A new family of dinuclear lanthanide complexes exhibiting luminescence, magnetic entropy changes and single molecule magnet behaviors

Abstract

A new family of lanthanide complexes based on the tetrazole-1-acetic ligand and the 1,10-phenanthroline co-ligand were synthesized and characterized by IR spectra, thermogravimetric analyses, powder X-ray diffraction and single-crystal X-ray...

Syntheses, structures and magnetic properties of mononuclear, dinuclear and tetranuclear dysprosium(iii) complexes based on azotetrazole-3-hydroxy-2-naphthoic acid

“…Lanthanide(III) complexes have been extensively studied in the last two decades due to their distinctive optical and magnetic properties. [1][2][3][4][5][6][7][8][9][10] In particular, single-molecule magnets (SMMs), which exhibit slow relaxation of magnetization at low temperature, have become increasingly promising in many areas, such as ultrahigh density information storage, quantum computing, and molecular spintronics. [11][12][13][14][15][16] Lanthanide-based SMMs (Ln-SMMs) have attracted great attention recently because of their large magnetic moments and large magnetic anisotropy, especially Dy(III)-based SMMs, widely used for preparing high-performance SMMs.…”

3-Pyridylacetic-Based Lanthanide Complexes Exhibiting Magnetic Entropy Changes, Single-Molecule Magnet, and Fluorescence

“…Based on previous reports, no example of 3pyridylacetate-based Ln complexes has been reported, and only several transition-metal complexes with 3-PAA have been reported. 33−36 As a part of our continuous studies on Ln complexes with magnetic and luminescent properties, 37,38 herein, a series of Ln-based complexes are obtained using 3-PAA and 1,10-phenanthroline (phen) as auxiliary ligands. This work is based on the following ideas: (…”

“…However, the 3-pyridylacetic ligand (3-PAA) as an important and simple pyridylecarboxylic ligand has received less attention. Based on previous reports, no example of 3-pyridylacetate-based Ln complexes has been reported, and only several transition-metal complexes with 3-PAA have been reported. − As a part of our continuous studies on Ln complexes with magnetic and luminescent properties, , herein, a series of Ln-based complexes are obtained using 3-PAA and 1,10-phenanthroline (phen) as auxiliary ligands. This work is based on the following ideas: (1) Ln-based complexes fabricated by 3-PAA are unexplored, which provide substantial research opportunities; (2) phen as a kind of N , N ′ bulky auxiliary ligands can block the high coordination sites of lanthanide centers, which can achieve polynuclear Ln-based SMMs with isolated structures; and (3) the 3-PAA and phen ligands are aromatic π-conjugated molecules, which can serve as chromophoric antenna ligands to sensitize lanthanide luminescence.…”