A light-responsive self-complementary crown ether/ammonium conjugate bearing an arylazopyrazole photoswitch as a spacer can be switched between a [c2]daisy chain (E-isomer) and a lasso-type pseudo[1]rotaxane (Z-isomer) by light. Click to show full abstract
A light-responsive self-complementary crown ether/ammonium conjugate bearing an arylazopyrazole photoswitch as a spacer can be switched between a [c2]daisy chain (E-isomer) and a lasso-type pseudo[1]rotaxane (Z-isomer) by light.
               
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