Construction of Three-Dimensional Metal−Organic Frameworks with Helical Character through Coordinative and Supramolecular Interactions

2009 ◽  
Vol 9 (3) ◽  
pp. 1605-1613 ◽  
Author(s):  
Jian-Qiao Chen ◽  
Yue-Peng Cai ◽  
Hua-Cai Fang ◽  
Zheng-Yuan Zhou ◽  
Xu-Lin Zhan ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Supramolecular Interactions ◽  
Metal Organic

scholarly journals Four Novel d10 Metal-Organic Frameworks Incorporating Amino-Functionalized Carboxylate Ligands: Synthesis, Structures, and Fluorescence Properties

2021 ◽  
Vol 9 ◽  
Author(s):  
Wang Xie ◽  
Jie Wu ◽  
Xiaochun Hang ◽  
Honghai Zhang ◽  
Kang shen ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Fluorescence Properties ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Quenching Effect ◽  
D10 Metal ◽  
Metal Organic ◽  
Point Symbol

By employment of amino-functionalized dicarboxylate ligands to react with d10 metal ions, four novel metal-organic frameworks (MOFs) were obtained with the formula of {[Cd(BCPAB)(μ2-H2O)]}n (1), {[Cd(BDAB)]∙2H2O∙DMF}n (2), {[Zn(BDAB)(BPD)0.5(H2O)]∙2H2O}n (3) and {[Zn(BDAB)(DBPB)0.5(H2O)]∙2H2O}n (4) (H2BCPAB = 2,5-bis(p-carbonylphenyl)-1-aminobenzene; H2BDAB = 1,2-diamino-3,6-bis(4-carboxyphenyl)benzene); BPD = (4,4′-bipyridine); DBPB = (E,E-2,5-dimethoxy-1,4-bis-[2-pyridin-vinyl]-benzene; DMF = N,N-dimethylformamide). Complex 1 is a three-dimensional (3D) framework bearing seh-3,5-Pbca nets with point symbol of {4.62}{4.67.82}. Complex 2 exhibits a 4,4-connected new topology that has never been reported before with point symbol of {42.84}. Complex 3 and 4 are quite similar in structure and both have 3D supramolecular frameworks formed by 6-fold and 8-fold interpenetrated 2D coordination layers. The structures of these complexes were characterized by single crystal X-ray diffraction (SC-XRD), thermal gravimetric analysis (TGA) and powder X-ray diffraction (PXRD) measurements. In addition, the fluorescence properties and the sensing capability of 2–4 were investigated as well and the results indicated that complex 2 could function as sensor for Cu2+ and complex 3 could detect Cu2+ and Ag+via quenching effect.

Construction of Three-Dimensional Cobalt(II)-Based Metal–Organic Frameworks by Synergy between Rigid and Semirigid Ligands

2012 ◽  
Vol 12 (11) ◽  
pp. 5529-5534 ◽  
Author(s):  
Weiting Yang ◽  
Min Guo ◽  
Fei-Yan Yi ◽  
Zhong-Ming Sun
Keyword(s):  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Metal Organic

Accurate tuning of rare earth metal–organic frameworks with unprecedented topology for white-light emission

2020 ◽  
Vol 8 (4) ◽  
pp. 1374-1379 ◽  
Author(s):  
Yutong Wang ◽  
Kai Zhang ◽  
Xiaokang Wang ◽  
Xuelian Xin ◽  
Xiurong Zhang ◽  
...  
Keyword(s):  
White Light ◽  
Light Emission ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Earth Metal ◽  
White Light Emission ◽  
One Dimensional ◽  
1D Chain ◽  
Secondary Building Units ◽  
Metal Organic

An unprecedented three-dimensional (3D) (3,4,5)-czkf topological framework (UPC-38) with one-dimensional (1D) chain secondary building units exhibits strong white light emission.

scholarly journals Cyclodextrins Modified/Coated Metal–Organic Frameworks

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1273 ◽  
Author(s):  
Huacheng Zhang ◽  
Zhaona Liu ◽  
Jian Shen
Keyword(s):  
Hybrid Materials ◽  
Metal Organic Frameworks ◽  
Supramolecular Interactions ◽  
Future Research ◽  
Covalent Bonds ◽  
Characterization Methods ◽  
Coated Metal ◽  
Metal Organic ◽  
Future Research Directions ◽  
External Stimuli

Recent progress about a novel organic–inorganic hybrid materials, namely cyclodextrins (CDs) modified/coated metal–organic frameworks (MOFs) is summarized by using a special categorization method focusing on the interactions between CDs and MOFs moieties, such as ligand–metal cations interactions, supramolecular interactions including host–guest interactions and hydrogen bonding, as well as covalent bonds. This review mainly focuses on the interactions between CDs and MOFs and the strategy of combining them together, diverse external stimuli responsiveness of CDs-modified/coated MOFs, as well as applications of these hybrid materials to drug delivery and release system, catalysis and detection materials. Additionally, due to the importance of investigating advanced chemical architectures and physiochemical properties of CDs-modified/coated MOFs, a separate section is involved in diverse characterization methods and instruments. Furthermore, this minireview also foresees future research directions in this rapidly developing field.

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.

Sign in / Sign up

Export Citation Format

Share Document