Crystal Structure, Multiplex Photoluminescence, and
Magnetic Properties of a Series of Lanthanide Coordination Polymers
Based on Quinoline Carboxylate Ligand
Wentao Xu
Youfu Zhou
Decai Huang
Wei Xiong
Mingyi Su
Kun Wang
Shuo Han
Maochun Hong
10.1021/cg401391b.s002
https://acs.figshare.com/articles/dataset/Crystal_Structure_Multiplex_Photoluminescence_and_Magnetic_Properties_of_a_Series_of_Lanthanide_Coordination_Polymers_Based_on_Quinoline_Carboxylate_Ligand/2347294
A series of novel one-dimensional
(1D) lanthanide coordination polymers, [Ln(pqc)(Hpqc)(NO<sub>3</sub>)<sub>2</sub>]<sub><i>n</i></sub> (Ln = Sm (<b>1</b>), Eu (<b>2</b>), Gd (<b>3</b>), Tb (<b>4</b>),
Dy (<b>5</b>), Ho (<b>6</b>), Er (<b>7</b>), Tm
(<b>8</b>), Yb (<b>9</b>), or Lu (<b>10</b>); Hpqc
= 2-phenyl-4-quinolinecarboxylic acid), have been synthesized via
solvothermal reaction at low temperature and then characterized by
single-crystal X-ray diffraction. Polymers <b>1</b>–<b>10</b> are isostructural and feature a 1D chain based on binuclear
units in which Ln<sup>3+</sup> polyhedra are interconnected by bridging
Hpqc ligands and terminal nitrates. The infinite chains are further
extended to a three-dimensional supramolecular framework through π···π
stacking and hydrogen bonding interactions. This series affords an
opportunity to study the lanthanide contraction effect, demonstrating
that the sum of Ln–O distances proportional to this contraction
follow a quadratic decay as a function of the number <i>n</i> of f electrons. The photoluminescence spectra show that these complexes
are highly sensitized by Hpqc and exhibit characteristic Ln<sup>3+</sup> (Sm (<b>1</b>), Eu (<b>2</b>), Tb (<b>4</b>),
Er (<b>7</b>), and Yb (<b>9</b>)) and ligand centered
(Dy (<b>5</b>), Ho (<b>6</b>), Tm (<b>8</b>), and
Lu (<b>10</b>)) luminescence in both visible and near-infrared
(NIR) regions. The magnetic properties of <b>4</b>–<b>7</b> have also been investigated.
2013-12-04 00:00:00
photoluminescence spectra show
1 D chain
NIR
Ho
terminal nitrates
lanthanide contraction effect
Eu
Er
supramolecular framework
f electrons
Lanthanide Coordination Polymers
Magnetic Properties
Sm
crystal Structure
Lu
lanthanide coordination polymers
Ln
Tm
Tb
Yb
Dy
solvothermal reaction
Multiplex Photoluminescence
Quinoline Carboxylate LigandA series
Hpqc ligands
number n