Metallotropic liquid crystals formed by surfactant templating of molten metal halides

  title={Metallotropic liquid crystals formed by surfactant templating of molten metal halides},
  author={James D. Martin and Cristin L. Keary and Todd A. Thornton and Mark P Novotnak and Jeremey W Knutson and Jacob C. W. Folmer},
  journal={Nature Materials},
Liquid crystals consist of anisotropic molecular units, and most are organic molecules. Materials incorporating metals into anisotropic molecules, described as metallomesogens, have been prepared1. Anisotropic structures such as one-dimensional chains and two-dimensional layers are frequently observed in solid-state inorganic materials, however, little is understood about structural organization in melts of such materials. Achieving liquid-crystalline behaviour in inorganic fluids should be… 
Crystalline and liquid structure of zinc chloride trihydrate: a unique ionic liquid.
The water/ZnCl(2) phase diagram in the vicinity of the 75 mol % water composition is reported, demonstrating the existence of a congruently melting phase and a novel nonpolar, hydrogen-bonding, ionic liquid solvent.
Ionic-surfactants-based thermotropic liquid crystals.
This review has discussed the TLCs formed by salt-free catanionic surfactant and ionic surfactants with other functional groups, including metal ions, nanoclusters, biomolecules, and polyelectrolytes, and the design of such TLC molecules, the influencing factors of the mesophases, and their related applications are discussed in detail.
Dynamics and ionic conductivity of ionic liquid crystals forming a hexagonal columnar mesophase.
Electric conductivity is detected and an increase in the DC conductivity by four orders of magnitude at the phase transition from the plastic crystalline to the hexagonal columnar mesophase is found, traced to a change in the charge transport mechanism from a delocalized electron hopping in the stacked aromatic systems to one dominated by an ionic conduction in the quasi-1D ion channels formed along the supermolecular columns in the ILC hexagonal mesophases.
Ionic Liquid Crystals: Versatile Materials.
The discussion is focused on low molar mass and dendrimeric thermotropic ionic mesogens, as well as selected metal-containing compounds (metallomesogens), but some references to polymeric and/or lyotropic ionIC liquid crystals and particularly to ionic liquids will also be provided.
Inorganic–Organic Hybrid Surfactant Crystals: Structural Aspects and Functions
Hybrid single crystals consisting of an organic surfactant and an inorganic moiety are promising functional materials. Layered crystals composed from alternate inorganic and surfactant layers are
Ultrathin 2D coordination polymer nanosheets by surfactant-mediated synthesis.
The scalable, bottom-up synthesis of ultrathin coordination polymer nanosheets via surfactant-mediated synthesis and subsequent exfoliation is reported on, revealing a high level of order on both the atomic and mesoscale, suggesting fairly strong interactions along the organic-inorganic hybrid interface.
Assembly of Lyotropic Liquid Crystals with Solid Crystal's Structural Order Translated from the Lipid Rafts in Cell Membranes.
  • Yoon Seob Lee
  • Chemistry, Materials Science
    Journal of the American Chemical Society
  • 2017
This finding demonstrates that it is possible to translate the key features of cellular processes and functions into artificial self-assembling systems of the authors' choice using the building units that are readily available, thus creating novel soft materials.
New nanostructured zinc phosphite templated by cetyltrimethylammonium cations: synthesis, crystal structure, adsorption, and photoluminescence properties.
This first example of a crystalline metal phosphite containing long carbon tails of the CTA(+) ions as templates in its structure, as is structurally characterized by single-crystal X-ray diffraction, has potential as an adsorbent for the removal of 1-naphthol pollutants from wastewater.
Halometallate ionic liquids--revisited.
The experimental techniques that can be applied to study and characterise the anion speciation in these ionic liquids are reviewed and, using recent examples, how their applications base is evolving beyond traditional applications in Lewis acidic catalysis and electrochemistry is illustrated.
Liquid crystaline system is a thermodynamically stable phase which is characterized by anisotropy. LC’s are also termed as mesophase as they exhibit isotropic properties and fluid-like behavior under


Semiconductor Nanorod Liquid Crystals
Rodlike molecules form liquid crystalline phases with orientational order and positional disorder. The great majority of materials in which liquid crystalline phases have been observed are comprised
Non-conventional liquid crystals—the importance of micro-segregation for self-organisation
Selected examples of recently synthesised non-conventional liquid crystals are highlighted. These are cyclic and open chain oligoamides, molecules containing tetrahedral or octahedral central cores,
Ordered mesoporous molecular sieves synthesized by a liquid-crystal template mechanism
MICROPOROUS and mesoporous inorganic solids (with pore diameters of ≤20 Å and ∼20–500 Å respectively)1 have found great utility as catalysts and sorption media because of their large internal surface
Alkaline Lyotropic Silicate−Surfactant Liquid Crystals
Multinuclear (2H, 13C, 29Si, 81Br) magnetic resonance spectroscopy, small-angle X-ray scattering, and polarized optical microscopy techniques have been used to investigate molecular and mesoscopic
Tin(IV) sulfide–alkylamine composite mesophase: a new class of thermotropic liquid crystals
The synthesis, structural characterization, thermal, electronic, optical birefringence and electrical properties of a new class of semiconducting tin sulfide based thermotropic liquid crystals (LCs),
Novel Class of Ionic Metallomesogens without Organic Ligands: Thermotropic Liquid-Crystalline Behavior of Tetrachlorometalate Salts and Distinct Polymorphic Transition in Smectic A Phases
The thermotropic liquid-crystalline behavior of the metal complex salts [(C18H37)(CH3)3N]2[MCl4] and [(C18H37)2(CH3)2N]2[MCl4] (M = Co, Ni, Cu, Zn, Cd) was evaluated by differential scanning
Ionic liquid crystals: hexafluorophosphate salts
A series of novel hexafluorophosphate salts, based on N,N′-dialkylimidazolium and substituted N-alkylpyridinium cations, display liquid crystalline behaviour at temperatures above their melting
Designing intermediate-range order in amorphous materials
Using crystalline models, principles of crystal engineering are employed to design specific patterns of intermediate-range order within amorphous zinc-chloride networks to provide the structure/property relationships necessary to tailor specific optical, electronic and mechanical properties.
Definitions of basic terms relating to low-molar-mass and polymer liquid crystals (IUPAC Recommendations 2001)
Abstract This document is the first published by the IUPAC Commission on Macromolecular Nomenclature dealing specifically with liquid crystals. Because of the breadth of its scope, it has been
Calamitics, cubics, and columnars-liquid-crystalline complexes of silver(I).
  • D. Bruce
  • Chemistry
    Accounts of chemical research
  • 2000
This Account considers alkoxystilbazole complexes of various silver(I) salts, which show an incredibly rich and diverse mesomorphism ranging from nematic and smectic to columnar phases; in particular, many complexes show the still rare thermotropic cubic phase.