The synthesis of liquid crystalline lanthanide complexes and their magnetic birefringence

Galyametdinov, Yu. G.; Иванова, Г. В.; Prosvirin, Andrey V.; Kadkin, Oleg N.

doi:10.1007/bf01558051

Cited by 25 publications

(22 citation statements)

References 3 publications

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“…The complexes were shown to exhibit a highly viscous SmA mesophase. Since then a large number of lanthanidomesogens containing Schiff bases,8a, e–g, h, 10c, e–f, 12 porphyrins,13 phthalocyanines,14 β‐enamino ketones,15 1,2‐phenanthrolines,16 β‐diketonates,17 and crown ethers10a, 18 have been investigated. A series of one‐ring Schiff bases, although not mesogenic, have been complexed to lanthanides to produce ordered mesophases 8h.…”

Section: Introductionmentioning

confidence: 99%

Tunable Emissive Lanthanidomesogen Derived from a Room‐Temperature Liquid‐Crystalline Schiff‐Base Ligand

Pramanik

Das

Bhattacharjee

et al. 2013

Chemistry A European J

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A novel photoluminescent room-temperature liquid-crystalline salicylaldimine Schiff base with a short alkoxy substituent and a series of lanthanide(III) complexes of the type [Ln(LH)3(NO3)3] (Ln = La, Pr, Sm, Gd, Tb, Dy; LH = (E)-5-(hexyloxy)-2-[{2-(2-hydroxyethylamino)ethylimino]methyl}phenol) have been synthesized and characterized by FTIR, (1)H and (13)C NMR, UV/Vis, and FAB-MS analyses. The ligand coordinates to the metal ions in its zwitterionic form. The thermal behavior of the compounds was investigated by polarizing optical microscopy (POM) and differential scanning calorimetry (DSC). The ligand exhibits an enantiotropic hexagonal columnar (Col(h)) mesophase at room temperature and the complexes show an enantiotropic lamellar columnar (Col(L)) phase at around 120 °C with high thermal stability. Based on XRD results, different space-filling models have been proposed for the ligand and complexes to account for the columnar mesomorphism. The ligand exhibits intense blue emission both in solution and in the condensed state. The most intense emissions were observed for the samarium and terbium complexes, with the samarium complex glowing with a bright-orange light (ca. 560-644 nm) and the terbium complex emitting green light (ca. 490-622 nm) upon UV irradiation. DFT calculations performed by using the DMol3 program at the BLYP/DNP level of theory revealed a nine-coordinate structure for the lanthanide complexes.

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Section: Introductionmentioning

confidence: 99%

Tunable Emissive Lanthanidomesogen Derived from a Room‐Temperature Liquid‐Crystalline Schiff‐Base Ligand

Pramanik

Das

Bhattacharjee

et al. 2013

Chemistry A European J

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“…As an example, the Schiff base met- allomesogens 150 (Fig. 150) [131] are shown; a series of other achievements of this research group in this area is reported in [132][133][134][135][136][137][138][139][140][141][142][143][144][145][146][147]. o-Cyclopalladates, such as the cyclopalladated azomethines 151 (Fig.…”

Section: Liquid Crystalsmentioning

confidence: 99%

“…151), belong to a special, most researched group of these compounds [127]. The metallomesogenes [127,[132][133][134][135][136][137][138][139][140][141][142][143][144][145][146][147] include also the lanthanide complexes of ␤-ketoenamines 152 (Fig. 152) [148][149][150].…”

Section: Liquid Crystalsmentioning

confidence: 99%

Coordination motifs in modern supramolecular chemistry

Alexeev

Kharisov

García

et al. 2010

Coordination Chemistry Reviews

117

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“…Recently a number of works devoted to synthesis of lanthanide complexes with liquid crystal properties have appeared [1][2][3]. One of the approaches to the production of new hybrid metal-mesogenic systems containing metal atoms, clusters and their complexes, is cryochemical synthesis.…”

Section: Introductionmentioning

confidence: 99%

Metastable Lanthanide Complex Formation and their Thermal Behavior in the Solid State with Alkylcyanobiphenyls

Шабатина

Konyukhov

Ermilov

et al. 2005

Molecular Crystals and Liquid Crystals

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The formation of two metastable complexes (M=L ¼ 1=2 and 1=1) is shown for low temperature co-condensates of europium and samarium vapors with mesogenic ligand 4-penthyl-4 0 -cyanobiphenyl (5CB). The DFT-calculations based on hybrid B3LYP potential have been carried out to study the equilibrium structures of complexes. The model structures including one and two metal atoms with antiparallel disposition of ligand molecules are considered. The spectral shifts for ligand CNgroup stretching vibrations and the relative thermal stability of the complexes are discussed.

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The synthesis of liquid crystalline lanthanide complexes and their magnetic birefringence

Cited by 25 publications

References 3 publications

Tunable Emissive Lanthanidomesogen Derived from a Room‐Temperature Liquid‐Crystalline Schiff‐Base Ligand

Tunable Emissive Lanthanidomesogen Derived from a Room‐Temperature Liquid‐Crystalline Schiff‐Base Ligand

Coordination motifs in modern supramolecular chemistry

Metastable Lanthanide Complex Formation and their Thermal Behavior in the Solid State with Alkylcyanobiphenyls

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