“…40 Considering the merits of ZL crystals and encouraged by the promising results from Ln 3+ species in other zeolites, we have developed a series of host-guest materials based on ZL crystals and Ln 3+ species. 11,23,26,44 The advantages of ZL instead of other zeolites and silica are as follows: 1) the size of the ZL crystal can be synthetically tuned from 30 nm to 20 μm with different morphologies, ranging from discs to elongated cylinders, for use in different experiments, 2) the hexagonal structure of ZL crystals has strictly parallel one-dimensional channels, and 3) the facile functionalization of the surface of ZL with targeting groups.…”