A dual-response [2]rotaxane based on a 1,2,3-triazole ring as a novel recognition station.


Two novel multilevel switchable [2]rotaxanes containing an ammonium and a triazole station have been constructed by a Cu(I)-catalyzed azide-alkyne cycloaddition reaction. The macrocycle of [2]rotaxane containing a C6-chain bridge between the two hydrogen bonding stations exhibits high selectivity for the ammonium cation in the protonated form. Interestingly… (More)
DOI: 10.1002/chem.200901841


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