A molecular-level superhydrophobic external surface to improve the stability of metal–organic frameworks

2017 ◽  
Vol 5 (35) ◽  
pp. 18770-18776 ◽  
Author(s):  
Yuxiu Sun ◽  
Qi Sun ◽  
Hongliang Huang ◽  
Briana Aguila ◽  
Zheng Niu ◽  
...  
Keyword(s):  
Molecular Level ◽  
External Surface ◽  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Metal Organic ◽  
Crystalline Nature ◽  
The Stability

A facile and reliable molecular-level modification strategy was developed to impart superhydrophobicity to the external surface of porous metal–organic frameworks. The obtained Zr-based MOFs well inherit their original crystalline nature and remain stable under various conditions.

scholarly journals Degradation Mechanism of Porous Metal-Organic Frameworks by In Situ Atomic Force Microscopy

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 722
Author(s):  
Ioanna Christodoulou ◽  
Tom Bourguignon ◽  
Xue Li ◽  
Gilles Patriarche ◽  
Christian Serre ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Degradation Mechanism ◽  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Force Microscopy ◽  
Atomic Force ◽  
Metal Organic ◽  
The Media ◽  
Ph Conditions

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.

Supermolecular Building Blocks (SBBs) for the Design and Synthesis of Highly Porous Metal-Organic Frameworks

2008 ◽  
Vol 130 (6) ◽  
pp. 1833-1835 ◽  
Author(s):  
Farid Nouar ◽  
Jarrod F. Eubank ◽  
Till Bousquet ◽  
Lukasz Wojtas ◽  
Michael J. Zaworotko ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Building Blocks ◽  
Design And Synthesis ◽  
Metal Organic ◽  
Highly Porous

Fabrication of lanthanum linked trimesic acid as porous metal organic frameworks for effective nitrate and phosphate adsorption

2021 ◽  
pp. 122446
Author(s):  
Ilango Aswin Kumar ◽  
Antonysamy Jeyaseelan ◽  
Natrayasamy Viswanathan ◽  
Mu Naushad ◽  
Artur J.M. Valente
Keyword(s):  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Phosphate Adsorption ◽  
Trimesic Acid ◽  
Metal Organic

Encapsulation and controlled release of fragrances from functionalized porous metal-organic frameworks

AIChE Journal ◽  
2018 ◽  
Vol 65 (2) ◽  
pp. 491-499 ◽  
Author(s):  
Yuhang Liu ◽  
Yuxiang Wang ◽  
Jianxiang Huang ◽  
Zhuxian Zhou ◽  
Dan Zhao ◽  
...  
Keyword(s):  
Controlled Release ◽  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Metal Organic

Polysaccharide templated biomimetic growth of hierarchically porous metal-organic frameworks

2020 ◽  
Vol 306 ◽  
pp. 110429 ◽  
Author(s):  
Nisrine Hammi ◽  
Samir El Hankari ◽  
Nadia Katir ◽  
Nathalie Marcotte ◽  
Khalid Draoui ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Hierarchically Porous ◽  
Metal Organic
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