New NIR-emissive tetranuclear Er(III) complexes with 4-hydroxo-2,1,3-benzothiadiazolate and dibenzoylmethanide ligands: synthesis and characterization

New NIR-emissive tetranuclear Er(III) complexes with 4-hydroxo-2,1,3-benzothiadiazolate and dibenzoylmethanide ligands: synthesis and characterization Full article

Journal

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

Output data

Year: 2015, Volume: 44, Number: 12, Pages: 5727-5734 Pages count : DOI: 10.1039/c4dt03878a

Authors

Sukhikh Taisiya S. ¹ , Bashirov Denis A. ^1,2 , Kuratieva Natalia V. ^1,2 , Smolentsev Anton I. ¹ , Bogomyakov Artem S. ³ , Burilov Vladimir A. ⁴ , Mustafina Asia R. ⁵ , Zibarev Andrey V. ^6,7,8 , Konchenko Sergey N. ^1,2

Affiliations

1	(Данные Web of science) Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia
2	(Данные Web of science) Novosibirsk State Univ, Natl Res Univ, Dept Nat Sci, Novosibirsk 630090, Russia
3	(Данные Web of science) Russian Acad Sci, Siberian Branch, Int Tomog Ctr, Novosibirsk 630090, Russia
4	(Данные Web of science) Kazan Fed Univ, Butlerov Inst Chem, Kazan 420008, Russia
5	(Данные Web of science) Russian Acad Sci, AE Arbuzov Organ & Phys Chem Inst, Kazan 420088, Russia
6	(Данные Web of science) Russian Acad Sci, Siberian Branch, Vorozhtsov Inst Organ Chem, Novosibirsk 630090, Russia
7	(Данные Web of science) Novosibirsk State Univ, Natl Res Univ, Dept Phys, Novosibirsk 630090, Russia
8	(Данные Web of science) Tomsk State Univ, Natl Res Univ, Dept Chem, Tomsk 634050, Russia

New tetranuclear heteroleptic complexes [Er-4(dbm)(6)(O-btd)(4)(OH)(2)] (1) and [Er-4(dbm)(4)(O-btd)(6)(OH)(2)] (2) (O-btd = 4-hydroxo-2,1,3-benzothiadiazolate and dbm = dibenzoylmethanide) and their solvates with toluene, THF and CH2Cl2 were prepared using two synthetic approaches. The structures of the products were confirmed by single-crystal X-ray diffraction. Magnetic properties of 1 and 2 are in good agreement with X-ray data. The effective magnetic moment (mu(eff)) values at 300 K for 1 and 2 corresponds to a system of 4 non-interacting Er(III) ions in the ground state (4)J(15/2) with g = 6/5. At ambient temperature and upon excitation with lambda(exc) = 450 nm, complexes 1 and 2 exhibit luminescence at similar to 1530 nm, i.e. in the near infra-red (NIR) region. The luminescence intensity grows with increasing the number of the (O-btd) ligands in the complexes. This observation suggests (O-btd)-as a new efficient antenna ligand for the lanthanide-based NIR luminescence.

Sukhikh T.S. , Bashirov D.A. , Kuratieva N.V. , Smolentsev A.I. , Bogomyakov A.S. , Burilov V.A. , Mustafina A.R. , Zibarev A.V. , Konchenko S.N.
New NIR-emissive tetranuclear Er(III) complexes with 4-hydroxo-2,1,3-benzothiadiazolate and dibenzoylmethanide ligands: synthesis and characterization
Dalton Transactions. 2015. V.44. N12. P.5727-5734. DOI: 10.1039/c4dt03878a WOS Scopus РИНЦ

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