Ytterbium metal polymers as precursors of luminescent materials emitting in the near infrared region

Ivakha, Nadiia; Savchenko, I. A.; Berezhnytska, Оleksandra; Русакова, Н. В.; Trunova, Elena

doi:10.1007/s13204-020-01342-w

Cited by 5 publications

(4 citation statements)

References 17 publications

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“…3). Thus, based on the results of the study and drawing an analogy with the previously studied metal complexes [20,21], we can conclude that the coordination polyhedron of the polymer unit is a square antiprism: R=-CH(CH 3 ) 2 ; -CH 2 CH(CH 3 ) 2. As is known, ytterbium complexes are capable of exhibiting 4-f luminescence in the near IR range.…”

Section: Inorganic Chemistrysupporting

confidence: 58%

INVESTIGATION OF NEW POLYMER COMPLEXES BASED ON Yb(III) β-DIKETONATES

Ivakha¹,

Berezhnytska²,

Rohovtsov³

et al. 2022

Ukr. Chem. Journ.

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The metal polymers based on mono- and heteroligand β-diketonate complexes of Yb(III) with 2,7-dimethyl-octen-1-dione-3,5, 2,6-dimethyl-heptene-1-dione-3, 5 and with phenanthroline was synthesized. It has been defined that the coordination environment of the central ion remains unchanged during radical polymerization. The shape and position of the bands in the electronic absorption spectra are similar to the corresponding monomeric β-diketonate metal complexes, and slight shifts indicate deformation of the elementary unit of the metal polymer during the formation of the polymer chain. It is shown that the polymerization process lead to an increasing in the thermal stability of polymer complexes in comparison with monomeric analogues. An increase in the emission of metal polymers in comparison with monomeric complexes was established by the method of luminescent spectroscopy, which is due to energy, steric, and structural-mechanical factors.

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Section: Inorganic Chemistrysupporting

confidence: 58%

INVESTIGATION OF NEW POLYMER COMPLEXES BASED ON Yb(III) β-DIKETONATES

Ivakha¹,

Berezhnytska²,

Rohovtsov³

et al. 2022

Ukr. Chem. Journ.

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“…Macromolecules containing transition metals are promising candidates for the development of new materials due to the metal center, which imparts several functional properties to the polymer, such as being optical, catalytic, magnetic, self-healing, etc. [150][151][152][153][154][155][156][157][158], due to which metallopolymers are widely used as polymeric LEDs, catalysts, magnetic, luminescent and sensor materials, drug delivery systems, and in other biomedical applications [159][160][161][162].…”

Section: Self-healing Metallopolymersmentioning

confidence: 99%

Self-Healing of Polymers and Polymer Composites

2022

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This review is devoted to the description of methods for the self-healing of polymers, polymer composites, and coatings. The self-healing of damages that occur during the operation of the corresponding structures makes it possible to extend the service life of the latter, and in this case, the problem of saving non-renewable resources is simultaneously solved. Two strategies are considered: (a) creating reversible crosslinks in the thermoplastic and (b) introducing a healing agent into cracks. Bond exchange reactions in network polymers (a) proceed as a dissociative process, in which crosslinks are split into their constituent reactive fragments with subsequent regeneration, or as an associative process, the limiting stage of which is the interaction of the reactive end group and the crosslink. The latter process is implemented in vitrimers. Strategy (b) is associated with the use of containers (hollow glass fibers, capsules, microvessels) that burst under the action of a crack. Particular attention is paid to self-healing processes in metallopolymer systems.

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“…Based on these data, a study of the luminescent properties of all synthesized monoligand and mixed ligand complexes of ytterbium with phenanthroline was performed. It is appropriate to compare the luminescent properties of the synthesized complexes with aliphatic substituents (dmhpd, dmod) and aromatic (mphpd) [17,18] in the molecule of β-diketone. The emission excitation spectra of the powders (Fig.…”

Section: Introductionmentioning

confidence: 99%

MONO- AND MIXED- LIGAND COMPLEXES OF Yb(III) WITH NEW β-DIKETONES

Ivakha¹,

Berezhnytska²,

Rohovtsov³

et al. 2021

Ukr. Chem. Journ.

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New ytterbium (III) compounds with β-diketones (2,7-dimethyl-octene-1-dione-3,5 and 2,6-dimethylheptene-1-dione-3,5) and their derivatives with phenanthroline have been synthesized. The composition and chemical structure of the obtained complexes have been determined by several Physico-chemical investigations. It has been shown, that the Yb (III) ion coordinates three ligand molecules and the coordination sphere of the complexes is supplemented by two molecules of water or a molecule of phenanthroline. It has been shown that the СN of the ytterbium ion is 8, the coordination polyhedron is a square antiprism, and the complex is characterized by no cubic symmetry. All synthesized compounds exhibit intense IR luminescence. The significant increase in the relative emission intensity of mixed ligand complexes is due to the additional antenna effect of the phenanthroline molecule.

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Ytterbium metal polymers as precursors of luminescent materials emitting in the near infrared region

Cited by 5 publications

References 17 publications

INVESTIGATION OF NEW POLYMER COMPLEXES BASED ON Yb(III) β-DIKETONATES

INVESTIGATION OF NEW POLYMER COMPLEXES BASED ON Yb(III) β-DIKETONATES

Self-Healing of Polymers and Polymer Composites

MONO- AND MIXED- LIGAND COMPLEXES OF Yb(III) WITH NEW β-DIKETONES

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