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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →A 2013 study explored whether a rigid, three-dimensional metal–organic framework could deliver high energetic performance while remaining relatively insensitive to impact, friction and electrostatic discharge. The result was a specific family of energetic materials—not evidence that ordinary MOFs are explosive or that the reported compounds are safe to handle.
What does “MOF” mean in this report?
MOF stands for metal–organic framework: a material built from metal atoms or clusters connected by organic molecules. The 2013 report concerned a particular energetic MOF design, not the broad class of porous materials as a whole. Its structures used the nitrogen-rich ligand 4,4′-azo-1,2,4-triazole and nitrate anions coordinated by copper or silver atoms.
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The Chemistry World account describes the work as an effort to make high-energy materials while addressing the tension between energetic performance and sensitivity. Siping Pang, a member of the research team, put the challenge this way: “In existing explosives the requirements of insensitivity and high energy are quite often contradictory to each other.”
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Why build a rigid three-dimensional framework?
The researchers’ design rationale centered on structure. They contrasted rigid 3D frameworks with less rigid linear metal-containing polymers and two-dimensional frameworks, arguing that the 3D architecture could accommodate energetic components and contribute structural rigidity. This was a proposed strategy for the compounds studied, not a universal rule that 3D materials are always less sensitive or more powerful.
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Pang attributed the materials’ potential energy to their nitrogen-rich heterocyclic ligand, energetic anions and strained 3D framework, saying those features could release additional energy upon detonation. That explanation describes the researchers’ rationale; it should not be read as a general property of MOFs.
What did the study report?
Beijing Institute of Technology’s 25 December 2013 account reported a calculated heat of detonation of 3.6 kcal g−1 for one of the 3D MOFs. The university described that calculated value as the highest then reported for a metal-based energetic compound. It is a historical, calculated figure—not a measured result or a current record.
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The research accounts also characterized the compounds as having good thermal stability and low impact, friction and electrostatic-discharge sensitivity. Those are relative findings in the context of the reported research. They do not establish that the substances are harmless, suitable for casual handling or safe outside controlled research conditions.
What the result does—and does not—establish
- It establishes: researchers reported a particular copper- or silver-based family of nitrogen-rich, three-dimensional energetic MOFs and described their performance and sensitivity characteristics.
- It does not establish: that MOFs generally are explosive, that these materials are consumer products, or that they are currently commercialized or available.
- It does not establish: a present-day performance ranking. The 3.6 kcal g−1 figure and “highest then reported” description belong to the university’s 2013 account.
The distinction matters because “MOF” names a wide materials category. The “bang” in the headline refers to this specialized energetic-materials research, not to ordinary MOFs as a class.
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Publication details
The work was reported in S. Li and colleagues’ paper, “3D Energetic Metal–Organic Frameworks: Synthesis and Properties of High Energy Materials,” published in Angewandte Chemie International Edition in 2013, volume 52, pages 14031–14035. Chemistry World’s contemporary report included a cautionary perspective from Northwestern University expert Fraser Stoddart: “Although the more sinister part of our world needs another high explosive like a sore head, there are fields of human endeavour where there is room for their improved performance.”
Sources: Chemistry World, 14 November 2013; Beijing Institute of Technology, 25 December 2013.
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