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Liquid Crystals

Liquid crytals (LCs) are probably the most exciting state of matter. They attract scientists across disciplines such as chemistry, physics, materials science, and engineering—theorists and experimentalists alike. These days, you can buy quite affordable LCD TV sets around the corner, but that's just one of the many things liquid crystals can do. The selection of recent research articles presented below illustrates the broad interest in this area of soft condensed matter.

Recommended Reading

J. W. Goodby, P. J. Collings, T. Kato, C. Tschierske, H. Gleeson, P. Raynes (Eds)
Handbook of Liquid Crystals
2nd edition, Wiley-VCH, Weinheim, 2014.

Find all articles on liquid crystals in Wiley Online Library...

See the International Liquid Crystal Society's website.

Recent Articles

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Polar Liquid Crystals Derived from Sulfonium Zwitterions of the [closo-1-CB11H12] Anion

Polar Liquid Crystals Derived from Sulfonium Zwitterions of the [closo-1-CB11H12]– Anion

Zwitterionic derivatives of the [closo-1-CB11H12] anion form liquid-crystalline phases and improve the dielectric properties of nematic liquid-crystal materials.

[Full Paper]
Jacek Pecyna, Remigiusz Żurawiński, Piotr Kaszyński, Damian Pociecha, Piotr Zagórski, Serhii Pakhomov
Eur. J. Inorg. Chem., April 27, 2016, DOI: 10.1002/ejic.201600240. Read article.

Hexagonal Lyotropic Liquid Crystal from Simple “Abiotic” Foldamers

Hexagonal Lyotropic Liquid Crystal from Simple “Abiotic” Foldamers

Total recoil: A novel foldamer scaffold, in which p-phenyleneethynylene units are linked by chiral carbon atoms, is reported. In very dilute solutions, these oligomers are random coils. The hexamer and octamers form a hexagonal lyotropic liquid crystal in CH2Cl2 when the concentrations reach the critical values.

[Full Paper]
Yu Chen, Zhiqiang Zhao, Zheng Bian, Rizhe Jin, Chuanqing Kang, Xuepeng Qiu, Haiquan Guo, Zhijun Du, Lianxun Gao
ChemistryOpen, April 27, 2016, DOI: 10.1002/open.201600007. Read article

Discogens Possessing Aryl Side Groups Synthesized by Suzuki Coupling of Triphenylene Triflates and Their Self-Organization Behavior

Discogens Possessing Aryl Side Groups Synthesized by Suzuki Coupling of Triphenylene Triflates and Their Self-Organization Behavior

Versatile Suzuki cross-coupling reactions between arylboronic acids and triphenylenyl triflates generate a rich diversity of attractive functional discogens.

[Full Paper]
Ke-Qing Zhao, Yue Gao, Wen-Hao Yu, Ping Hu, Bi-Qin Wang, Benoît Heinrich, Bertrand Donnio
Eur. J. Org. Chem., April 13, 2016, DOI: 10.1002/ejoc.201600270. Read article.

Dual-Responsive Viscoelastic Lyotropic Liquid Crystal Fluids to Control the Diffusion of Hydrophilic and Hydrophobic Molecules

Dual‐Responsive Viscoelastic Lyotropic Liquid Crystal Fluids to Control the Diffusion of Hydrophilic and Hydrophobic Molecules

Unlocking molecule release: A dual-responsive lyotropic liquid crystal system for the controlled release of molecules is reported.

[Article]
Dong Wang, Yueying Cao, Meiwen Cao, Yawei Sun, Jiqian Wang, Jingcheng Hao
ChemPhysChem, April 08, 2016, DOI: 10.1002/cphc.201600066. Read article

Electro-optic switching with liquid crystal graphene

Electro‐optic switching with liquid crystal graphene

Liquid crystal graphene has been realized with a cationic surfactant during the graphene oxide reduction for preventing aggregation of the flakes. The suspension can be electro-optically modulated by applying weak electric fields due to the macroscopic alignment of the graphene flakes along the field direction. The system shows drastically improved birefringence and time stability compared to graphene oxide suspensions.

[Rapid Research Letter]
Min Jae Kim, Ji Hyun Park, Jun Yamamoto, Youn Sang Kim, Giusy Scalia
Phys. Status Solidi RRL, April 05, 2016, DOI: 10.1002/pssr.201600038. Read article

Blue and Green Phosphorescent Liquid-Crystalline Iridium Complexes with High Hole Mobility

Blue and Green Phosphorescent Liquid-Crystalline Iridium Complexes with High Hole Mobility

A simple modular design was used to impart liquid-crystalline properties to iridium complexes without modification of their photophysical properties. Annealed films of the liquid-crystalline complexes display hole mobilities up to three orders of magnitude higher than parent iridium complex without mesogenic groups and are the highest values reported to date for iridium complexes (see figure).

[Communication]
Yafei Wang, Christopher P. Cabry, ManJun Xiao, Louise Male, Stephen J. Cowling, Duncan W. Bruce, Junwei Shi, Weiguo Zhu, Etienne Baranoff
Chem. Eur. J., December 22, 2015, DOI: 10.1002/chem.201504669. Read article.

Robust Room Temperature Hysteresis in an FeIII Spin Crossover Metallomesogen

Robust Room Temperature Hysteresis in an FeIII Spin Crossover Metallomesogen

The high temperature magnetic and structural properties of an amphiphilic iron(III) spin crossover complex are reported. Thermal cycling reveals a scan rate-dependent 20 K thermal hysteresis close to room temperature. Differential scanning calorimetry and cross polarized microscopy are used to show that the magnetic switching aligns with a material change from solid to ordered liquid phase on warming.

[Full Paper]
Anthony J. Fitzpatrick, Paulo N. Martinho, Brendan J. Gildea, John D. Holbrey, Grace G. Morgan
Eur. J. Inorg. Chem., December 16, 2015, DOI: 10.1002/ejic.201501335. Read article.

Chemical Programming of the Domain of Existence of Liquid Crystals

Chemical Programming of the Domain of Existence of Liquid Crystals

Changing states: The cohesive free energy density concept (CFED) is applied to thermotropic cyanobiphenyl-based liquid crystals to establish predictive quantitative correlations between each antagonist segments of the amphiphilic molecules (flexible alkyl tail/rigid aromatic core) and their transition temperatures (solid→liquid crystalline/liquid crystalline→ isotropic liquid; see figure).

[Full Paper]
Thibault Dutronc, Emmanuel Terazzi, Laure Guénée, Kerry-Lee Buchwalder, Sébastien Floquet, Claude Piguet
Chem. Eur. J., December 14, 2015, DOI: 10.1002/chem.201503420. Read article.

Salt-Acid-Surfactant Lyotropic Liquid Crystalline Mesophases: Synthesis of Highly Transparent Mesoporous Calcium Hydroxyapatite Thin Films

Salt-Acid-Surfactant Lyotropic Liquid Crystalline Mesophases: Synthesis of Highly Transparent Mesoporous Calcium Hydroxyapatite Thin Films

Phosphoric acid and calcium nitrate self-assemble into lyotropic liquid crystalline mesophases that can be calcined into sponge-like transparent mesoporous thin films of calcium hydroxyapatite.

[Full Paper]
Ebrima Tunkara, Ömer Dag
Eur. J. Inorg. Chem., December 2, 2015, DOI: 10.1002/ejic.201501116. Read article.

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