2025 Nobel Prize in Chemistry for Metal-Organic Frameworks
Why focus: Metal-Organic Frameworks (MOFs) are classic UPSC sci-tech proxies. Expect 'Applications of MOFs' in a How-Many-Correct format (GS3).
In News
What Happened
Why It Matters
Background
History & Context
What Changed
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Structural Stability: BEFORE, early coordination networks like Robson's 1989 copper models collapsed easily when the solvent was removed. NOW, Yaghi's MOF-5 and subsequent designs maintain rigid, highly porous architectures even under high temperatures and without solvents.
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Gas Storage Capacity: BEFORE, storing gases like hydrogen and methane required heavy, high-pressure tanks with low density limits. NOW, tanks filled with MOFs can store vastly more gas at lower pressures because the molecules are adsorbed onto the immense internal surface area of the framework.
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Water Harvesting: BEFORE, extracting moisture from desert air required energy-intensive refrigeration or desiccant systems that only worked in high humidity. NOW, specialized MOFs developed by Yaghi's team can trap water molecules from air with less than 20 percent humidity and release it using natural sunlight.
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Material Design Approach: BEFORE, solid-state chemists often relied on trial and error to discover new porous materials like zeolites. NOW, the principles of 'reticular chemistry' allow scientists to predictably engineer custom MOFs by swapping out specific metal nodes or organic struts like structural building blocks.
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Carbon Capture Technology: BEFORE, capturing CO2 from industrial flues relied on corrosive liquid amine solutions that require massive energy to regenerate. NOW, solid-state MOFs offer a highly selective, energy-efficient alternative for trapping and releasing CO2 without generating liquid waste.
What Did NOT Change
Despite the revolutionary customizability of MOFs, traditional porous materials like naturally occurring zeolites and activated carbon have not been completely replaced in standard industrial filtration. Manufacturing complex, high-purity MOFs at massive commercial scales still remains more expensive than mining or producing these conventional, legacy adsorbents.
Prelims Angle
NCERT Connection
Common Misconceptions
✗ MOFs are naturally occurring minerals that are mined from the earth for industrial use.
✓ MOFs are entirely synthetic, engineered materials created in laboratories by chemically linking metal ions with organic molecules.
People frequently confuse them with zeolites, which are naturally occurring porous aluminosilicate minerals widely used for similar gas-trapping and water-filtration purposes.
✗ The 'organic' part of a Metal-Organic Framework refers to living or biological tissue.
✓ The term 'organic' in MOFs refers strictly to carbon-based chemical compounds acting as struts or linkers between the metal nodes, completely independent of biological matter.
In common parlance, the word 'organic' is heavily associated with agriculture, food production, or living organisms, masking its strict chemical definition regarding carbon-based molecules.
Practice Questions
Q1
How Many CorrectConsider the following statements regarding Metal-Organic Frameworks (MOFs), which were the subject of the 2025 Nobel Prize in Chemistry: 1. They are constructed using transition metal ions as cornerstones connected by inorganic linkers to form a porous lattice. 2. Their exceptionally high internal surface area enables the storage of hydrogen gas at lower pressures compared to empty tanks. 3. The concept of 'reticular chemistry' allows for the rational design of MOFs by varying the size and nature of their molecular building blocks. How many of the above statements are correct?
Q2
Match the FollowingMatch the 2025 Nobel Laureates in Chemistry (List I) with their specific pioneering contribution to the development of MOFs (List II): List I (Laureate) A. Richard Robson B. Susumu Kitagawa C. Omar M. Yaghi List II (Contribution) 1. Demonstrated that coordination networks had dynamic porosity and could reversibly capture gases. 2. Created highly robust structures like MOF-5 and established the principles of reticular chemistry. 3. Synthesized the first early models of coordination networks using copper ions in 1989. Select the correct code:
Q3
Assertion & ReasonAssertion (A): Metal-Organic Frameworks (MOFs) can successfully extract liquid water from desert air even when the relative humidity is extremely low (below 20 percent). Reason (R): The high density of purely metallic bonds within the MOF structure creates strong electrical currents that rapidly condense atmospheric moisture. Select the correct answer from the codes given below: