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
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
New Journal of Chemistry
ISSN: 1144-0546
, E-ISSN: 1369-9261
|
| Вых. Данные |
Год: 2021,
Том: 45,
Номер: 4,
Страницы: 2276-2284
Страниц
: 9
DOI:
10.1039/d0nj05277a
|
| Ключевые слова |
Acetonitrile; Crystal structure; Electronic structure; Energy transfer; Ligands; Luminescence; Monoterpenes; Olefins; Pyridine; Quantum theory; Quantum yield; Rare earth elements; Synthesis (chemical) |
| Авторы |
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
|
| Организации |
| 1 |
Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
|
| 2 |
Novosibirsk State University, 2, Pirogova Str., 630090 Novosibirsk, Russia
|
| 3 |
Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 9, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
|
| 4 |
Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, 3, Institutskaya Str., Novosibirsk 630090, Russia
|
| 5 |
Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 5, Acad. Lavrentiev Ave., Novosibirsk 630090, Russia
|
|
Информация о финансировании (2)
|
1
|
Российский фонд фундаментальных исследований
|
17-03-00252
|
|
2
|
Российский научный фонд
|
18-13-00246
|
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 complexes 1–3 are isostructural and crystallize in the non-centrosymmetric space group P21212. 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 (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 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.