Metallomesogens: Retrospectives and Perspectives

Kadkin, Oleg N.; Domracheva, N. E.; Ovchinnikov, I V

doi:10.18083/lcappl.2015.4.21

Cited by 4 publications

(2 citation statements)

References 104 publications

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“…A wide variety of metallomesogens has been generated to date using concepts based on coordination, organometallic and supramolecular chemistry. Such a diversity of structures embraces from simple to very sophisticated molecular systems, including one-metal center systems, metal dimer molecules, metal–metal bonded molecules, metallocenes, buckyferrocenes, metallohelicates, metallacrowns, clustomesogens, heteropolymetallic metallomesogens, metallomesogenic polymers, and two-dimensional networks . Mesogens can also be introduced in metal-containing liquid crystals as counterions .…”

Section: Introductionmentioning

confidence: 99%

Designing Supramolecular Liquid-Crystalline Hybrids from Pyrenyl-Containing Dendrimers and Arene Ruthenium Metallacycles

et al. 2014

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The association of the arene ruthenium metallacycle [Ru4(p-cymene)4(bpe)2(donq)2][DOS]4 (bpe = 1,2-bis(4-pyridyl)ethylene, donq = 5,8-dioxydo-1,4-naphtoquinonato, DOS = dodecyl sulfate) with pyrenyl-functionalized poly(arylester) dendrimers bearing cyanobiphenyl end-groups is reported. The supramolecular dendritic systems display mesomorphic properties as revealed by polarized optical microscopy, differential scanning calorimetry and small-angle X-ray scattering measurements. The multicomponent nature of the dendrimers and of the corresponding host-guest supramolecules (i.e., end-group mesogens, dendritic core, pyrene unit, aliphatic spacers, and metallacycle) leads to the formation of highly segregated mesophases with a complex multilayered structure due to the tendency of the various constitutive building-blocks to separate in different organized zones. The pyrenyl dendrimers exhibit a multilayered smectic A-like phase, thereafter referred to as LamSmA phase to emphasize this unaccustomed morphology. As for the corresponding Ru4-metallacycle adducts, they self-organize into a multicontinuous thermotropic cubic phase with the Im3̅m space group symmetry. This represents a unique example of liquid-crystalline behavior observed for such large and complex supramolecular host-guest assemblies. Models of their supramolecular organizations within both mesophases are proposed.

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Section: Introductionmentioning

confidence: 99%

Designing Supramolecular Liquid-Crystalline Hybrids from Pyrenyl-Containing Dendrimers and Arene Ruthenium Metallacycles

et al. 2014

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“…This has inspired many research groups to focus on molecular design and synthesis of new examples of heteropolynuclear metallomesogens [18][19][20][21][22]. bdiketones incorporating transition metals have been extensively studied due to their easier preparation, as well as known chemistries and/or rich structural varieties.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical and liquid crystal properties of ferrocene-based β-diketonato copper(II) and zinc(II) complexes

Liu

Zhao

et al. 2015

Res Chem Intermed

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Heterometallic liquid crystals are of special interest because of the possibility to combine optical, magnetic and electric properties of different metal ions in one mesogenic molecule. In order to investigate new heteropolynuclear mesogenic systems, the long-chain alkyl bromophenyl ferrocenyl b-diketones and their copper(II) and zinc(II) complexes were synthesized and characterized. The X-ray crystal structure reveals that b-diketone ligands exist in the enol isomer form in the crystals. These compounds exhibited good absorption and electrochemical properties. The complexes showed high thermal stability. According to thermal polarizing microscopy and differential scanning calorimetry studies, all complexes display liquid crystal behaviours. The zinc(II) complexes display lower melting point and clear point as well as a wide mesophase range compared with the copper(II) complexes. The obtained metallomesogens are important footsteps toward the development of liquid crystal materials possessing heteropolynuclear, good redox activity and chemically stable ferrocene unit.

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Magnetocaloric behaviour of liquid crystalline symmetric Co(II) and Ni(II) complexes of poly(propylene imine) dendrimers of the second generation

Груздев

Ramazanova

Korolev

et al. 2023

Journal of Molecular Liquids

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Metallomesogens: Retrospectives and Perspectives

Cited by 4 publications

References 104 publications

Designing Supramolecular Liquid-Crystalline Hybrids from Pyrenyl-Containing Dendrimers and Arene Ruthenium Metallacycles

Designing Supramolecular Liquid-Crystalline Hybrids from Pyrenyl-Containing Dendrimers and Arene Ruthenium Metallacycles

Electrochemical and liquid crystal properties of ferrocene-based β-diketonato copper(II) and zinc(II) complexes

Magnetocaloric behaviour of liquid crystalline symmetric Co(II) and Ni(II) complexes of poly(propylene imine) dendrimers of the second generation

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