Photoreactivity examined through incorporation in metal-organic frameworks

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119 Citations (Scopus)


Metal−organic frameworks, typically built by bridging metal centres with organic linkers, have recently shown great promise for a wide variety of applications, including gas separation and drug delivery. Here, we have used them as a scaffold to probe the photophysical and photochemical properties of metal−diimine complexes. We have immobilized a M(diimine)(CO)3X moiety (where M is Re or Mn, and X can be Cl or Br) by using it as the linker of a metal−organic framework, with Mn(II) cations acting as nodes. Time-resolved infrared measurements showed that the initial excited state formed on ultraviolet irradiation of the rhenium-based metal−organic framework was characteristic of an intra-ligand state, rather than the metal−ligand charge transfer state typically observed in solution, and revealed that the metal−diimine complexes rearranged from the fac- to mer-isomer in the crystalline solid state. This approach also enabled characterization of the photoactivity of Mn(diimine)(CO)3Br by single-crystal X-ray diffraction.
Original languageEnglish
Pages (from-to)688-694
JournalNature Chemistry
Publication statusPublished - 30 May 2010


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