Cation-exchange process in an anionic metal–organic framework: New precursors for facile fabrication of ZnO nanostructures

Abstract

The post-synthetic cation exchange process of an anionic metal–organic framework [HDMA]2[Zn2(BDC)3(DMA)2]6DMF (HDMA+: dimethylamonnium, BDC2−: 1,4-benzenedicarboxilate, DMA: dimethylamine, DMF: N,N′-dimethylformamide) has been discussed. The [NH2Me2]+ (dimethylammonium) which exist in pores was exchanged with series of organic cations such as TMA+ (tetramethylammonium), TEA+ (tetraethylammonium), TPA+ (tetrapropylammonium) and TBA+ (tetra-n-butylammonium). Powder X-ray diffraction (PXRD), infrared spectroscopy (IR) and hydrogen nuclear magnetic resonance (1H NMR) of the samples were reported. The ZnO nanostructures were obtained by direct calcination of the cation exchanged MOFs and determined by scanning electronic microscope (SEM).