Advanced Topic 715 of 1102 Inorganic Chemistry
Metal-Organic Frameworks
Porous crystalline materials built from metal nodes and organic linkers for storage and separation.
In-depth explanation of Metal-Organic Frameworks
Metal-organic frameworks, or MOFs, are crystalline porous materials built from metal ions or clusters, called nodes, joined by organic ligands that act as linkers. The result is a three-dimensional network with regular channels and cavities whose size can be tuned by changing the linkers. Surface areas can be several thousand square metres per gram. They are used for storing gases such as hydrogen and methane, for separating mixtures, as catalysts and for controlled drug delivery. Their design relies on coordination chemistry and reticular chemistry principles.
Going deeper: Metal-Organic Frameworks
Key ideas: Crystalline porous solids built from metal nodes (Zn4O clusters, Zr6, Cu paddlewheels) linked by organic carboxylate or imidazolate struts. Surface areas can exceed 7000 m2 per g, as in MOF-5 and others, compared to about 1000 for zeolites. Pore size can be tuned by linker length. Applications: gas storage (H2, CH4), CO2 capture, catalysis, sensing, drug delivery, and water harvesting from air. Prepared by solvothermal synthesis.
Common mistakes and connections: Students treat them like zeolites; MOFs are hybrid, less thermally and chemically stable, but more tunable. A porous material's surface area is measured by nitrogen adsorption (BET), and not geometric area. Pores can collapse when solvent is removed. Links to coordination chemistry, adsorption, crystal engineering and carbon capture.
Visualization of Metal-Organic Frameworks
A layered network such as graphite illustrates a porous, extended structure; MOFs link metal nodes with organic linkers into frameworks with huge surface area. The interactive lesson shows this as a live animation or chart.
Worked example and use case
MOF-5 is built from Zn4O clusters linked by terephthalate ligands and has a very high surface area.
Frequently asked questions about Metal-Organic Frameworks
What is Metal-Organic Frameworks?
Porous crystalline materials built from metal nodes and organic linkers for storage and separation.
Is Metal-Organic Frameworks a beginner, intermediate or advanced topic?
Metal-Organic Frameworks is a advanced topic in Inorganic Chemistry. It builds on beginner and intermediate topics, so review those first if needed.
What should I learn before Metal-Organic Frameworks?
Study these earlier topics in Inorganic Chemistry first: Cluster Compounds, Solid State Inorganic Structures, Perovskites.
What comes after Metal-Organic Frameworks?
The next topics in Inorganic Chemistry are Nanomaterials and Quantum Dots.
Can I practise Metal-Organic Frameworks with quizzes?
Yes. The interactive lesson includes a self-check question on Metal-Organic Frameworks, and the Inorganic Chemistry quiz draws on every topic in this area.
Where Metal-Organic Frameworks fits in Inorganic Chemistry
Metal-Organic Frameworks is topic 100 of 113 in Inorganic Chemistry.