Ln(III) complexes with a chiral 1H-pyrazolo[3,4-b]pyridine derivative fused with a (-)-alpha-pinene moiety: synthesis, crystal structure, and photophysical studies in solution and in the solid state

Ln(III) complexes with a chiral 1H-pyrazolo[3,4-b]pyridine derivative fused with a (-)-alpha-pinene moiety: synthesis, crystal structure, and photophysical studies in solution and in the solid state Full article

Journal

New Journal of Chemistry
ISSN: 1144-0546

Output data

Year: 2021, Volume: 45, Number: 4, Pages: 2276-2284 Pages count : 9 DOI: 10.1039/d0nj05277a

Authors

Bryleva Yuliya A. ^1,2 , Ustimenko Yuliya P. ³ , Plyusnin Victor F. ^2,4 , Mikheilis Alexsandr V. ⁴ , Shubin Aleksandr A. ^2,5 , Glinskaya Ludmila A. ¹ , Komarov Vladislav Yu. ^1,2 , Agafontsev Alexander M. ^2,3 , Tkachev Alexey V. ^2,3

Affiliations

1	(Данные Web of science) Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, 3 Acad Lavrentiev Ave, Novosibirsk 630090, Russia
2	(Данные Web of science) Novosibirsk State Univ, 2 Pirogova Str, Novosibirsk 630090, Russia
3	(Данные Web of science) Russian Acad Sci, Vorozhtsov Novosibirsk Inst Organ Chem, Siberian Branch, 9 Acad Lavrentiev Ave, Novosibirsk 630090, Russia
4	(Данные Web of science) Russian Acad Sci, Inst Chem Kinet & Combust, Siberian Branch, 3 Inst Skaya Str, Novosibirsk 630090, Russia
5	(Данные Web of science) Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, 5 Acad Lavrentiev Ave, Novosibirsk 630090, Russia

Chiral lanthanide(iii) complexes, [LnL(2)(NO3)(3)]center dot MeCN (Ln = Sm (1), Eu (2), Tb (3)), containing an optically active 1H-pyrazolo[3,4-b]pyridine derivative fused with a natural monoterpene (-)-alpha-pinene moiety (L) have been synthesized and structurally characterized. The mononuclear complexes 1-3 are isostructural and crystallize in the non-centrosymmetric space group P2(1)2(1)2. The lanthanide ions are ten-coordinated with three bidentate chelating nitrate ions and two bidentate N,N-donor ligands L. Complexes 1-3 show 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 order 1 < 2 < 3. Complex 3 possesses a very high luminescence quantum yield both in acetonitrile solution (phi(f) = 0.736) and in the solid state (phi(f) = 0.890), indicating efficient energy transfer from two ligands L to the Ln center. The luminescence quantum yields of complexes 1 and 2 in 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.

Bryleva Y.A. , Ustimenko Y.P. , Plyusnin V.F. , Mikheilis A.V. , Shubin A.A. , Glinskaya L.A. , Komarov V.Y. , Agafontsev A.M. , Tkachev A.V.
Ln(III) complexes with a chiral 1H-pyrazolo[3,4-b]pyridine derivative fused with a (-)-alpha-pinene moiety: synthesis, crystal structure, and photophysical studies in solution and in the solid state
New Journal of Chemistry. 2021. V.45. N4. P.2276-2284. DOI: 10.1039/d0nj05277a WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:000613637800059
Scopus:	2-s2.0-85100276943
Elibrary:	44964173
OpenAlex:	W3120477447

DB	Citing
Web of science	9
Scopus	9
Elibrary	10
OpenAlex	8