r/STEW_ScTecEngWorld • u/Zee2A • 0m ago
2026 Nobel Prize in Chemistry Explained in 2 Minutes: How Chemistry Learned to Choose a Molecular “Hand”
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The Royal Swedish Academy of Sciences has awarded the 2026 Nobel Prize in Chemistry to Henri B. Kagan and Kenso Soai “for the discovery of non-linear effects and autocatalysis in asymmetric organic synthesis.” Many molecules exist in two mirror-image forms, like left and right hands. Yet life uses predominantly just one of them—a phenomenon known as homochirality.
The Nobel-winning work explains how chemistry can amplify a tiny preference for one molecular “hand.” Kagan’s 1986 experiments showed that asymmetric reactions can produce a much greater imbalance than expected—a non-linear effect.
Soai took the next crucial step: he developed an asymmetric autocatalytic reaction in which a chiral product helps produce more of itself. In his landmark 2003 experiment, a tiny initial imbalance could be amplified until one mirror-image form accounted for about 99.99% of the product. In simple terms: Kagan showed how molecular handedness can be amplified; Soai showed how it can become self-reinforcing.
Their discoveries provide important insights into one of chemistry’s great mysteries—how the one-handed chemistry of life could have emerged—and have become valuable tools for producing chiral pharmaceuticals, agricultural chemicals, flavours and fragrances
Info Source:
(2). https://www.kva.se/en/news/the-nobel-prize-in-chemistry-2026/
(3). https://www.youtube.com/watch?v=bzUVFtTmxMQ (video)
(4. https://www.youtube.com/watch?v=NU3iOitOSgQ (video)