Bright luminescence in lanthanide coordination polymers with tetrafluoroterephthalate as a bridging ligand

2015 ◽  
Vol 44 (13) ◽  
pp. 6249-6259 ◽  
Author(s):  
Miriam Sobieray ◽  
Jens Gode ◽  
Christiane Seidel ◽  
Marieke Poß ◽  
Claus Feldmann ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Visible Region ◽  
Green Emission ◽  
Quantum Yields ◽  
Lanthanide Coordination Polymers ◽  
Bridging Ligand ◽  
Bright Luminescence

Ten lanthanide coordination polymers with tetrafluoroterephthalate as the linker were synthesized. Europium and terbium compounds exhibit intense red and green emission in the visible region with quantum yields up to 67%.

Lanthanide coordination polymers based on designed bifunctional 2-(2,2′:6′,2″-terpyridin-4′-yl)benzenesulfonate ligand: syntheses, structural diversity and highly tunable emission

2019 ◽  
Vol 75 (5) ◽  
pp. 855-864 ◽  
Author(s):  
Yi-Chen Hu ◽  
Chao Bai ◽  
Huai-Ming Hu ◽  
Chuan-Ti Li ◽  
Tian-Hua Zhang ◽  
...  
Keyword(s):  
Dicarboxylic Acid ◽  
Coordination Polymers ◽  
Emission Spectra ◽  
Green Emission ◽  
Structural Diversity ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
Lanthanide Coordination Polymers ◽  
Connected Node ◽  
Tunable Emission

Seven novel lanthanide coordination polymers, [Eu(STP)(glu)] n (1), [Ln4(STP)2(glu)5] n ·4nH2O [Ln = Er (2), Yb (3)], [Ln(STP)(1,3-bdc)] n ·0.5nH2O [Ln = Tb (4), Yb (5)], and [Ln(STP)(1,2-bdc)] n [Ln = Eu (6), Tb (7)] [NaSTP = sodium 2-(2,2′:6′,2″-terpyridin-4′-yl)benzenesulfonate, H2glu = glutaric acid, H2(1,3-bdc) = benzene-1,3-dicarboxylic acid, H2(1,2-bdc) = benzene-1,2-dicarboxylic acid], have been prepared under hydrothermal conditions and characterized by elemental analysis, IR and single-crystal X-ray diffraction. Compound (1) possesses a 2D layered structure based on 1D chains with STP− and glu2− anions acting as bridges. Compounds (2) and (3) are isomorphous and show a rare 3D tcj/hc net with a tetranuclear Ln3+ unit regarded as a seven-connected node and a glu2− anion serving as a three-connected node. Compounds (4) and (5) are isomorphous and exhibit six-connected pcu nets by denoting binuclear units to six-connected nodes. Compounds (6) and (7) display 3D 3,5T1 nets with (1,2-bdc)2− anions and dimetallic units serving as three- and five-connected nodes, respectively. The Eu compounds (1) and (6) demonstrate typically red emission, while the Tb compounds (4) and (7) exhibit characteristic green emission. The emission spectra of heteronuclear compounds [Eu x Tb1−x (STP)(1,2-bdc)] n (0 ≤ x ≤ 1) as efficient luminescent tags were investigated. The intermetallic energy transfer of Tb to Eu was also evaluated.

Lanthanide Coordination Polymers with Tetrafluoroterephthalate as a Bridging Ligand: Thermal and Optical Properties

2012 ◽  
Vol 51 (8) ◽  
pp. 4679-4688 ◽  
Author(s):  
Christiane Seidel ◽  
Chantal Lorbeer ◽  
Joanna Cybińska ◽  
Anja-Verena Mudring ◽  
Uwe Ruschewitz
Keyword(s):  
Optical Properties ◽  
Coordination Polymers ◽  
Lanthanide Coordination Polymers ◽  
Bridging Ligand

scholarly journals Single-Ion Magnet and Photoluminescence Properties of Lanthanide(III) Coordination Polymers Based on Pyrimidine-4,6-Dicarboxylate

2021 ◽  
Vol 7 (1) ◽  
pp. 8
Author(s):  
Oier Pajuelo-Corral ◽  
Jose Angel García ◽  
Oscar Castillo ◽  
Antonio Luque ◽  
Antonio Rodríguez-Diéguez ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Single Molecule ◽  
Visible Region ◽  
Emission Spectra ◽  
Lanthanide Ions ◽  
Quantum Yields ◽  
Nitrate Anion ◽  
Absolute Quantum

Herein, we report the magnetic and photoluminescence characterization of coordination polymers (CP) built from the combination of lanthanide(III) ions, pyrimidine-4,6-dicarboxylate (pmdc) ligand and a co-ligand with formula {[Dy(μ-pmdc)(μ-ox)0.5(H2O)3]·2H2O}n (1-Dy), {[Dy(μ3-pmdc)(μ-ox)0.5(H2O)2] ~2.33H2O}n (2-Dy), {[Dy2(μ3-pmdc)(μ4-pmdc)(μ-ox)(H2O)3]·5H2O}n (3-Dy), {[Ln(μ3-pmdc)(μ-ox)0.5(H2O)2]·H2O}n (where Ln(III) = Nd (4-Nd), Sm (4-Sm), Eu (4-Eu) and Dy (4-Dy)) and {[Dy(μ4-pmdc)(NO3)(H2O)]·H2O}n (5-Dy). It must be noted the presence of oxalate anion acting as ditopic co-ligand in compounds 1-Dy, 2-Dy, 3-Dy and 4-Ln, whereas in 5-Dy the nitrate anion plays the role of terminal co-ligand. Direct current measurements carried out for the dysprosium-based CPs reveal almost negligible interactions between Dy3+ ions within the crystal structure, which is confirmed by computed values of the exchange parameters J. In addition, alternating current measurements show field-induced single-molecule magnet (SMM) behavior in compounds 1-Dy, 2-Dy, 4-Dy and 5-Dy, whereas slight-frequency dependence is also observed in 3-Dy. Solid state emission spectra performed at room temperature for those compounds emitting in visible region confirm the occurrence of significant ligand-to-lanthanide charge transfer in view of the strong characteristic emissions for all lanthanide ions. Emission decay curves were also recorded to estimate the emission lifetimes for the reported compounds, in addition to the absolute quantum yields. Among them, the high quantum yield of 25.0% measured for 4-Eu is to be highlighted as a representative example of the good emissive properties of the materials.

Formation of the Water Layer in Lanthanide Coordination Polymers with 6-Methyl-2,3,5-Pyridinetricarboxylate as a Novel Bridging Ligand

2010 ◽  
Vol 10 (1) ◽  
pp. 218-223 ◽  
Author(s):  
Ai-Hong Yang ◽  
Li-Hua Zhao ◽  
Ying-Ping Quan ◽  
Hong-Ling Gao ◽  
Jian-Zhong Cui ◽  
...  
Keyword(s):  
Coordination Polymers ◽  
Water Layer ◽  
Lanthanide Coordination Polymers ◽  
Bridging Ligand

Visible-light-responsive lanthanide coordination polymers for highly efficient photocatalytic aerobic oxidation of amines and thiols

2021 ◽  
Author(s):  
Zhifen Guo ◽  
Xin Liu ◽  
Yan Che ◽  
Hongzhu Xing ◽  
Peng Chen
Keyword(s):  
Visible Light ◽  
Molecular Oxygen ◽  
Coordination Polymers ◽  
Aerobic Oxidation ◽  
Synthesis And Characterization ◽  
Lanthanide Coordination Polymers ◽  
Highly Efficient ◽  
Photocatalytic Reactions ◽  
Energy Issues

Development of visible-light-induced photocatalytic reactions using molecular oxygen as terminal oxidant is intriguing in view of the current environmental and energy issues. We report herein the synthesis and characterization of...

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