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Nature 427, 597 (12 February 2004) | doi:10.1038/427597a
Supramolecular chemistry: Molecular merry-go-round
Magdalena Helmer
The ingenuity of chemists has produced molecules that mimic a range of mechanical devices, from rotors and shuttles to switches, turnstiles and ratchets. Hiraoka, Shiro and Shionoya have now created a molecular ball-bearing, an assemblage of two disc-shaped molecules that rotate relative to each other on silver ions (Ag+) sandwiched between them (J. Am. Chem. Soc.
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