We have used the "threading-followed-by-swelling" approach to fix a daisy chain structure in solution, leading to the isolation of a captured |c2|daisy chain in 77% yield. Interlocked molecules such as rotaxanes and catenanes have potential applicability as molecular actuators and switches within mesoscale molecular electronics devices.1 Interest in extending their degree of mechanical interlocking and function into macromolecules has led to the development of a range of polyrotaxanes and polycatenanes, either through the polymerization of interlocked monomers or the stoppering of poly-pseudorotaxane complexes.
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