The New Nanosized Systems on the Basis Eu(III) Complexes as Precursors for Organic Electroluminescent Diodes

Berezhnytska, Оleksandra; Savchenko, I. A.; Denysova, Z.; Русакова, Н. В.; Fedorov, Yaroslav; Veligura, L. I.; Rogovtsov, Oleksandr; Trunova, Elena

doi:10.1080/15421406.2013.873848

Cited by 13 publications

(6 citation statements)

References 12 publications

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“…In general, the energy of the resonance level of the metal should be somewhat lower than the energy of the triplet level of the ligand, which neutralizes the nonradiative deactivation of the resonance level together with a high probability and efficiency of the emitting transition. The overwhelming majority of studies in this area are on lanthanide complexes emitting in the visible region of the spectrum, in particular, Eu(III), Tb(III), Sm(III), Nd(III), Yb(III) [12,20,[22][23][24][25][26]. Although dysprosium compounds (III) are also capable of emitting in the visible region of the spectrum, such studies are limited due to the complexity of the ligand selection.…”

Section: Introductionmentioning

confidence: 99%

THE COORDINATION COMPOUNDS Gd (III) AND Dy(III) WITH SOME β-DIKETONES

Berezhnytska¹,

Rohovtsov²,

Horbenko³

et al. 2021

Ukr. Chem. Journ.

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New complexes of Dy (III) and Gd (III) with b-diketones containing unsaturated and aryl substituents were synthesized. Metal polymers based on synthesized complexes were obtained by the method of radical polymerization. The composition and structure of synthesized complexes and metal polymers are established. It is shown that during polymerization the coordination environment of the central ion remains unchanged. The spectral-luminescent characteristics of the synthesized compounds were studied. The presence of water molecules in the immediate coordination environment causes a low intensity of emission of monomeric dysprosium complexes. In the luminescence spectra of metal polymers, there are bands magnetic dipole transition (4F9 → 6H15/2) and electric dipole transition (4F9 → 6H13/2). The close energies of the triplet level of the ligand and the resonant level of the dysprosium ion cause low emission characteristics of the synthesized dysprosium complexes.

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Section: Introductionmentioning

confidence: 99%

THE COORDINATION COMPOUNDS Gd (III) AND Dy(III) WITH SOME β-DIKETONES

Berezhnytska¹,

Rohovtsov²,

Horbenko³

et al. 2021

Ukr. Chem. Journ.

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“…This trend can be explained by the fact that organic semiconductors seem to be promising material for use as an active layer in optoelectronic devices, namely: field-effect transistors, LEDs, and photocells [1][2][3]. Materials based on β-diketones, their derivatives, and coordination compounds for these devices are mainly used in the form of thin-film structures from successively deposited layers of the studied materials [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Conductivity of molecular semiconductor material based on monomeric and polymeric methacroylacetophenone

Berezhnytska¹,

prospect²

2019

Semicond. phys. quantum electr. optoelectron

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The method of impedance spectroscopy was used to study the conductivity of the films of sodium salt of 2-methyl-5-phenylpenten-2-3-5-dione (Namphрd) and polymer based on it that were prepared using drip application from various solvents. It was shown that the use of different solvents when applying films from solutions allows to obtain materials with different types of conductivity due to the specific solvation of the materials.

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“…This process is called lanthanide luminescence sensitization or antenna effect [14][15][16]. These chelates possessing the effective emission in the near-UV, visible, and NIR spectral regions are of great interest for a wide range of optical applications, such as tunable lasers, amplifiers for optical communications, components of the emitter layers in multilayer organic lightemitting diodes, light concentrators for photovoltaic devices, and so on [17][18][19][20].…”

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confidence: 99%