scholarly journals Intrinsically porous molecular building blocks for metal organic frameworks tailored by the bridging effect of counter cations

CrystEngComm ◽  
2020 ◽  
Vol 22 (17) ◽  
pp. 2889-2894 ◽  
Author(s):  
Peng Yang ◽  
Buthainah Alshankiti ◽  
Niveen M. Khashab
Keyword(s):  
Porous Materials ◽  
Rational Design ◽  
Molecular Level ◽  
Metal Organic Frameworks ◽  
Building Blocks ◽  
Molecular Building Blocks ◽  
Metal Organic ◽  
Design And Construction

Intrinsically porous molecular building blocks are used for the rational design and construction of molecular-level controlled porous materials.

scholarly journals Minimal edge-transitive nets for the design and construction of metal–organic frameworks

2017 ◽  
Vol 201 ◽  
pp. 127-143 ◽  
Author(s):  
Zhijie Chen ◽  
Hao Jiang ◽  
Michael O’Keeffe ◽  
Mohamed Eddaoudi
Keyword(s):  
Rational Design ◽  
Metal Organic Frameworks ◽  
Building Blocks ◽  
Hexagonal Prism ◽  
Design And Synthesis ◽  
Building Unit ◽  
Molecular Building Blocks ◽  
Metal Organic ◽  
Edge Transitive ◽  
Design And Construction

Highly-connected and minimal edge-transitive nets (with one or two kinds of edge) can be regarded as ideal blueprints for the rational design and construction of metal–organic frameworks (MOFs). Here we report and affirm the prominence of highly-connected nets as suitable targets in reticular chemistry for the design and synthesis of MOFs. Of special interest are augmented highly-connected binodal edge-transitive nets embedding a unique and precise positioning and connectivity of the net vertex figures, regarded as net-coded building units (net-cBUs). Explicitly, a definitenet-cBU encompasses precise geometrical information that codes a selected net uniquely and matchlessly, a compelling perquisite for the rational design of MOFs. Interestingly, the double six-membered ring (d6R) building unit offers great potential to be used as anet-cBU for the deliberate reticulation of the sole two edge-transitive nets with a vertex figure as a d6R, namely the (4,12)-coordinatedshpnet (square and hexagonal prism) and the (6,12)-coordinatedalbnet (aluminium diboride, hexagonal prism and trigonal prism). We envisioned and proposed various MOF structures based on the derivedshpandalbnets. Gaining access to the requisitenet-cBUs is essential for the successful practice of reticular chemistry; correspondingly organic and inorganic chemistries were deployed to afford concomitant molecular building blocks (MBBs) with the looked-for shape and connectivity. Practically, the combination of the 12-connected (12-c) rare-earth (RE) polynuclear, points of extension matching the 12 vertices of the hexagonal prism (d6R) with a 4-connected tetracarboxylate ligand or a 6-connected hexacarboxylate ligand afforded the targetedshp-MOF oralb-MOF, respectively. A dodecacarboxylate ligand can be conceived as, and is shown to be, a compatible 12-c MBB, plausibly affording the positioning of the carbon centers of the twelve carboxylate groups on the vertices of the desired hexagonal prism building unit, and combined with the complementary 4-c copper paddlewheel [Cu2(O2C–)4] cluster or 6-c metal trinuclear [M3O(O2C–)6] clusters/zinc tetranulcear [Zn4O(O2C–)6] clusters to credibly afford the construction of new MOF structures with underlying topologies based on derivedshpandalbnets.

Evaluating topologically diverse metal–organic frameworks for cryo-adsorbed hydrogen storage

2016 ◽  
Vol 9 (10) ◽  
pp. 3279-3289 ◽  
Author(s):  
Diego A. Gómez-Gualdrón ◽  
Yamil J. Colón ◽  
Xu Zhang ◽  
Timothy C. Wang ◽  
Yu-Sheng Chen ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Porous Materials ◽  
Metal Organic Frameworks ◽  
Building Blocks ◽  
Adsorbed Hydrogen ◽  
Molecular Building Blocks ◽  
Metal Organic ◽  
Inorganic And Organic

Metal–organic frameworks (MOFs) are porous materials synthesized by combining inorganic and organic molecular building blocks into crystalline networks of distinct topologies.

A Molecular Artisans Guide to Supramolecular Coordination Complexes and Metal Organic Frameworks

2015 ◽  
Vol 03 (01n02) ◽  
pp. 1540004 ◽  
Author(s):  
Xialu Wu ◽  
David J. Young ◽  
T. S. Andy Hor
Keyword(s):  
Chemical Reactivity ◽  
Metal Organic Frameworks ◽  
Building Blocks ◽  
Coordination Complexes ◽  
Large Molecules ◽  
Molecular Building Blocks ◽  
Supramolecular Coordination ◽  
Metal Organic ◽  
Molecular Synthesis ◽  
And Function

As molecular synthesis advances, we are beginning to learn control of not only the chemical reactivity (and function) of molecules, but also of their interactions with other molecules. It is this basic idea that has led to the current explosion of supramolecular science and engineering. Parallel to this development, chemists have been actively pursuing the design of very large molecules using basic molecular building blocks. Herein, we review the general development of supramolecular chemistry and particularly of two new branches: supramolecular coordination complexes (SCCs) and metal organic frameworks (MOFs). These two fields are discussed in detail with typical examples to illustrate what is now possible and what challenges lie ahead for tomorrow's molecular artisans.

Reticular Chemistry and Metal-Organic Frameworks for Clean Energy

MRS Bulletin ◽  
2009 ◽  
Vol 34 (9) ◽  
pp. 682-690 ◽  
Author(s):  
Omar M. Yaghi ◽  
Qiaowei Li
Keyword(s):  
Carbon Dioxide ◽  
Metal Organic Frameworks ◽  
Clean Energy ◽  
Building Blocks ◽  
Zeolitic Imidazolate Frameworks ◽  
Design Concepts ◽  
Surface Areas ◽  
Molecular Building Blocks ◽  
Metal Organic ◽  
Molecular Aspects

AbstractReticular chemistry concerns the linking of molecular building blocks into predetermined structures using strong bonds. We have been working on creating and developing the conceptual and practical basis of this new area of research. As a result, new classes of crystalline porous materials have been designed and synthesized: metal-organic frameworks, zeolitic imidazolate frameworks, and covalent organic frameworks. Crystals of this type have exceptional surface areas (2,000−6,000 m2/g) and take up voluminous amounts of hydrogen (7.5 wt% at 77 K and 3−4 × 106 Pa), methane (50 wt% at 298 K and 2.5 × 106 Pa), and carbon dioxide (140 wt% at 298 K and 3 × 106 Pa). We have driven the basic science all the way to applications without losing sight of our quest for understanding the underlying molecular aspects of this chemistry. The presentation was focused on the design concepts, synthesis, and structure of these materials, with emphasis on their applications to onboard energy storage.

Remote Stabilization of Copper Paddlewheel Based Molecular Building Blocks in Metal–Organic Frameworks

2015 ◽  
Vol 27 (6) ◽  
pp. 2144-2151 ◽  
Author(s):  
Wen-Yang Gao ◽  
Rong Cai ◽  
Tony Pham ◽  
Katherine A. Forrest ◽  
Adam Hogan ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Building Blocks ◽  
Molecular Building Blocks ◽  
Metal Organic

scholarly journals Redox Activity as a Powerful Strategy to Tune Magnetic and/or Conducting Properties in Benzoquinone-Based Metal-Organic Frameworks

2021 ◽  
Vol 7 (8) ◽  
pp. 109
Author(s):  
Noemi Monni ◽  
Mariangela Oggianu ◽  
Suchithra Ashoka Sahadevan ◽  
Maria Laura Mercuri
Keyword(s):  
Electrode Materials ◽  
Metal Organic Frameworks ◽  
Future Generation ◽  
Building Blocks ◽  
Redox Activity ◽  
Semiquinone Radical ◽  
Molecular Building Blocks ◽  
Redox Active ◽  
Metal Organic ◽  
Selection Of

Multifunctional molecular materials have attracted material scientists for several years as they are promising materials for the future generation of electronic devices. Careful selection of their molecular building blocks allows for the combination and/or even interplay of different physical properties in the same crystal lattice. Incorporation of redox activity in these networks is one of the most appealing and recent synthetic strategies used to enhance magnetic and/or conducting and/or optical properties. Quinone derivatives are excellent redox-active linkers, widely used for various applications such as electrode materials, flow batteries, pseudo-capacitors, etc. Quinones undergo a reversible two-electron redox reaction to form hydroquinone dianions via intermediate semiquinone radical formation. Moreover, the possibility to functionalize the six-membered ring of the quinone by various substituents/functional groups make them excellent molecular building blocks for the construction of multifunctional tunable metal-organic frameworks (MOFs). An overview of the recent advances on benzoquinone-based MOFs, with a particular focus on key examples where magnetic and/or conducting properties are tuned/switched, even simultaneously, by playing with redox activity, is herein envisioned.

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