Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Heteroleptic β-diketonate Ln(iii) complexes decorated with pyridyl substituted pyridazine ligands : Synthesis, structure and luminescence properties. / Khistiaeva, Viktoria V.; Melnikov, Alexey S.; Slavova, Sofia O.; Sizov, Vladimir V.; Starova, Galina L.; Koshevoy, Igor O.; Grachova, Elena V.
в: Inorganic Chemistry Frontiers, Том 5, № 12, 01.12.2018, стр. 3015-3027.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Heteroleptic β-diketonate Ln(iii) complexes decorated with pyridyl substituted pyridazine ligands
T2 - Synthesis, structure and luminescence properties
AU - Khistiaeva, Viktoria V.
AU - Melnikov, Alexey S.
AU - Slavova, Sofia O.
AU - Sizov, Vladimir V.
AU - Starova, Galina L.
AU - Koshevoy, Igor O.
AU - Grachova, Elena V.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - A substituted pyridazine was used to construct a family of mononuclear heteroleptic complexes [Ln(tta)3(dppn)], Ln = Pr-Lu; Htta = thenoyltrifluoroacetone; dppn = 3,6-di(2-pyridyl)pyridazine. All the complexes obtained were characterized by CHN elemental analysis, NMR spectroscopy, ESI mass spectrometry, FTIR spectroscopy and single crystal X-ray analysis. The photophysical properties of lanthanide complexes were carefully investigated, and the dppn ligand was found to act as a chromophore centre to sensitize metal-centred emission of the Nd, Sm, Eu, and Yb complexes under UV excitation. It has been shown that a powder sample of the Eu complex can contain two isomers with somewhat different symmetries of the environment of the metallocentre. The mechanism for the emission of luminescent Nd, Sm, Eu, and Yb complexes was investigated by TDDFT calculations and the results confirmed the conclusion made on the basis of experimental data regarding the likely pathway of energy transfer from the chromophore centre to the emissive level of Ln(iii).
AB - A substituted pyridazine was used to construct a family of mononuclear heteroleptic complexes [Ln(tta)3(dppn)], Ln = Pr-Lu; Htta = thenoyltrifluoroacetone; dppn = 3,6-di(2-pyridyl)pyridazine. All the complexes obtained were characterized by CHN elemental analysis, NMR spectroscopy, ESI mass spectrometry, FTIR spectroscopy and single crystal X-ray analysis. The photophysical properties of lanthanide complexes were carefully investigated, and the dppn ligand was found to act as a chromophore centre to sensitize metal-centred emission of the Nd, Sm, Eu, and Yb complexes under UV excitation. It has been shown that a powder sample of the Eu complex can contain two isomers with somewhat different symmetries of the environment of the metallocentre. The mechanism for the emission of luminescent Nd, Sm, Eu, and Yb complexes was investigated by TDDFT calculations and the results confirmed the conclusion made on the basis of experimental data regarding the likely pathway of energy transfer from the chromophore centre to the emissive level of Ln(iii).
KW - GENERALIZED-GRADIENT-APPROXIMATION
KW - INTRAMOLECULAR ENERGY-TRANSFER
KW - SINGLE-MOLECULE MAGNET
KW - EUROPIUM COMPLEXES
KW - HIGHLY LUMINESCENT
KW - LANTHANIDE COMPLEXES
KW - CRYSTAL-STRUCTURE
KW - PHOTOPHYSICAL PROPERTIES
KW - RELAXATION PROCESSES
KW - EU(III) COMPLEX
UR - http://www.scopus.com/inward/record.url?scp=85058181355&partnerID=8YFLogxK
UR - http://xlink.rsc.org/?DOI=C8QI00712H
UR - http://www.mendeley.com/research/heteroleptic-%CE%B2diketonate-lniii-complexes-decorated-pyridyl-substituted-pyridazine-ligands-synthesis
U2 - 10.1039/C8QI00712H
DO - 10.1039/C8QI00712H
M3 - Article
AN - SCOPUS:85058181355
VL - 5
SP - 3015
EP - 3027
JO - Inorganic Chemistry Frontiers
JF - Inorganic Chemistry Frontiers
SN - 2052-1545
IS - 12
ER -
ID: 36164861