Zeolite-like metal-organic frameworks as platforms for applications: On metalloporphyrin-based catalysts

Mohamed H. Alkordi, Yunling Liu, Randy W. Larsen, Jarrod F. Eubank, Mohamed Eddaoudi*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

533 Scopus citations

Abstract

The extra-large cavities of zeolite-like metal-organic frameworks (ZMOFs) offer great potential for their exploration in applications pertinent to larger molecules, like porphyrins. The anionic nature of the framework allowed for facile in situ encapsulation of a cationic free-base porphyrin, and the α-cage of our (In-imidazoledicarboxylate)-based rho-ZMOF is ideally suited to the isolation of one porphyrin molecule per cage, which prevents the oxidative self-degradation associated with self-dimerization common in homogeneous catalysis and upon aggregation in solid supports like mesoporous silicates or polymers. The encapsulation of a free-base porphyrin [5,10,15,20-tetrakis(1-methyl-4- pyridinio)porphyrin] and the stability of the rho-ZMOF to metalation conditions, allows for the preparation of a variety of metalloporphyrins (i.e., Mn, Cu, Co, Zn ions) with the ZMOF serving as a platform. The Mn-metallated porphyrin encapsulated in rho-ZMOF shows catalytic activity toward the oxidation of cyclohexane, with turn-over numbers, to the best of our knowledge, higher than reported for similar heterogeneous systems, and our system can be recycled up to 11 cycles, which represents a longer lifetime than reported for any other system.

Original languageEnglish (US)
Pages (from-to)12639-12641
Number of pages3
JournalJournal of the American Chemical Society
Volume130
Issue number38
DOIs
StatePublished - Sep 24 2008

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

Fingerprint

Dive into the research topics of 'Zeolite-like metal-organic frameworks as platforms for applications: On metalloporphyrin-based catalysts'. Together they form a unique fingerprint.

Cite this