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
  • [1] Planar chiral azobenzenophanes as chiroptic switches for photon mode reversible reflection color control in induced chiral nematic liquid crystals
    Mathews, Manoj
    Tamaoki, Nobuyuki
    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (34) : 11409 - 11416
  • [2] Electrically Tunable Reflection Color of Chiral Ferroelectric Nematic Liquid Crystals
    Feng, Chenrun
    Saha, Rony
    Korblova, Eva
    Walba, David
    Sprunt, Samuel N.
    Jakli, Antal
    ADVANCED OPTICAL MATERIALS, 2021, 9 (22)
  • [3] Broadband reflection of polymer-stabilized chiral nematic liquid crystals induced by a chiral azobenzene compound
    Chen, Xingwu
    Wang, Ling
    Chen, Yinjie
    Li, Chenyue
    Hou, Guoyan
    Liu, Xin
    Zhang, Xiaoguang
    He, Wanli
    Yang, Huai
    CHEMICAL COMMUNICATIONS, 2014, 50 (06) : 691 - 694
  • [4] Surface driven reflection tuning in chiral nematic liquid crystals
    de Souza, R. F.
    Lenzi, E. K.
    Evangelista, L. R.
    Martins, F.
    Zola, R. S.
    OPTICS AND LASER TECHNOLOGY, 2019, 120
  • [5] Reversible color switching from blue to red in a polymer stabilized chiral nematic liquid crystals
    Chen, Jing
    Morris, Stephen M.
    Wilkinson, Timothy D.
    Coles, Harry J.
    APPLIED PHYSICS LETTERS, 2007, 91 (12)
  • [6] Light induced waveguide in chiral nematic liquid crystals
    Laudyn, Urszula A.
    Sala, Filip A.
    Rutkowska, Katarzyna A.
    Sierakowski, Marek
    Karpierz, Miroslaw A.
    2012 PHOTONICS GLOBAL CONFERENCE (PGC), 2012,
  • [7] Optically reconfigurable color change in chiral nematic liquid crystals based on indolylfulgide chiral dopants
    White, Timothy J.
    Zhao, Aaron D.
    Cazzell, Seth A.
    Bunning, Timothy J.
    Kosa, Tamas
    Sukhomlinova, Ludmilla
    Smith, Timothy J.
    Taheri, Bahman
    JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (12) : 5751 - 5757
  • [8] DERACEMIZATION OF NEMATIC LIQUID-CRYSTALS, INDUCED BY CHIRAL DOPANTS
    GERASIMOV, AA
    SHIYANOVSKY, SV
    UKRAINSKII FIZICHESKII ZHURNAL, 1989, 34 (10): : 1527 - 1529
  • [9] Pitch gradient induced by disklike chiral molecular diffusion in chiral-nematic liquid crystals
    Cui, Xiaopeng
    Huang, Qi
    Liu, Tao
    Cao, Hui
    Liu, Qing
    Yang, Zhou
    Yang, Huai
    JOURNAL OF APPLIED PHYSICS, 2010, 107 (06)
  • [10] Direct Visualization of Chiral Amplification of Chiral Aggregation Induced Emission Molecules in Nematic Liquid Crystals
    Xia, Qing
    Meng, Luming
    He, Tingchao
    Huang, Guangxi
    Li, Bing Shi
    Tang, Ben Zhong
    ACS NANO, 2021, 15 (03) : 4956 - 4966
12345