scholarly journals Lanthanide Isophthalate Metal‐Organic Frameworks: Crystal Structure, Thermal Behavior, and White Luminescence

2020 ◽  
Author(s):  
Virgile Trannoy ◽  
Isis N'Dala‐Louika ◽  
Jérôme Lhoste ◽  
Thomas Devic ◽  
Hélène Serier‐Brault
Keyword(s):  
Crystal Structure ◽  
Thermal Behavior ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
White Luminescence

scholarly journals Nickel(ii) and copper(i,ii)-based metal-organic frameworks incorporating an extended tris-pyrazolate linker

CrystEngComm ◽  
2015 ◽  
Vol 17 (27) ◽  
pp. 4992-5001 ◽  
Author(s):  
Aurel Tăbăcaru ◽  
Simona Galli ◽  
Claudio Pettinari ◽  
Norberto Masciocchi ◽  
Thomas M. McDonald ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Behavior ◽  
Metal Organic Frameworks ◽  
Adsorption Properties ◽  
Metal Organic

The synthesis, thermal behavior, crystal structure and adsorption properties of two novel MOFs isolated by coupling Ni(ii) and Cu(ii) to the extended tris(pyrazolate) strut 1,3,5-tris((1H-pyrazol-4-yl)phenyl)benzene are reported.

Synthesis, crystal structure, luminescence, and photocatalytic properties of a 2D Cu(II) metal-organic frameworks based on 3,5-di(1H-benzimidazol-1-yl)pyridine and 4,4′-oxybis(benzoate) ligands

2020 ◽  
Vol 75 (8) ◽  
pp. 727-732
Author(s):  
Chen Zhang ◽  
Jian-Qing Tao
Keyword(s):  
Crystal Structure ◽  
Thermal Analysis ◽  
Uv Light ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
X Ray Diffraction ◽  
X Ray ◽  
Uv Light Irradiation ◽  
Photocatalytic Activities ◽  
Metal Organic

AbstractA new Cu(II) metal-organic framework, [Cu(L)(OBA)·H2O]n (1) [H2OBA = 4,4′-oxybis(benzoic acid), L = 3,5-di(1H-benzimidazol-1-yl)pyridine] was hydrothermally synthesized and characterized through IR spectroscopy, elemental and thermal analysis and single-crystal X-ray diffraction. Complex 1 is a four-connected uni-nodal 2D net with a (44·62) topology which shows an emission centered at λ ∼393 nm upon excitation at λ = 245 nm. Moreover, complex 1 possesses high photocatalytic activities for the decomposition of Rhodamine B (RhB) under UV light irradiation.

scholarly journals Synthesis, Crystal Structure, and Luminescent Properties of New Zinc(II) and Cadmium(II) Metal-Organic Frameworks Based on Flexible Bis(imidazol-1-yl)alkane Ligands

Crystals ◽  
2016 ◽  
Vol 6 (10) ◽  
pp. 132 ◽  
Author(s):  
Marina Barsukova ◽  
Tatiana Goncharova ◽  
Denis Samsonenko ◽  
Danil Dybtsev ◽  
Andrei Potapov
Keyword(s):  
Crystal Structure ◽  
Metal Organic Frameworks ◽  
Luminescent Properties ◽  
Metal Organic

scholarly journals Crystal Structure Dependence of the Energy Transfer from Tb(III) to Yb(III) in Metal–Organic Frameworks Based in Bispyrazolylpyridines

Crystals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 69 ◽  
Author(s):  
Paloma Martinez-Martin ◽  
Josefina Perles ◽  
Juan Carlos Rodriguez-Ubis
Keyword(s):  
Crystal Structure ◽  
Energy Transfer ◽  
Organic Molecules ◽  
Metal Organic Frameworks ◽  
Structure Dependence ◽  
Characteristic Emission ◽  
Metal Organic ◽  
Lanthanide Metal ◽  
Coordinated Water ◽  
Luminescent Behavior

Luminescent mixed lanthanide metal−organic framwork (MOF) materials have been prepared from two polyheterocyclic diacid ligands, 2,6-bis(3-carboxy-1-pyrazolyl)pyridine and 2,6-bis(4-carboxy-1-pyrazolyl)pyridine. The crystal structures of the two organic molecules are presented together with the structures for the MOFs obtained by hydrothermal synthesis either with Yb(III) or mixed Tb(III)/Yb(III) ions. Different coordination architectures result from each ligand, revealing also important differences between the lanthanides. The mixed lanthanide metal−organic frameworks also present diverse luminescent behavior; in the case of 2,6-bis(4-carboxy-1-pyrazolyl)pyridine, where no coordinated water is present in the metal environment, Tb(III) and Yb(III) characteristic emission is observed by excitation of the bispyrazolylpyridine chromophore.

Two Novel Triazole-Based Metal - Organic Frameworks Consolidated by a Flexible Dicarboxylate Co-ligand: Hydrothermal Synthesis, Crystal Structure, and Luminescence Properties

2008 ◽  
Vol 61 (10) ◽  
pp. 813 ◽  
Author(s):  
En-Cui Yang ◽  
Qing-Qing Liang ◽  
Xiu-Guang Wang ◽  
Xiao-Jun Zhao
Keyword(s):  
Crystal Structure ◽  
Thermal Stability ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Structure Property ◽  
Hydrogen Bond Acceptor ◽  
X Ray Crystallography ◽  
Carboxylate Groups ◽  
Elemental Analyses ◽  
Metal Organic

To explore the effects of a co-ligand on the construction of mixed-ligand metal–organic frameworks (MOFs), two new triazole-based complexes with a flexible dicarboxylate as a co-ligand, {[Zn4(trz)4(gt)2(H2O)2](H2O)2}n 1 and {[Cd2(trz)2(gt)(H2O)2](H2O)4}n 2 (Htrz = 1,2,4-triazole; H2gt = glutaric acid), were synthesized and their structures were fully characterized by elemental analyses, IR spectroscopy, and single-crystal X-ray crystallography. Their thermal stability and luminescence emissions were further investigated to establish their structure–property relationship. Crystal structure determination showed that 1 is a neutral two-dimensional pillared-bilayer network consisting of 14-membered hydrophobic channels, whereas 2 is an infinite three-dimensional framework constructed from tetranuclear [Cd4(trz)4]4+ subunits. Interestingly, the overall structure of both MOFs can be solely supported by ZnII/CdII and trz anions, and were further consolidated by the introduction of a flexible gt co-ligand. In addition, the carboxylate groups in the co-ligand can also serve as a weak O–H···O hydrogen-bond acceptor to capture guest water molecules. The synchronous weight-loss behaviour of trz and gt anions presented by thermogravometric curves suggest their cooperative contributions to the thermal stability of the MOFs. In contrast, the fluorescence emissions of two complexes are significantly dominated by the core trz ligand, rather than the gt co-ligand and metal ions.

Lanthanide functionalized hybrid materials of polyoxometallate based metal–organic frameworks for multi-color luminescence

2017 ◽  
Vol 41 (21) ◽  
pp. 12795-12800 ◽  
Author(s):  
G. D. Jia ◽  
B. Yan
Keyword(s):  
Hybrid Materials ◽  
Metal Organic Frameworks ◽  
Excitation Wavelength ◽  
Metal Organic ◽  
White Luminescence

Lanthanide functionalized hybrids of polyoxometallate based MOF Ln3+⊂COK-15 are prepared and display multi-color light, together with a white luminescence (x = 0.3845, y = 0.303) by tuning an appropriate amount of Eu3+ and a suitable excitation wavelength.

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