Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 23, Issue 1, Pages 47-50Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201605021
Keywords
catalysis; electrochemistry; photochemistry; polyoxometalates; visible light
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Funding
- Japan Society for the Promotion of Science
- Ministry of Education, Culture, Sports, Science and Technology, Japan
- University of Nottingham
- University of Nottingham Advanced Molecular Materials Research Group
- Grants-in-Aid for Scientific Research [16H06523, 25248014, 15F15034, 14F04337] Funding Source: KAKEN
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Tungsten-based polyoxometalates (POMs) have been employed as UV-driven photo-catalysts for a range of organic transformations. Their photoactivity is dependent on electronic transitions between frontier orbitals and thus manipulation of orbital energy levels provides a promising means of extending their utility into the visible regime. Herein, an organic-inorganic hybrid polyoxometalate, K-6[P2W17O57(PO5H5C7)(2)]center dot 6C(4)H(9)NO, was found to exhibit enhanced redox behaviour and photochemistry compared to its purely inorganic counterparts. Hybridization with electron-withdrawing moieties was shown to tune the frontier orbital energy levels and reduce the HOMO-LUMO gap, leading to direct visible-light photoactivation of the hybrid and establishing a simple, cheap and effective approach to the generation of visible-light-activated hybrid nanomaterials.
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