Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 12, 2015
Previous Article Next Article

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

Author affiliations

Abstract

New tetranuclear heteroleptic complexes [Er4(dbm)6(O-btd)4(OH)2] (1) and [Er4(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 (μeff) values at 300 K for 1 and 2 corresponds to a system of 4 non-interacting Er(III) ions in the ground state 4J15/2 with g = 6/5. At ambient temperature and upon excitation with λexc = 450 nm, complexes 1 and 2 exhibit luminescence at ∼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.

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

Back to tab navigation

Supplementary files

Article information


Submitted
16 Dec 2014
Accepted
05 Feb 2015
First published
25 Feb 2015

Dalton Trans., 2015,44, 5727-5734
Article type
Paper

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

T. S. Sukhikh, D. A. Bashirov, N. V. Kuratieva, A. I. Smolentsev, A. S. Bogomyakov, V. A. Burilov, A. R. Mustafina, A. V. Zibarev and S. N. Konchenko, Dalton Trans., 2015, 44, 5727
DOI: 10.1039/C4DT03878A

Social activity

Search articles by author

Spotlight

Advertisements