Design and synthesis of responsive, elastic, porous single crystalline materials using mechanically interlocked molecules

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A general route for the synthesis of asymmetric catenanes with multiple, different functional groups was established. There were many synthetic challenges involved in the synthesis. For example, the solubility of the key intermediates needed to be finely tuned, and the compatibility of various protecting groups required careful consideration. Now a variety of catenanes with asymmetric rings can be readily synthesized.As for the formation of MOF, it was found that the functional groups in catenane ligand affect the formation of the crystal, as well as the morphology of the crystal. However, crystals which are good enough for further characterization have not been successfully obtained.