Issue 29, 2019

Enhanced luminescence and tunable magnetic properties of lanthanide coordination polymers based on fluorine substitution and phenanthroline ligand

Abstract

A family of highly stable lanthanide coordination polymers incorporating fluorine-substituted carboxylate tectonics and the rigid ligand phenanthroline, namely, {[Lnm(Tfbda)n(Phen)2·2H2O]·2H2O}z, (Ln = Pr (1), Ho (4) and Gd (7), m = 2, n = 3); {[Ln3 (Tfbda)m1 (Tfba)m2(Phen)n·2H2O]·H2O}z (z > 1, Ln = Dy (3), Er (5) and Yb (6), m1 = 4, m2 = 1, n = 3); [Ln2(H2Tfbda)4(Phen)2·(H2O)2]·Phen (Ln = Nd (2)), Tfbda = 3,4,5,6-tetrafluoro-benzene-1,2-dioic acid, Tfba = 2,3,4,5-tetrafluorobenzoic acid have been afforded under hydrothermal conditions. The series of coordination polymers exhibited diverse structural motifs, from dinuclear cluster to 1-D chain arrary, displaying efficiently sensitized luminescence over a spectral range from visible to near-infrared (NIR) region and a long lifetime, due to efficient energy transfer from fluorine-substituted ligands to Ln(III) centers in solid state. Slow relaxation magnetization and significant frequency- and temperature-dependent peaks were observed in trinuclear Dy(III)-based coordination polymer 3. DC magnetic susceptibility studies reveal the existence of weak ferromagnetic interaction within 7.

Graphical abstract: Enhanced luminescence and tunable magnetic properties of lanthanide coordination polymers based on fluorine substitution and phenanthroline ligand

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
04 mar 2019
Accepted
15 apr 2019
First published
24 maj 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 16328-16338

Enhanced luminescence and tunable magnetic properties of lanthanide coordination polymers based on fluorine substitution and phenanthroline ligand

X. Feng, Y. Shang, H. Zhang, R. Li, W. Wang, D. Zhang, L. Wang and Z. Li, RSC Adv., 2019, 9, 16328 DOI: 10.1039/C9RA01574D

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