Tailor-made pyrazolide-based metal–organic frameworks for selective catalysis

N Huang, K Wang, H Drake, P Cai, J Pang… - Journal of the …, 2018 - ACS Publications
Journal of the American Chemical Society, 2018ACS Publications
The predesignable porous structures in metal–organic frameworks (MOFs) render them
quite attractive as a host–guest platform to address a variety of important issues at the
frontiers of science. In this work, a perfluorophenylene functionalized metalloporphyrinic
MOF, namely, PCN-624, has been rationally designed, synthesized, and structurally
characterized. PCN-624 is constructed by 12-connected [Ni8 (OH) 4 (H2O) 2Pz12](Pz=
pyrazolide) nodes and fluorinated 5, 10, 15, 20-tetrakis (2, 3, 5, 6-tetrafluoro-4-(1 H-pyrazol …
The predesignable porous structures in metal–organic frameworks (MOFs) render them quite attractive as a host–guest platform to address a variety of important issues at the frontiers of science. In this work, a perfluorophenylene functionalized metalloporphyrinic MOF, namely, PCN-624, has been rationally designed, synthesized, and structurally characterized. PCN-624 is constructed by 12-connected [Ni8(OH)4(H2O)2Pz12] (Pz = pyrazolide) nodes and fluorinated 5,10,15,20-tetrakis(2,3,5,6-tetrafluoro-4-(1H-pyrazol-4-yl)phenyl)-porphyrin (TTFPPP) linker with an ftw-a topological net. Notably, PCN-624 exhibits extinguished robustness under different conditions, including organic solvents, strong acid, and base aqueous solutions. The pore surface of PCN-624 is decorated with pendant perfluorophenylene groups. These moieties fabricate densely fluorinated nanocages resulting in the selective guest capture of the material. More importantly, PCN-624 can be employed as an efficient heterogeneous catalyst for the selective synthesis of fullerene–anthracene bisadduct. Owing to the high chemical robustness of PCN-624, it can be recycled over five times without significant loss of its catalytic activity. All of these results demonstrate that MOFs can serve as a powerful platform with great flexibility for functional design to solve various synthetic problems.
ACS Publications
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