Active-Site-Accessible, Porphyrinic Metal-Organic Framework Materials

作者：Farha Omar K^*; Shultz Abraham M; Sarjeant Amy A; Nguyen SonBinh T; Hupp Joseph T

来源：Journal of the American Chemical Society, 2011, 133(15): 5652-5655.

DOI：10.1021/ja111042f

On account of their structural similarity to cofactors found in many metallo-enzymes, metalloporphyrins are obvious potential building blocks for catalytically active, metal-organic framework (MOF) materials. While numerous porphyrin-based MOFs have already been described, versions featuring highly accessible active sites and permanent micro-porosity are remarkably scarce. Indeed, of the more than 70 previously reported porphyrinic MOFs, only one has been shown to be both permanently microporous and contain internally accessible active sites for chemical catalysis. Attempts to generalize the design approach used in this single successful case have failed. Reported here, however, is the synthesis of an extended family of MOFs that directly incorporate a variety of metalloporphyrins (specifically Al(3+), Zn(2+), Pd(2+), Mn(3+), and Fe(3+) complexes). These robust porphyrinic materials (RPMs) feature large channels and readily accessible active sites. As an illustrative example, one of the manganese-containing RPMs is shown to be catalytically competent for the oxidation of alkenes and alkanes.

• 出版日期2011-4-20
• 单位西北大学