“…Molecular cages, as one of the supramolecular architectures, provide a synthetic three-dimensional cavity for binding guests, and offer a window for mimicking biological processes in nature [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. Since the first synthesis of cryptands and cavitands in 1969by Jean-Marie Lehn and co-workers [ 9 ], various synthetic molecular cages have been reported and have found a variety of potential applications in gas separation [ 10 , 11 , 12 , 13 , 14 ], catalysis [ 15 , 16 , 17 , 18 , 19 ], molecular sensing, and other fields [ 20 , 21 , 22 , 23 , 24 , 25 ]. Among them, the synthesis of molecular cages by the self-assembly method has attracted extensive attention in recent years due to its simple synthesis and high yield.…”