scholarly journals Stable porphyrin Zr and Hf metal–organic frameworks featuring 2.5 nm cages: high surface areas, SCSC transformations and catalyses

2015 ◽  
Vol 6 (6) ◽  
pp. 3466-3470 ◽  
Author(s):  
Jun Zheng ◽  
Mingyan Wu ◽  
Feilong Jiang ◽  
Weiping Su ◽  
Maochun Hong
Keyword(s):  
High Surface ◽  
Metal Organic Frameworks ◽  
Surface Areas ◽  
Metal Organic

Two isostructural porphyrin Zr and Hf metal–organic frameworks (FJI-H6 and FJI-H7) are rationally synthesized, and are constructed from 2.5 nm cubic cages.

scholarly journals Recent Trends in Covalent and Metal Organic Frameworks for Biomedical Applications

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 916 ◽  
Author(s):  
Georges Chedid ◽  
Ali Yassin
Keyword(s):  
Drug Delivery ◽  
Biomedical Applications ◽  
Materials Science ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
Great Promise ◽  
Surface Areas ◽  
Metal Organic ◽  
New Type ◽  
Recent Trends

Materials science has seen a great deal of advancement and development. The discovery of new types of materials sparked the study of their properties followed by applications ranging from separation, catalysis, optoelectronics, sensing, drug delivery and biomedicine, and many other uses in different fields of science. Metal organic frameworks (MOFs) and covalent organic frameworks (COFs) are a relatively new type of materials with high surface areas and permanent porosity that show great promise for such applications. The current study aims at presenting the recent work achieved in COFs and MOFs for biomedical applications, and to examine some challenges and future directions which the field may take. The paper herein surveys their synthesis, and their use as Drug Delivery Systems (DDS), in non-drug delivery therapeutics and for biosensing and diagnostics.

Metal–organic framework thin films: electrochemical fabrication techniques and corresponding applications & perspectives

2016 ◽  
Vol 4 (32) ◽  
pp. 12356-12369 ◽  
Author(s):  
Wei-Jin Li ◽  
Min Tu ◽  
Rong Cao ◽  
Roland A. Fischer
Keyword(s):  
Thin Films ◽  
Metal Organic Framework ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
Industrial Applications ◽  
Surface Areas ◽  
Metal Organic ◽  
Electrochemical Fabrication ◽  
Organic Framework

Metal–organic frameworks (MOFs) hold tremendous promise for various academic and industrial applications because of their structural merits (e.g., high surface areas, enormous porosity, and regular order).

scholarly journals Recent Progress in Heavy Metal Ion Decontamination Based on Metal–Organic Frameworks

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1481
Author(s):  
Yajie Chen ◽  
Xue Bai ◽  
Zhengfang Ye
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
Environmental Safety ◽  
Surface Areas ◽  
Effective Removal ◽  
Pore Size Distributions ◽  
Metal Organic

Heavy metals are inorganic pollutants which pose a serious threat to human and environmental safety, and their effective removal is becoming an increasingly urgent issue. Metal–organic frameworks (MOFs) are a novel group of crystalline porous materials, which have proven to be promising adsorbents because of their extremely high surface areas, optimizable pore volumes and pore size distributions. This study is a systematic review of the recent research on the removal of several major heavy metal ions by MOFs. Based on the different structures of MOFs, varying adsorption capacity can be achieved, ranging from tens to thousands of milligrams per gram. Many MOFs have shown a high selectivity for their target metal ions. The corresponding mechanisms involved in capturing metal ions are outlined and finally, the challenges and prospects for their practical application are discussed.

scholarly journals Crystalline metal-organic frameworks (MOFs): synthesis, structure and function

2013 ◽  
Vol 70 (1) ◽  
pp. 3-10 ◽  
Author(s):  
Chandan Dey ◽  
Tanay Kundu ◽  
Bishnu P. Biswal ◽  
Arijit Mallick ◽  
Rahul Banerjee
Keyword(s):  
High Surface ◽  
Metal Organic Frameworks ◽  
Structural Diversity ◽  
Hybrid Network ◽  
Solid Materials ◽  
Guest Molecules ◽  
Surface Areas ◽  
Metal Organic ◽  
And Function ◽  
Crystalline Metal

Metal-organic frameworks (MOFs) are a class of hybrid network supramolecular solid materials comprised of organized organic linkers and metal cations. They can display enormously high surface areas with tunable pore size and functionality, and can be used as hosts for a range of guest molecules. Since their discovery, MOFs have experienced widespread exploration for their applications in gas storage, drug delivery and sensing. This article covers general and modern synthetic strategies to prepare MOFs, and discusses their structural diversity and properties with respect to application perspectives.

Deducing CO2 motion, adsorption locations and binding strengths in a flexible metal–organic framework without open metal sites

2016 ◽  
Vol 18 (12) ◽  
pp. 8327-8341 ◽  
Author(s):  
Yue Zhang ◽  
Bryan E. G. Lucier ◽  
Yining Huang
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Variable Temperature ◽  
Metal Organic Framework ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
Surface Areas ◽  
Open Metal Sites ◽  
Metal Organic ◽  
Flexible Metal

Microporous metal–organic frameworks (MOFs) have high surface areas and porosities, and are well-suited for CO2 capture. Several important details regarding CO2 capture in the flexible MIL-53 MOF are revealed from variable-temperature solid-state NMR experiments.

Hydrolytically stable ZIF-8@PDMS core–shell microspheres for gas–solid chromatographic separation

RSC Advances ◽  
2016 ◽  
Vol 6 (16) ◽  
pp. 13426-13432 ◽  
Author(s):  
Manju Srivastava ◽  
Prasun Kumar Roy ◽  
Arunachalam Ramanan
Keyword(s):  
Stationary Phase ◽  
Chromatographic Separation ◽  
Active Sites ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
Shape Selectivity ◽  
Core Shell ◽  
Surface Areas ◽  
Metal Organic

Metal organic frameworks (MOFs) with exceptionally high surface areas, shape selectivity and availability of multiple active sites are suitable materials to serve as solid stationary phase for chromatographic applications.

scholarly journals Competitive formation between 2D and 3D metal-organic frameworks: insights into the selective formation and lamination of a 2D MOF

IUCrJ ◽  
2019 ◽  
Vol 6 (4) ◽  
pp. 681-687 ◽  
Author(s):  
Sojin Oh ◽  
Jeehyun Park ◽  
Moonhyun Oh
Keyword(s):  
Active Sites ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
Building Blocks ◽  
Structural Features ◽  
Ultrasonic Dispersion ◽  
Surface Areas ◽  
Metal Organic ◽  
Physical Stimuli ◽  
Selective Formation

The structural dimension of metal–organic frameworks (MOFs) is of great importance in defining their properties and thus applications. In particular, 2D layered MOFs are of considerable interest because of their useful applications, which are facilitated by unique structural features of 2D materials, such as a large number of open active sites and high surface areas. Herein, this work demonstrates a methodology for the selective synthesis of a 2D layered MOF in the presence of the competitive formation of a 3D MOF. The ratio of the reactants, metal ions and organic building blocks used during the reaction is found to be critical for the selective formation of a 2D MOF, and is associated with its chemical composition. In addition, the well defined and uniform micro-sized 2D MOF particles are successfully synthesized in the presence of an ultrasonic dispersion. Moreover, the laminated 2D MOF layers are directly synthesized via a modified bottom-up lamination method, a combination of chemical and physical stimuli, in the presence of surfactant and ultrasonication.

Hetero-Epitaxial Approach by Using Labile Coordination Sites to Prepare Catenated Metal-Organic Frameworks with High Surface Areas

2014 ◽  
Vol 20 (13) ◽  
pp. 3595-3599 ◽  
Author(s):  
Nianyong Zhu ◽  
Matthew J. Lennox ◽  
Gerard Tobin ◽  
Lisa Goodman ◽  
Tina Düren ◽  
...  
Keyword(s):  
High Surface ◽  
Metal Organic Frameworks ◽  
Surface Areas ◽  
Coordination Sites ◽  
Metal Organic

Monomolecular sheets of propeller-shaped triethyl 4,4′,4′′-[benzene-1,3,5-triyltris(ethyne-2,1-diyl)]tribenzoate deuterochloroform monosolvate

2014 ◽  
Vol 70 (10) ◽  
pp. 937-940
Author(s):  
Nikola Ž. Knežević ◽  
Sladjana B. Novaković ◽  
Goran A. Bogdanović
Keyword(s):  
Benzene Ring ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
Threefold Axis ◽  
Π Interactions ◽  
Surface Areas ◽  
Compound C ◽  
Weak Hydrogen Bonds ◽  
Metal Organic ◽  
Centrosymmetric Dimers

The title compound, C39H30O6·CDCl3, has a chemical threefold axis and an approximately planar structure, with an ethoxycarbonyl substituent on each of the terminal benzenes oriented in the same direction, thus forming a propeller-shaped molecule. This molecule is of particular interest in the field of metal–organic frameworks (MOFs), where its hydrolyzed analogue forms MOF structures with high surface areas. The benzene ring which occupies the centre of the molecule forms π–π interactions to the equivalent benzene ring at a perpendicular distance of 3.32 (1) Å. Centrosymmetric dimers formed in this way are interconnected by intermolecular C—H...π interactions with a rather short H...CgAdistance of 2.51 Å (CgAis the centroid of the central benzene ring). The molecules are arranged in regular parallel sheets. Within a sheet, molecules are interconnectedviaC—H...O interactions where all carbonyl O atoms participate in weak hydrogen bonds as hydrogen-bond acceptors. Neighbouring sheets are connected through the above-mentioned π–π and C—H...π interactions.

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