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Vol. 79 (2011) No. 10 P 783-786




This study reports that polynuclear charge-transfer complexes consisting of Ce3+ and a Lindqvist-type polyoxometalate center, either W6O192− or Mo6O192−, function as an all-inorganic visible-light-absorbing chromophore. The polynuclear W6O19/Ce and Mo6O19/Ce complexes showed an intense absorption band from the UV region to 520 and 600 nm, respectively. The FTIR and Ce LIII-edge X-ray absorption measurements confirmed that the visible absorption is due to the oxo-bridged W6+/Ce3+ and Mo6+/Ce3+. As polyoxometalates have efficient redox and catalytic properties, their visible-light sensitization could provide a new building block for fabricating inorganic, molecular-based photosynthetic assemblies.

Copyright © 2011 The Electrochemical Society of Japan

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