scholarly journals Pseudo-5-Fold-Symmetrical Ligand Drives Geometric Frustration in Porous Metal–Organic and Hydrogen-Bonded Frameworks

2020 ◽  
Vol 142 (32) ◽  
pp. 13839-13845
Author(s):  
Frederik Haase ◽  
Gavin A. Craig ◽  
Mickaële Bonneau ◽  
Kunihisa Sugimoto ◽  
Shuhei Furukawa
Keyword(s):  
Porous Metal ◽  
Geometric Frustration ◽  
Metal Organic ◽  
Hydrogen Bonded

A Pseudo Five-Fold Symmetrical Ligand Drives Geometric Frustration in Porous Metal-Organic and Hydrogen Bonded Frameworks

2020 ◽  
Author(s):  
Frederik Haase ◽  
Gavin Craig ◽  
Mickaele Bonneau ◽  
kunihisa sugimoto ◽  
Shuhei Furukawa
Keyword(s):  
Topological Defects ◽  
Porous Metal ◽  
Building Blocks ◽  
Structural Features ◽  
Equilibrium Structure ◽  
Sorption Behavior ◽  
Building Unit ◽  
Geometric Frustration ◽  
Secondary Building Units ◽  
Hydrogen Bonded

Reticular framework materials thrive on designability, but unexpected reaction outcomes are crucial in exploring new structures and functionalities. By combining “incompatible” building blocks, we employed geometric frustration in reticular materials leading to emergent structural features. The combination of a pseudo C<sub>5</sub> symmetrical organic building unit based on a pyrrole core, with a C<sub>4</sub> symmetrical copper paddlewheel synthon led to three distinct frameworks by tuning the synthetic conditions. The frameworks show structural features typical for geometric frustration: self-limiting assembly, internally stressed equilibrium structures and topological defects in the equilibrium structure, which manifested in the formation of a hydrogen bonded framework, distorted and broken secondary building units and dangling functional groups, respectively. The influence of geometric frustration on the CO<sub>2</sub> sorption behavior and the discovery of a new secondary building unit shows geometric frustration can serve as a strategy to obtain highly complex porous frameworks.

A Pseudo Five-Fold Symmetrical Ligand Drives Geometric Frustration in Porous Metal-Organic and Hydrogen Bonded Frameworks

2020 ◽  
Author(s):  
Frederik Haase ◽  
Gavin Craig ◽  
Mickaele Bonneau ◽  
kunihisa sugimoto ◽  
Shuhei Furukawa
Keyword(s):  
Topological Defects ◽  
Porous Metal ◽  
Building Blocks ◽  
Structural Features ◽  
Equilibrium Structure ◽  
Sorption Behavior ◽  
Building Unit ◽  
Geometric Frustration ◽  
Secondary Building Units ◽  
Hydrogen Bonded

Reticular framework materials thrive on designability, but unexpected reaction outcomes are crucial in exploring new structures and functionalities. By combining “incompatible” building blocks, we employed geometric frustration in reticular materials leading to emergent structural features. The combination of a pseudo C<sub>5</sub> symmetrical organic building unit based on a pyrrole core, with a C<sub>4</sub> symmetrical copper paddlewheel synthon led to three distinct frameworks by tuning the synthetic conditions. The frameworks show structural features typical for geometric frustration: self-limiting assembly, internally stressed equilibrium structures and topological defects in the equilibrium structure, which manifested in the formation of a hydrogen bonded framework, distorted and broken secondary building units and dangling functional groups, respectively. The influence of geometric frustration on the CO<sub>2</sub> sorption behavior and the discovery of a new secondary building unit shows geometric frustration can serve as a strategy to obtain highly complex porous frameworks.

Mineralization and Self‐assembly of Gold Nanoparticles using Sulfur Amino Acid Modified Hierarchically Porous Metal‐Organic Frameworks

2021 ◽  
Vol 6 (4) ◽  
pp. 712-716
Author(s):  
Xiao Liu ◽  
Yaoyu Liang ◽  
Jiayu Liu ◽  
Se Shi ◽  
Yuefei Wang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Amino Acid ◽  
Self Assembly ◽  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Sulfur Amino Acid ◽  
Hierarchically Porous ◽  
Metal Organic

Multifunctionality in an Ion-Exchanged Porous Metal–Organic Framework

2021 ◽  
Vol 143 (3) ◽  
pp. 1365-1376
Author(s):  
Sérgio M. F. Vilela ◽  
Jorge A. R. Navarro ◽  
Paula Barbosa ◽  
Ricardo F. Mendes ◽  
Germán Pérez-Sánchez ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Porous Metal ◽  
Metal Organic ◽  
Organic Framework

Hydrogen Bonded Metal–Organic Supramolecule Functionalized BiVO4 Photoanode for Enhanced Water Oxidation Efficiency

2021 ◽  
pp. 130092
Author(s):  
Yun-Xiang Ma ◽  
Bin Gao ◽  
Jianping He ◽  
Jian-Fang Ma ◽  
Yanli Zhao
Keyword(s):  
Water Oxidation ◽  
Metal Organic ◽  
Oxidation Efficiency ◽  
Hydrogen Bonded

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.

Unusual pore structure and sorption behaviour in a hexanodal zinc–organic framework material

2014 ◽  
Vol 50 (14) ◽  
pp. 1678-1681 ◽  
Author(s):  
Jinjie Qian ◽  
Feilong Jiang ◽  
Linjie Zhang ◽  
Kongzhao Su ◽  
Jie Pan ◽  
...  
Keyword(s):  
Pore Structure ◽  
Metal Organic Framework ◽  
Porous Metal ◽  
Sorption Behaviour ◽  
Metal Organic ◽  
Highly Porous ◽  
Organic Framework

A highly porous metal–organic framework structurally consists of three topological kinds of 3-connected 1,3,5-benzenetricarboxylate ligands, Zn2(COO)4, Zn3O(COO)6 and Zn4O(COO)6 SBUs, featuring a new 3,3,3,4,4,6-c hexanodal topology.

ChemInform Abstract: Superhydrophobicity in Highly Fluorinated Porous Metal-Organic Frameworks

ChemInform ◽  
2012 ◽  
Vol 43 (39) ◽  
pp. no-no
Author(s):  
Christian Serre
Keyword(s):  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Metal Organic

A three-dimensional porous metal–organic framework of unusual rob topology based on a novel fluorinated bis(imidazole) ligand

2011 ◽  
Vol 14 (11) ◽  
pp. 1819-1822 ◽  
Author(s):  
Zhi-Hui Zhang ◽  
Sheng-Chun Chen ◽  
Qun Chen ◽  
Ming-Yang He ◽  
Huan Xu
Keyword(s):  
Metal Organic Framework ◽  
Three Dimensional ◽  
Porous Metal ◽  
Imidazole Ligand ◽  
Metal Organic ◽  
Organic Framework

ChemInform Abstract: Homochiral Porous Metal-Organic Frameworks: A Step to the Future of Stereoselective Recognition and Catalysis

ChemInform ◽  
2011 ◽  
Vol 42 (18) ◽  
pp. no-no
Author(s):  
Konstantin P. Bryliakov ◽  
Evgenii P. Talsi
Keyword(s):  
Metal Organic Frameworks ◽  
Porous Metal ◽  
The Future ◽  
Metal Organic
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