Ruthenium(II) Tris(2,2′-bipyridyl) Complex Incorporated in UiO-67 as Photoredox Catalyst

Andrea Santiago-Portillo, Herme G. Baldoví, Esther Carbonell, Sergio Navalón, Mercedes Álvaro, Hermenegildo García, Belén Ferrer

Research output: Contribution to journalArticlepeer-review

Abstract

Ruthenium(II) bis(2,2′-bipyridine) (2,2′-bipyridyl-5,5′-dicarboxylic acid), Rudcbpy, attached to the UiO-67(Zr) metal organic framework (MOF), generates upon visible light excitation the localized triplet excited state of the ruthenium(II) bipyridyl complex that decays partly to a very long-lived (millisecond time scale) photoinduced charge-separated state following a similar behavior as that of analogous ruthenium(II) tris(bipyridyl) complex dissolved in water, except that the lifetime of the soluble complex excited state is orders of magnitude shorter. The occurrence of photoinduced charge separation on the Rudcbpy-UiO-67(Zr) MOF has been proven visually by using methyl viologen as electron acceptor. Rudcbpy-UiO-67(Zr) behaves as a heterogeneous, reusable, photoredox catalyst promoting debromination of α-bromoketones with excellent selectivity at high conversions. Characterization data show that Rudcbpy-UiO-67(Zr) is stable under the photocatalytic reaction conditions.

Original languageEnglish
Pages (from-to)29190-29199
Number of pages10
JournalJournal of Physical Chemistry C
Volume122
Issue number51
DOIs
Publication statusPublished - 27 Dec 2018
Externally publishedYes

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