Formation mechanism of rod-like ZIF-L and fast phase transformation from ZIF-L to ZIF-8 with morphology changes controlled by polyvinylpyrrolidone and ethanol

摘要

Rod-like ZIF-L was formed with the aid of PVP through a self-assembly mechanism. A fast phase transformation from irregular ZIF-L to rhombic dodecahedral ZIF-8 occurred once ethanol was used as the washing solvent due to its weak crystallinity and small size. ZIFs with different coordination modes, morphologies and sizes were obtained via this facile method.