Journal Article10.1080/02678290600633485
Mesomorphism of complexed 2,6‐disubstituted pyridine ligands: crystal and molecular structure of two bent‐core pyridines
Mari Carmen Torralba,Deborah M. Huck,H. Loc Nguyen,Peter N. Horton,Bertrand Donnio,Michael B. Hursthouse,Duncan W. Bruce +6 more
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TL;DR: In this paper, the Siegrist coupling of di− and tri−alkoxybenzylidene fragments with 2,6dimethylpyridine was used to synthesize polycatenar pyridines.
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Abstract: Bent‐core, polycatenar pyridines are reported, synthesized via a Siegrist coupling of di‐ and tri‐alkoxybenzylidene fragments with 2,6‐dimethylpyridine. None of these pyridines was liquid crystalline. Isomeric materials based on a 3,5‐disubstituted pyridine core were mesomorphic in hydrogen‐bonded complexes, whereas these new materials were not. However, the new pyridines did form mesomorphic metal complexes with silver salts. Some insight into this behaviour is gleaned from single crystal structure determinations of the model systems, 3,5‐bis(3′,4′‐dimethoxystyryl)pyridine and 2,6‐bis(3′,4′‐dimethoxystyryl)pyridine.
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Citations
Discotic Liquid Crystals: From Tailor-Made Synthesis to Plastic Electronics
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Heterocyclic benzothiazole-based liquid crystals: synthesis and mesomorphic properties
Sie-Tiong Ha,Teck Ming Koh,Hong-Cheu Lin,Guan-Yeow Yeap,Yip Foo Win,Siew Teng Ong,Yasodha Sivasothy,Lay Khoon Ong +7 more
TL;DR: In this article, two homologous series of 2-(4-alkanoyloxybenzylidenamino)benzothiazoles and 2-(2-hydroxy-4alkaneyloxy-4-hexadecanoloxybenziels) were synthesized and characterised, where the latter comprised a lateral hydroxyl group, unlike the former.
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Coordination‐Driven Hierarchical Organization of π‐Conjugated Systems: From Molecular to Supramolecular π‐Stacked Assemblies
TL;DR: X-ray diffraction studies revealed that the metallocyclophanes based on linear linkers self-organize into infinite pi-stacked columns in the solid state with intermolecular distances of about 3.6 A.
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Silver Pyrazolates as Coordination‐Polymer Luminescent Metallomesogens
Joaquín Barberá,Ignacio Lantero,Sandra Moyano,José Luis Serrano,José Luis Serrano,Anabel Elduque,Raquel Giménez +6 more
TL;DR: The compounds described here are the first examples of luminescent metallomesogens formed by a main-chain coordination polymer.
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Dissymmetrical U‐Shaped π‐Stacked Supramolecular Assemblies by Using a Dinuclear CuI Clip with Organophosphorus Ligands and Monotopic Fully π‐Conjugated Ligands
Mehdi Elsayed Moussa,Kevin Guillois,Wenting Shen,Régis Réau,Jeanne Crassous,Christophe Lescop +5 more
TL;DR: These results demonstrate that the dinuclear molecular clip A that bears short metal-metal distances allows selective supramolecular assembly processes driven by the formation of intra- and intermolecular short π-π interactions in the resulting self-assembled structures; thus, demonstrating that their shape is not only dictated by the symmetry of the building blocks.
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The synthesis, mesomorphism, and characterization by X-ray diffraction and freeze-fracture electron microscopy of polycatenar liquid crystals of silver(I) showing columnar and cubic mesophases
Bertrand Donnio,Benoît Heinrich,Thaddée Gulik-Krzywicki,Hervé Delacroix,Daniel Guillon,Duncan W. Bruce +5 more
TL;DR: In this article, a combination of optical microscopy, differential scanning calorimetry, X-ray diffraction and freeze-fracture electron microscopy was used to identify the symmetry of the cubic phase as Ia3d.
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Electronic Hyperpolarisabilities of Some Mesogenic Stilbazole Complexes of Rh(I) and Ir(I)
Duncan W. Bruce,Anna Thornton +1 more
TL;DR: In this paper, the electronic hyperpolarisabilities of a chiral 4-alkoxystilbazole and its complexes with Rh(I) and Ir(I), were discussed in terms of the acceptor properties of the metal fragment.
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