao
    CRYSTALS, 2021, 11 (04):
  • [40] Short helix pitch ferroelectric liquid crystals induced in nematic matrix by chiral non-mesogenic dopants
    Pozhidaev, Evgeny P.
    Budynina, Ekaterina M.
    Kuznetsov, Artemy, V
    Torgova, Sofia I.
    Tkachenko, Timofey P.
    Barbashov, Vadim A.
    JOURNAL OF MOLECULAR LIQUIDS, 2023, 391
12345