scholarly journals Constructing new metal–organic frameworks with complicated ligands from “One-Pot” in situ reactions

2019 ◽  
Vol 10 (14) ◽  
pp. 3949-3955 ◽  
Author(s):  
Xiang-Jing Kong ◽  
Tao He ◽  
Yong-Zheng Zhang ◽  
Xue-Qian Wu ◽  
Si-Nan Wang ◽  
...  

A “One-Pot” strategy has been developed to construct new metal–organic frameworks with complicated ligands from simple precursors by integrating organic and coordination chemistry.

2019 ◽  
Author(s):  
Benjamin Slater ◽  
So-On Wong ◽  
Andrew Duckworth ◽  
Andrew J. P. White ◽  
Matthew R. Hill ◽  
...  

<p>Waste PLA can be upcycled to metal organic frameworks of potential high value in a one-pot synthesis scheme, where PLA depolymerisation occurs <i>in-situ</i>. Three lactate based frameworks were succesfully synthesised and characterised from PLA as a feed source, including homochiral framework ZnBLD. The chiral separation ability of ZnBLD was maintained.<br></p><p><br></p><p>Additional data including the CIF file, the CheckCIF document, and the raw XRD spectra, are available from the Zenodo repository linked below.<br></p>


2020 ◽  
Vol 56 (86) ◽  
pp. 13177-13180
Author(s):  
Fu-Gui Xi ◽  
Wei Sun ◽  
Zhi-yun Dong ◽  
Ning-Ning Yang ◽  
Teng Gong ◽  
...  

Tertiary aliphatic amino modified UiO-67/66(Zr), IRMOF-n(Zn) and MIL-101(Fe) were synthesized by a facile and efficient one-pot strategy under the corresponding metal catalysis.


2019 ◽  
Author(s):  
Benjamin Slater ◽  
So-On Wong ◽  
Andrew Duckworth ◽  
Andrew J. P. White ◽  
Matthew R. Hill ◽  
...  

<p>Waste PLA can be upcycled to metal organic frameworks of potential high value in a one-pot synthesis scheme, where PLA depolymerisation occurs <i>in-situ</i>. Three lactate based frameworks were succesfully synthesised and characterised from PLA as a feed source, including homochiral framework ZnBLD. The chiral separation ability of ZnBLD was maintained.<br></p><p><br></p><p>Additional data including the CIF file, the CheckCIF document, and the raw XRD spectra, are available from the Zenodo repository linked below.<br></p>


Author(s):  
Stephen J. I. Shearan ◽  
Jannick Jacobsen ◽  
Ferdinando Costantino ◽  
Roberto D’Amato ◽  
Dmitri Novikov ◽  
...  

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 722
Author(s):  
Ioanna Christodoulou ◽  
Tom Bourguignon ◽  
Xue Li ◽  
Gilles Patriarche ◽  
Christian Serre ◽  
...  

In recent years, Metal-Organic Frameworks (MOFs) have attracted a growing interest for biomedical applications. The design of MOFs should take into consideration the subtle balance between stability and biodegradability. However, only few studies have focused on the MOFs’ stability in physiological media and their degradation mechanism. Here, we investigate the degradation of mesoporous iron (III) carboxylate MOFs, which are among the most employed MOFs for drug delivery, by a set of complementary methods. In situ AFM allowed monitoring with nanoscale resolution the morphological, dimensional, and mechanical properties of a series of MOFs in phosphate buffer saline and in real time. Depending on the synthetic route, the external surface presented either well-defined crystalline planes or initial defects, which influenced the degradation mechanism of the particles. Moreover, MOF stability was investigated under different pH conditions, from acidic to neutral. Interestingly, despite pronounced erosion, especially at neutral pH, the dimensions of the crystals were unchanged. It was revealed that the external surfaces of MOF crystals rapidly respond to in situ changes of the composition of the media they are in contact with. These observations are of a crucial importance for the design of nanosized MOFs for drug delivery applications.


Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1679
Author(s):  
Roberta Puglisi ◽  
Anna L. Pellegrino ◽  
Roberto Fiorenza ◽  
Salvatore Scirè ◽  
Graziella Malandrino

Gadolinium metal-organic frameworks (Gd-MOFs) and Eu-doped Gd-MOFs have been synthesized through a one-pot green approach using commercially available reagents. The 1,4-benzenedicarboxylic acid (H2-BDC) and 2,6-naphthalenedicarboxylic acid (H2-NDC) were chosen as ditopic organic linkers to build the 3D structure of the network. The Gd-MOFs were characterized using powder X-ray diffraction (XRD), FT-IR spectroscopy, field emission scanning electron microscopy (FE-SEM) and N2 adsorption–desorption analysis. The Gd-MOF structures were attributed comparing the XRD patterns, supported by the FT-IR spectra, with data reported in the literature for Ln-MOFs of similar lanthanide ionic radius. FE-SEM characterization points to the effect of the duration of the synthesis to a more crystalline and organized structure, with grain dimensions increasing upon increasing reaction time. The total surface area of the MOFs has been determined from the application of the Brunauer–Emmett–Teller method. The study allowed us to correlate the processing conditions and ditopic linker dimension to the network surface area. Both Gd-MOF and Eu-doped Gd-MOF have been tested for sensing of the inorganic ions such as Fe3+ and Cr2O72−.


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