Jump to main content
Jump to site search


Near-infrared luminescence and magnetic properties of dinuclear rare earth complexes modulated by β-diketone co-ligands

Author affiliations

Abstract

Seven phenoxo–O and carbonyl–O bridged dinuclear rare earth complexes have been assembled utilizing 3-methoxysalicylaldehyde-2-aminobenzoylhydrazone (H2L) and three β-diketone ligands (Hdbm = 1,3-diphenyl-1,3-propanedione, Hacac = acetylacetone, Hbeac = 1-phenyl-1,3-butanedione): [RE2L(HL)(acac)3]·3CH3CH2OH (RE(III) = Eu (1), Tb (2), Dy (3), Ho (4), Er (5)), [Yb2L2(dbm)2(CH3OH)2]·CH3OH (6), [Dy2L(HL)(beac)3] (7). Complexes 5 and 6 show the characteristic emission peaks of the corresponding Er3+ and Yb3+ ions, respectively. Studies on the magnetic properties of the complexes reveal that complexes 3 and 7 exhibit slow magnetic relaxation behaviors, typical of SMM behaviors, resulting in an energy barrier of 140 K for 3 and 75 K for 7. Meanwhile, this research demonstrates that the magnetic properties can be modulated by subtle changes in the coordination environment resulting from the changes in the co-ligand substituents.

Graphical abstract: Near-infrared luminescence and magnetic properties of dinuclear rare earth complexes modulated by β-diketone co-ligands

Back to tab navigation

Supplementary files

Article information


Submitted
11 Jan 2020
Accepted
28 Jan 2020
First published
29 Jan 2020

New J. Chem., 2020, Advance Article
Article type
Paper

Near-infrared luminescence and magnetic properties of dinuclear rare earth complexes modulated by β-diketone co-ligands

L. Li, J. Gou, D. Wu, Y. Wang, Y. Duan, H. Chen, H. Gao and J. Cui, New J. Chem., 2020, Advance Article , DOI: 10.1039/D0NJ00164C

Social activity

Search articles by author

Spotlight

Advertisements