Advances in 2D coordination networks for single-crystal-to-single-crystal applications beyond confined pores

摘要

Research issue on 2D coordination networks is moving toward practical applications. Recent developments in such 2D networks include exciting advances in efficient single-crystal-to-single-crystal (SCSC) functionality. This account highlights advances in various 2D coordination networks as SCSC porous platforms for dye inclusion as an energy transfer system, template for x-ray crystal structure determination of various liquids, polymorphism materials, efficient heterogeneous catalysts, separation of o-, m-, and m-xylene, sensing via interlayer-tuning, recognition and reservoir of unstable diiodomethane, chiral recognition in SCSC mode. The key point of their utility is not only the construction of recyclable tolerant 2D networks but also channel-tuning for inclusion of targeting guest molecules. The targeting guest molecules, which are appropriate with the polarity, shape, and size of 2D pores, can, instead of simple organic solvates, be incorporated into the porous crystals in SCSC mode, thus giving rise to recyclable tolerant host-guest systems in the crystalline state.