Effective Dual-Functional Metal-Organic Framework (DF-MOF) as a Catalyst for the Solvent-Free Cycloaddition Reaction.

A new porous metal-organic framework, [Co (oba) (bpdh)]·(DMF) (TMU-63), containing accessible nitrogen-rich diazahexadiene groups was successfully prepared with the solvothermal assembly of 5-bis(4-pyridyl)-3,4-diaza-2,4-hexadiene (4-bpdh), 4,4'-oxybis(benzoic) acid (oba), and Co(II) ions. The combination of Lewis basic functional groups and porosity leads to high performance in CO adsorption and conversion in the cycloaddition reaction of epoxides under solvent-free conditions. To further enhance the catalytic efficiency of TMU-63, we introduced a highly acidic malonamide ligand into the structure solvent-assisted ligand exchange (SALE) as a postsynthesis method.

Ultrasound Irradiation Assisted Synthesis of Luminescent Nano Amide-Functionalized Metal-Organic Frameworks; Application Toward Phenol Derivatives Sensing.

Two nano amide-functionalized metal-organic frameworks (MOFs) with molecular formula [Co(oba) (bpta)]·(DMF) TMU-50 and [Co(oba) (bpfn)]·(DMF) TMU-51 obtained under ultrasonic method without any surfactants. The only difference between the two selected amide functionalized pillar ligands, N,N'-bis(4-pyridinyl)-terephthalamide (bpta), and N,N'-bis-(4-pyridylformamide)-1,5-naphthalenediamine (bpfn), is related to the naphthyl group, which led to the different luminescence properties of the nano frameworks. In this study, the special ability of the luminescent nano MOFs were investigated to sensitize nitroaromatic compounds.

Rational morphology control of nano-scale amide decorated metal-organic frameworks by ultrasonic method: Capability to selective and sensitive detection of nitro explosives.

One of the key challenges in rational design and synthesis of metal-organic frameworks (MOFs) is defined control over size and morphology for using these materials in many more advanced applications. Combining ultrasonic method and capping groups makes it possible to control the size and change the morphology of metal organic frameworks without changing material compositions. Nano TMU-46, 47 and 48 with copper metal center and amide functionalized pillar were synthesized by using ultrasonic irritation and characterized by FE-SEM, powder X-ray diffraction, elemental analysis, and FTIR spectroscopy.

Coordinatively unsaturated metal sites (open metal sites) in metal-organic frameworks: design and applications.

Metal-organic frameworks (MOFs) can contain open metal sites (OMS) or coordinatively unsaturated sites (CUS) or open coordination sites (OCS) when vacant Lewis acid sites on the metal ions or cluster nodes have been generated. This review combines for the first time all aspects of OMS in MOFs, starting from different preparation strategies over theoretical studies on the effects of OMS with host-guest interactions up to distinct OMS-MOF applications. In the experimental part the focus of this review is on MOFs with proven OMS formation which are not only invoked but are clearly verified by analytical methods.

The targeted design of dual-functional metal-organic frameworks (DF-MOFs) as highly efficient adsorbents for Hg ions: synthesis for purpose.

Designing adsorbents with accessible chelating sites and achieving high contaminant purification efficiency are still important to overcome environmental remediation challenges. As one of the significant global concerns, the presence of heavy metal ions in the environment has attracted increasing attention due to their toxicity, carcinogenicity, and bioaccumulation in the food chain. Herein, we performed a targeted design of a new dual-functionalized metal-organic framework (DF-MOF) by incorporating different percentages of the N1,N3-di(pyridine-4-yl) malonamide ligand (S) into urea-containing MOF (TMU-32); the produced material was labeled as TMU-32S (with 33%, 65%, and 100% incorporation percentages).

Solvent-assisted ligand exchange (SALE) for the enhancement of epoxide ring-opening reaction catalysis based on three amide-functionalized metal-organic frameworks.

In recent years, functionalized pillar ligands have gained significant interests due to their important role in MOF structure and performance. The synthesis of MOF compounds with a particular functionalized ligand is not always successful, and sometimes, synthesis cannot be achieved easily or directly, even by employing several methods. However, this limitation can be overcome by applying a post-synthesis step that swaps the functional groups without changing the backbone of the pillar ligand.

Ultrasound assisted synthesis of amide functionalized metal-organic framework for nitroaromatic sensing.

Nano plates of zinc(II) based metal-organic framework (MOF) were prepared via ultrasonic method without any surfactants at room temperature and atmospheric pressure. Control of particle size and morphology was enhanced in this synthesis method. Nano plates of an interpenetrated amide-functionalized metal-organic framework, [Zn(oba)(bpfb)]·(DMF), TMU-23, (Hoba = 4,4'-oxybis(benzoic acid); bpfb = N,N'-bis-(4-pyridylformamide)-1,4-benzenediamine, DMF = N,N-dimethyl formamide), was synthesized under ultrasound irradiation in different concentrations of initial precursor.