Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Ln(iii) complexes with a chiral 1H-pyrazolo[3,4-b]pyridine derivative fused with a (−)-α-pinene moiety : synthesis, crystal structure, and photophysical studies in solution and in the solid state. / Bryleva, Yuliya A.; Ustimenko, Yuliya P.; Plyusnin, Victor F. и др.
в: New Journal of Chemistry, Том 45, № 4, 28.01.2021, стр. 2276-2284.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Ln(iii) complexes with a chiral 1H-pyrazolo[3,4-b]pyridine derivative fused with a (−)-α-pinene moiety
T2 - synthesis, crystal structure, and photophysical studies in solution and in the solid state
AU - Bryleva, Yuliya A.
AU - Ustimenko, Yuliya P.
AU - Plyusnin, Victor F.
AU - Mikheilis, Alexsandr V.
AU - Shubin, Aleksandr A.
AU - Glinskaya, Ludmila A.
AU - Komarov, Vladislav Yu
AU - Agafontsev, Alexander M.
AU - Tkachev, Alexey V.
N1 - Funding Information: The authors thank Anna P. Zubareva and Valentina V. Ankudovich for the elemental analysis, Nina I. Alferova for the IR data, Natalia P. Korotkevich for the X-ray phase analysis data, Pavel E. Plyusnin for the thermogravimetric analysis. The luminescence studies of the lanthanide complexes performed in this work were supported by the Russian Science Foundation (Grant No. 18-13-00246). The experimental results used in this work were obtained with the financial support from the Russian Foundation for Basic Research (Grant No. 17-03-00252). This research was conducted using the resources of the Siberian Branch of the Russian Academy of Sciences Siberian Supercomputer Center. This work is dedicated to the memory of Professor Stanislav V. Larionov, our colleague and teacher. Publisher Copyright: © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2021. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/1/28
Y1 - 2021/1/28
N2 - Chiral lanthanide(iii) complexes, [LnL2(NO3)3]·MeCN (Ln = Sm (1), Eu (2), Tb (3)), containing an optically active 1H-pyrazolo[3,4-b]pyridine derivative fused with a natural monoterpene (−)-α-pinene moiety (L) have been synthesized and structurally characterized. The mononuclear complexes1-3are isostructural and crystallize in the non-centrosymmetric space groupP21212. The lanthanide ions are ten-coordinated with three bidentate chelating nitrate ions and two bidentate N,N-donor ligands L. Complexes1-3show metal-centered luminescence at room temperature in solution and in the solid state. The solid-state and solution-phase luminescence quantum yields increase in the order1<2<3. Complex3possesses a very high luminescence quantum yield both in acetonitrile solution (φf= 0.736) and in the solid state (φf= 0.890), indicating efficient energy transfer from two ligands L to the Ln center. The luminescence quantum yields of complexes1and2in the acetonitrile solutions are almost two and four times higher, respectively, than those in the solid state. DFT and TD-DFT studies were carried out to explore geometry and electronic structure of L and to gain insight into its absorption properties.
AB - Chiral lanthanide(iii) complexes, [LnL2(NO3)3]·MeCN (Ln = Sm (1), Eu (2), Tb (3)), containing an optically active 1H-pyrazolo[3,4-b]pyridine derivative fused with a natural monoterpene (−)-α-pinene moiety (L) have been synthesized and structurally characterized. The mononuclear complexes1-3are isostructural and crystallize in the non-centrosymmetric space groupP21212. The lanthanide ions are ten-coordinated with three bidentate chelating nitrate ions and two bidentate N,N-donor ligands L. Complexes1-3show metal-centered luminescence at room temperature in solution and in the solid state. The solid-state and solution-phase luminescence quantum yields increase in the order1<2<3. Complex3possesses a very high luminescence quantum yield both in acetonitrile solution (φf= 0.736) and in the solid state (φf= 0.890), indicating efficient energy transfer from two ligands L to the Ln center. The luminescence quantum yields of complexes1and2in the acetonitrile solutions are almost two and four times higher, respectively, than those in the solid state. DFT and TD-DFT studies were carried out to explore geometry and electronic structure of L and to gain insight into its absorption properties.
UR - http://www.scopus.com/inward/record.url?scp=85100276943&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/e0b65049-cb91-3aa6-b36f-2df62e37a1f2/
U2 - 10.1039/d0nj05277a
DO - 10.1039/d0nj05277a
M3 - Article
AN - SCOPUS:85100276943
VL - 45
SP - 2276
EP - 2284
JO - New Journal of Chemistry
JF - New Journal of Chemistry
SN - 1144-0546
IS - 4
ER -
ID: 27706892