Controlling spontaneous chirality in achiral materials: liquid crystal oligomers and the heliconical twist-bend nematic phase

被引：26

作者：

Majewska, M. M. ^{[1
]}

Forsyth, E. ^{[2
]}

Pociecha, D. ^{[1
]}

Wang, C. ^{[3
]}

Storey, J. M. D. ^{[2
]}

Imrie, C. T. ^{[2
]}

Gorecka, E. ^{[1
]}

机构：

[1] Univ Warsaw, Fac Chem, Ul Zwirki & Wigury 101, PL-02089 Warsaw, Poland

[2] Univ Aberdeen, Sch Nat & Comp Sci, Dept Chem, Meston Bldg, Aberdeen AB24 3UE, Scotland

[3] LBNL, Adv Light Source, Berkeley, CA 94720 USA

来源：

CHEMICAL COMMUNICATIONS | 2022年 / 58卷 / 34期

关键词：

SYMMETRY-BREAKING; TRIMERS; DIMERS;

D O I：

10.1039/d1cc07012f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Liquid crystal oligomers, namely dimers, trimers and tetramers, consisting of cyanobiphenyl and benzylideneaniline-based mesogenic units connected by either linear or bent alkoxy or alkyl spacers are reported. These materials, although built from achiral molecules, show the spontaneously chiral heliconical twist-bend nematic (N-TB) phase. We report the relationships between the shape of the oligomer, and the N-TB phase stability, the temperature dependence of the helical pitch length and tilt angle, birefringence, and elastic constants.

引用

页码：5285 / 5288

页数：4

共 34 条

[1] Heliconical smectic phases formed by achiral molecules
Abberley, Jordan P.
Killah, Ross
Walker, Rebecca
Storey, John M. D.
Imrie, Corrie T.
Salamonczyk, Miroslaw
Zhu, Chenhui
Gorecka, Ewa
Pociecha, Damian
[J]. NATURE COMMUNICATIONS, 2018, 9
[2] Isomeric trimesogens exhibiting modulated nematic mesophases
Al-Janabi, Adam
Mandle, Richard J.
Goodby, John W.
[J]. RSC ADVANCES, 2017, 7 (75): : 47235 - 47242
[3] [Anonymous], 2018, ANGEW CHEM, V130, P7214
[4] Phase behaviors of classic liquid crystal dimers and trimers: Alternate induction of smectic and twist-bend nematic phases depending on spacer parity for liquid crystal trimers
Arakawa, Yuki
Komatsu, Kenta
Shiba, Takuma
Tsuji, Hideto
[J]. JOURNAL OF MOLECULAR LIQUIDS, 2021, 326
[5] Thioether-linked liquid crystal dimers and trimers: The twist-bend nematic phase
Arakawa, Yuki
Komatsu, Kenta
Inui, Satoyoshi
Tsuji, Hideto
[J]. JOURNAL OF MOLECULAR STRUCTURE, 2020, 1199
[6] Elastic and electro-optical properties of flexible fluorinated dimers with negative dielectric anisotropy
Babakhanova, Greta
Wang, Hao
Rajabi, Mojtaba
Li, David
Li, Quan
Lavrentovich, Oleg D.
[J]. LIQUID CRYSTALS, 2022, 49 (7-9) : 982 - 994
[7] Nematic twist-bend phase with nanoscale modulation of molecular orientation
Borshch, V.
Kim, Y. -K.
Xiang, J.
Gao, M.
Jakli, A.
Panov, V. P.
Vij, J. K.
Imrie, C. T.
Tamba, M. G.
Mehl, G. H.
Lavrentovich, O. D.
[J]. NATURE COMMUNICATIONS, 2013, 4
[8] Spontaneous Deracemizations
Buhse, Thomas
Cruz, Jose-Manuel
Noble-Teran, Maria E.
Hochberg, David
Ribo, Josep M.
Crusats, Joaquim
Micheau, Jean-Claude
[J]. CHEMICAL REVIEWS, 2021, 121 (04) : 2147 - 2229
[9] Phase behavior and properties of the liquid-crystal dimer 1",7"-bis(4-cyanobiphenyl-4′- yl) heptane: A twist-bend nematic liquid crystal
Cestari, M.
Diez-Berart, S.
Dunmur, D. A.
Ferrarini, A.
de la Fuente, M. R.
Jackson, D. J. B.
Lopez, D. O.
Luckhurst, G. R.
Perez-Jubindo, M. A.
Richardson, R. M.
Salud, J.
Timimi, B. A.
Zimmermann, H.
[J]. PHYSICAL REVIEW E, 2011, 84 (03)
[10] Chiral heliconical ground state of nanoscale pitch in a nematic liquid crystal of achiral molecular dimers
Chen, Dong
Porada, Jan H.
Hooper, Justin B.
Klittnick, Arthur
Shen, Yongqiang
Tuchband, Michael R.
Korblova, Eva
Bedrov, Dmitry
Walba, David M.
Glaser, Matthew A.
Maclennan, Joseph E.
Clark, Noel A.
[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2013, 110 (40) : 15931 - 15936

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