Transformation from a rod-like to a hockey-stick-like and bent-shaped molecule in 3,4′-disubstituted azobenzene-based mesogens

被引：24

作者：

Horcic, Martin ^{[1
]}

Kozmik, Vaclav ^{[1
]}

Svoboda, Jiri ^{[1
]}

Novotna, Vladimira ^{[2
]}

Pociecha, Damian ^{[3
]}

机构：

[1] Inst Chem Technol, Dept Organ Chem, CZ-16628 Prague 6, Czech Republic

[2] Acad Sci Czech Republ, Inst Phys, CZ-18221 Prague 8, Czech Republic

[3] Warsaw Univ, Dept Chem, Lab Dielect & Magnet, PL-02089 Warsaw, Poland

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2013年 / 1卷 / 45期

关键词：

CORE LIQUID-CRYSTALS; NONLINEAR-OPTICAL PROPERTIES; SMECTIC-C PHASE; AZO-COMPOUNDS; EXHIBITING B-1; DIRECTION; LINKAGES; LINKING; SMA;

D O I：

10.1039/c3tc31593b

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New 3,4'-disubstituted azobenzene-based mesogens with an azo group joined directly to the central benzene core have been synthesised and their liquid crystalline properties studied. Both molecular arms are gradually elongated by the insertion of a number of benzoate units between the central core and a terminal dodecyloxy chain. Then the lengths of the molecular arms and the overall shape are varied from a rod-like to a hockey-stick-like and bent-shape. Typical bent-shaped mesophases and electro-optical switching can be observed upon reaching a sufficient length of the molecular arms. We demonstrated how the mesoscale organization strictly depends on the molecular shape.

引用

页码：7560 / 7567

页数：8

共 39 条

[1] Baumeister U., 2010, SOFT MATTER, V6, P3883
[2] New hockey stick compounds with a lateral methyl group showing nematic, synclinic and anticlinic smectic C phases
Chakraborty, A.
Das, B.
Das, M. K.
Findeisen-Tandel, S.
Tamba, M. -G.
Baumeister, U.
Kresse, H.
Weissflog, W.
[J]. LIQUID CRYSTALS, 2011, 38 (09) : 1085 - 1097
[3] Polarization splay as the origin of modulation in the B1 and B7 smectic phases of bent-core molecules
Coleman, D. A.
Jones, C. D.
Nakata, M.
Clark, N. A.
Walba, D. M.
Weissflog, W.
Fodor-Csorba, K.
Watanabe, J.
Novotna, V.
Hamplova, V.
[J]. PHYSICAL REVIEW E, 2008, 77 (02):
[4] Structural and conformational investigations in SmA and different SmC phases of new hockey stick-shaped compounds
Das, B
Grande, S
Weissflog, W
Eremin, A
Schröder, MW
Pelzl, G
Diele, S
Kresse, H
[J]. LIQUID CRYSTALS, 2003, 30 (05) : 529 - 539
[5] Achiral bent-core liquid crystals with azo and azoxy linkages: Structural and nonlinear optical properties and photoisomerization
Folcia, C. L.
Alonso, I.
Ortega, J.
Etxebarria, J.
Pintre, I.
Ros, M. B.
[J]. CHEMISTRY OF MATERIALS, 2006, 18 (19) : 4617 - 4626
[6] Polarization periodicity in the B1 columnar phase determined by resonant x-ray scattering
Folcia, C. L.
Ortega, J.
Etxebarria, J.
Pan, LiDong
Wang, Shun
Huang, C. C.
Ponsinet, V.
Barois, P.
Pindak, R.
Gimeno, N.
[J]. PHYSICAL REVIEW E, 2011, 84 (01):
[7] Structural study of a bent-core liquid crystal showing the B1-B2 transition
Folcia, Cesar Luis
Etxebarria, J.
Ortega, J.
Ros, M. B.
[J]. PHYSICAL REVIEW E, 2006, 74 (03):
[8] Communication: Experimental proof of symmetry breaking in tilted smectics composed of molecules with axial chirality
Glogarova, Milada
Hampl, Frantisek
Lejcek, Lubor
Novotna, Vladimira
Svoboda, Jiri
Cigl, Martin
[J]. JOURNAL OF CHEMICAL PHYSICS, 2010, 133 (22)
[9] An optically uniaxial antiferroelectric smectic phase in asymmetrical bent-core compounds containing a 3-aminophenol central unit
Gomola, Kinga
Guo, Lingfeng
Pociecha, Damian
Araoka, Fumito
Ishikawa, Ken
Takezoe, Hideo
[J]. JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (37) : 7944 - 7952
[10] Syntheses and characterization of novel asymmetric bent-core mesogens exhibiting polar smectic phases
Gomola, Kinga
Guo, Lingfeng
Dhara, Surajit
Shimbo, Yoshio
Gorecka, Ewa
Pociecha, Damian
Mieczkowski, Jozef
Takezoe, Hideo
[J]. JOURNAL OF MATERIALS CHEMISTRY, 2009, 19 (24) : 4240 - 4247

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