Active metal single-sites based on metal–organic frameworks: construction and chemical prospects

2021 ◽  
Author(s):  
Yiyang Sun ◽  
Qiuzheng Du ◽  
Fangqi Wang ◽  
Pierre Dramou ◽  
Hua He
Keyword(s):  
Single Point ◽  
Metal Organic Frameworks ◽  
Design Strategy ◽  
Active Metal ◽  
Metal Organic

Metal single-point is a novel and potential design strategy that has been applied for the development of metal organic frameworks.

SERS-active metal–organic frameworks with embedded gold nanoparticles

The Analyst ◽  
2017 ◽  
Vol 142 (14) ◽  
pp. 2640-2647 ◽  
Author(s):  
Xiaolin Cao ◽  
Sihui Hong ◽  
Zejun Jiang ◽  
Yongxin She ◽  
Shanshan Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Raman Scattering ◽  
Metal Organic Frameworks ◽  
Surface Enhanced Raman Scattering ◽  
Active Metal ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Metal Organic ◽  
Enhanced Raman Scattering

Surface-enhanced Raman scattering (SERS) has been widely used in the detection of targets and strongly depends on the interaction and the distance between the targets and nanoparticles.

Ultrafast assembly of swordlike Cu3(1,3,5-benzenetricarboxylate)n metal–organic framework crystals with exposed active metal sites

2020 ◽  
Vol 5 (7) ◽  
pp. 1050-1057 ◽  
Author(s):  
Heba Ahmed ◽  
Xinci Yang ◽  
Yemima Ehrnst ◽  
Ninweh N. Jeorje ◽  
Susan Marqus ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Large Aspect Ratio ◽  
Metal Site ◽  
Site Density ◽  
Active Metal ◽  
Metal Organic ◽  
Enhanced Conductivity ◽  
Organic Framework

A new acoustomicrofluidic method for synthesizing copper-based metal–organic frameworks is shown to yield novel large aspect ratio elongated crystal morphologies with high active metal site density on their surfaces, leading to enhanced conductivity.

Vapor phase detection of nitroaromatic and nitroaliphatic explosives by fluorescence active metal–organic frameworks

CrystEngComm ◽  
2013 ◽  
Vol 15 (45) ◽  
pp. 9745 ◽  
Author(s):  
Debasis Banerjee ◽  
Zhichao Hu ◽  
Sanhita Pramanik ◽  
Xiao Zhang ◽  
Hao Wang ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Metal Organic Frameworks ◽  
Phase Detection ◽  
Active Metal ◽  
Metal Organic

scholarly journals Development of Phosphonate Monoesters Building Units in Metal-Organic Frameworks

2014 ◽  
Vol 70 (a1) ◽  
pp. C1127-C1127
Author(s):  
Benjamin Gelfand ◽  
Jian-Bin Lin ◽  
George Shimizu
Keyword(s):  
Metal Organic Frameworks ◽  
Design Strategy ◽  
Layered Material ◽  
Water Stability ◽  
New Materials ◽  
Isopropyl Esters ◽  
Porous Framework ◽  
Metal Atoms ◽  
Metal Organic ◽  
Ester Moiety

The use of predictable coordination geometries and the development of new ligands has allowed supramolecular chemists to design a plethora of new materials. Among these are metal-organic frameworks (MOFs), which are composed of ligands coordinating to metal atoms or clusters to generate a framework with potential porosity. MOFs exemplify supramolecular design strategy as their extended structure and tunable properties allow them to be applied for various applications.1 To date, many MOFs utilize carboxylates as the coordinating group since they have well studied coordination geometries and thus predictable framework topologies. Though there are examples of carboxylate-based MOFs possessing water stability, most do not possess this key feature, hindering their application in industrial settings. Phosphonate monoesters (PMEs) have been investigated as a means to impart water stability to a MOF by kinetically shielding the linker-metal bond with the ester moiety.2 Unfortunately, phosphonate monoesters have relatively unexplored coordination geometries, with most studies focusing on chlodronic acid and its derivatives, which do not typically form porous materials. In an attempt to establish building units based on PMEs, 1,4-benzenediphosphonate monoester ligands have been synthesized, coordinated to Cu(II), and characterized. It was found that while the methyl and ethyl analogues form similar 3-D structures with poor water stability,3 the isopropyl analogue forms a layered material possessing water stability. The isopropyl analogue contains chains of Cu-PME, with the isopropyl esters lying directly above and below the Cu atoms, kinetically shielding this bond from water. This water stable building unit was predicted to generate a porous framework with non-linear ligands. To test this hypothesis, 1,3,5-benzenetriphosphonate monoisopropyl ester was synthesized and coordinated to Cu(II). Unfortunately, no single crystal of sufficient quality has been produced, though a predicted and refined structure matches well to various characterization techniques. As predicted, this material is porous and does not degrade in harsh humid conditions (353K and 90% relative humidity).

Engineering Metal-Organic Framework-Based Nanozymes for Enhanced Biosensing

2021 ◽  
Vol 17 ◽  
Author(s):  
Weiqing Xu ◽  
Yu Wu ◽  
Lei Jiao ◽  
Wenling Gu ◽  
Dan Du ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Design Strategy ◽  
Good Stability ◽  
Coordination Structure ◽  
Research Directions ◽  
Recent Advances ◽  
Metal Organic ◽  
Catalytic Mechanisms

Background: Nanozymes are a kind of emerging nanomaterials that can mimic the catalytic activity of natural enzymes with good stability. Objective: Benefited by the unique coordination structure and constitution, metal-organic frameworks (MOFs) have been widely exploited as novel nanozymes. Importantly, various MOFs engineered with fascinating functions provide great opportunities to enhance their enzyme-like activity and improve their applied performance, achieving the goal of vividly mimicking natural enzymes. Conclusion: This review summarized recent advances in the fabrication of the MOFs-based nanozymes and their applications in biosensing. First, MOFs-based nanomaterials containing pristine MOFs, functionalized MOFs, MOFs-based composites and MOFs derivatives are introduced, where the design strategy, enzyme-like activity and the catalytic mechanisms are highlighted systematically. Then, their applications in various target assays are summarized. Finally, the challenges and possible research directions for the development and application of MOFs-based nanozymes are provided.

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