Luminescent Zn(ii) and Cd(ii) complexes with chiral 2,2 '-bipyridine ligands bearing natural monoterpene groups: synthesis, speciation in solution and photophysics

Luminescent Zn(ii) and Cd(ii) complexes with chiral 2,2 '-bipyridine ligands bearing natural monoterpene groups: synthesis, speciation in solution and photophysics Научная публикация

Журнал

Dalton Transactions
ISSN: 1477-9226 , E-ISSN: 1477-9234

Вых. Данные

Год: 2020, Том: 49, Номер: 22, Страницы: 7552-7563 Страниц : 12 DOI: 10.1039/d0dt01438a

Авторы

Kokina Tatyana E. ^1,2 , Rakhmanova Marianna, I ¹ , Shekhovtsov Nikita A. ^1,2 , Glinskaya Ludmila A. ¹ , Komarov Vladislav Y. ^1,2 , Agafontsev Alexander M. ³ , Baranov Andrey Y. ¹ , Plyusnin Pavel E. ^1,2 , Sheludyakova Liliya A. ¹ , Tkachev Alexey, V ³ , Bushuev Mark B. ^1,2

Организации

1	(Данные Web of science) Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, 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, Siberian Branch, NN Vorozhtsov Novosibirsk Inst Organ Chem, 9 Acad Lavrentiev Ave, Novosibirsk 630090, Russia

Mononuclear zinc(ii) and cadmium(ii) complexes, ZnLCl2(1), CdLCl2(2), (ZnLCl2)-Cl-1 center dot 2H(2)O (3), and (CdLCl2)-Cl-1 center dot 2H(2)O (4), with chiral ligands containing a 2,2 '-bipyridine moiety and natural terpene (+)-limonene (L) or (+)-3-carene (L-1) moieties were synthesized. In these complexes theLandL(1)ligands are shown to coordinate Zn(2+)and Cd(2+)ions through the 2,2 '-bipyridine moiety. The acetamide group of the ligands interacts with M(2+)ions by forming NMIDLINE HORIZONTAL ELLIPSISM(2+)and C& xe001;OMIDLINE HORIZONTAL ELLIPSISM(2+)contacts and N-HMIDLINE HORIZONTAL ELLIPSISCl hydrogen bonds with coordinated Cl(-)ions. In solutions the complexes have several conformers differing by the degree of the turn of the acetamide moiety relative to the ligand core and the type of its interaction with the coordination core. The ligands and complexes exhibit luminescence with the quantum yield increasing in the order: ligand < cadmium(ii) complex < zinc(ii) complex. The complexes3and4demostrate excitation wavelength independent single-channel fluorescence. As opposed to3and4, the complexes1and2demonstrate excitation wavelength dependent emission with nanosecond and microsecond lifetimes of the excited states. According to our TD-DFT calculations, an interplay of ligand centered and halide to ligand transitions facilitates two deactivation channels in1and2: S-1-S(0)and T-1-S-0.

Kokina T.E. , Rakhmanova M.I. , Shekhovtsov N.A. , Glinskaya L.A. , Komarov V.Y. , Agafontsev A.M. , Baranov A.Y. , Plyusnin P.E. , Sheludyakova L.A. , Tkachev A.V. , Bushuev M.B.
Luminescent Zn(ii) and Cd(ii) complexes with chiral 2,2 '-bipyridine ligands bearing natural monoterpene groups: synthesis, speciation in solution and photophysics
Dalton Transactions. 2020. V.49. N22. P.7552-7563. DOI: 10.1039/d0dt01438a WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:000542716300029
Scopus:	2-s2.0-85086284214
РИНЦ:	43305660
OpenAlex:	W3026501394

БД	Цитирований
Web of science	18
Scopus	16
РИНЦ	17
OpenAlex	16