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Enhancement of Solar Fuel Production Schemes by Using a Ru,Rh,Ru Supramolecular Photocatalyst Containing Hydroxide Labile Ligands
Author(s) -
Rogers Hannah Mallalieu,
Arachchige Shamindri M.,
Brewer Karen J.
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201502863
Subject(s) - photocatalysis , halide , chemistry , catalysis , reactivity (psychology) , rhodium , hydroxide , supramolecular chemistry , photochemistry , medicinal chemistry , inorganic chemistry , organic chemistry , molecule , medicine , alternative medicine , pathology
Polyazine‐bridged Ru II Rh III Ru II complexes with two halide ligands, Cl − or Br − , bound to the catalytically active Rh center are efficient single‐component photocatalysts for H 2 O reduction to H 2 fuel, with the coordination environment on Rh impacting photocatalysis. Herein reported is a new, halide‐free Ru II Rh III Ru II photocatalyst with OH − ligands bound to Rh, further enhancing the photocatalytic reactivity of the structural motif. H 2 production experiments using the photocatalyst bearing OH − ligands at Rh relative to the analogues bearing halides at Rh in solvents of varying polarity (DMF, CH 3 CN, and H 2 O) suggest that ion pairing with halides deactivates photocatalyst function, representing an exciting phenomenon to exploit in the development of catalysts for solar H 2 production schemes.