Dynamic Diffractive Patterns in Helix-Inverting Cholesteric Liquid Crystals

被引:28
作者
Ryabchun, Alexander [1 ,2 ]
Yakovlev, Dmitry [3 ]
Bobrovsky, Alexey [4 ]
Katsonis, Nathalie [1 ]
机构
[1] Univ Twente, MESA Inst Nanotechnol, Bioinspired & Smart Mat, POB 207, NL-7500 AE Enschede, Netherlands
[2] Fraunhofer Inst Appl Polymer Res, Geiselbergstr 69, D-14476 Potsdam, Germany
[3] Saratov NG Chernyshevskii State Univ, Dept Phys, Astrakhanskaya 83, Saratov 410012, Russia
[4] Moscow MV Lomonosov State Univ, Dept Chem, Lenin Hills 1, Moscow 119991, Russia
基金
俄罗斯基础研究基金会;
关键词
chiral liquid crystals; diffraction gratings; molecular switches; helix inversion; light; POLYMER; LIGHT; CHIRALITY; TEXTURES; GRATINGS; DEFORMATION; DISTORTIONS; INVERSION; STRIPES; LAYERS;
D O I
10.1021/acsami.8b22465
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The future of adaptive materials will rely on transduction of molecular motion across increasing length scales, up to the macroscopic and functional level. In this context, liquid crystals have emerged as a promising amplification medium, in view of their long-range order and high sensitivity to external stimuli, and in particular, chiral liquid crystals have demonstrated widely tunable optical properties and invertible handedness. Here, we demonstrate that by applying weak electric fields, regular, periodic and light-tunable patterns can be formed spontaneously in cholesteric liquid crystals. These patterns can be used as light-tunable diffraction gratings for which the period, the diffraction efficiency, and the in-plane orientation of grating vector can be controlled precisely, reversibly, and independently. Such a photoregulation allows generating a variety of one- and two-dimensional complex diffractive patterns in a single material. Our data are also supported by modeling and theoretical calculations. Overall, the fine tunability of cholesteric materials doped with artificial molecular switches makes them attractive for optics and photonics.
引用
收藏
页码:10895 / 10904
页数:10
相关论文
共 55 条
[1]   High-Power Actuation from Molecular Photoswitches in Enantiomerically Paired Soft Springs [J].
Asshoff, Sarah J. ;
Lancia, Federico ;
Iamsaard, Supitchaya ;
Matt, Benjamin ;
Kudernac, Tibor ;
Fletcher, Stephen P. ;
Katsonis, Nathalie .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2017, 56 (12) :3261-3265
[2]   Stimuli-Driven Control of the Helical Axis of Self-Organized Soft Helical Superstructures [J].
Bisoyi, Hari Krishna ;
Bunning, Timothy J. ;
Li, Quan .
ADVANCED MATERIALS, 2018, 30 (25)
[3]   Light -Driven Liquid Crystalline Materials: From Photo -Induced Phase Transitions and Property Modulations to Applications [J].
Bisoyi, Hari Krishna ;
Li, Quan .
CHEMICAL REVIEWS, 2016, 116 (24) :15089-15166
[4]   Light-Directed Dynamic Chirality Inversion in Functional Self-Organized Helical Superstructures [J].
Bisoyi, Hari Krishna ;
Li, Quan .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2016, 55 (09) :2994-3010
[5]   New azobenzene-based chiral-photochromic substances with thermally stable Z-isomers and their use for the induction of a cholesteric mesophase with a phototunable helix pitch [J].
Bobrovsky, Alexey ;
Ryabchun, Alexander ;
Cigl, Martin ;
Hamplova, Vera ;
Kaspar, Miroslav ;
Hampl, Frantisek ;
Shibaev, Valery .
JOURNAL OF MATERIALS CHEMISTRY C, 2014, 2 (40) :8622-8629
[6]   Making molecular machines work [J].
Browne, Wesley R. ;
Feringa, Ben L. .
NATURE NANOTECHNOLOGY, 2006, 1 (01) :25-35
[7]  
Chen JW, 2018, NAT CHEM, V10, P132, DOI [10.1038/NCHEM.2887, 10.1038/nchem.2887]
[8]  
Chigrinov V.G., 1979, JETP, V50, P994
[9]  
Chilaya G, 2013, CHOLESTERIC LIQUID C, P3
[10]   Great expectations: can artificial molecular machines deliver on their promise? [J].
Coskun, Ali ;
Banaszak, Michal ;
Astumian, R. Dean ;
Stoddart, J. Fraser ;
Grzybowski, Bartosz A. .
CHEMICAL SOCIETY REVIEWS, 2012, 41 (01) :19-30