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Hakouk, K., Oms, O., Dolbecq, A., El Moll, H., Marrot, J., Evain, M., Molton, F., Duboc, C., Deniard, P., Jobic, S., Mialane, P. & Dessapt, R. (2013) Sulfonium Polyoxometalates: A New Class of Solid-State Photochromic Hybrid Organic-Inorganic Materials. Inorg. Chem. 52 555–557.
Added by: Laurent Cournède (2016-03-10 21:23:31) |
| Type de référence: Article DOI: 10.1021/ic302477p Numéro d'identification (ISBN etc.): 0020-1669 Clé BibTeX: Hakouk2013a Voir tous les détails bibliographiques  |
Catégories: MIOPS Mots-clés: molybdates, transition Créateurs: Deniard, Dessapt, Dolbecq, Duboc, El Moll, Evain, Hakouk, Jobic, Marrot, Mialane, Molton, Oms Collection: Inorg. Chem. |
Consultations : 1/515
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| Résumé |
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For the very first time, sulfonium polyoxometalate (POM) assemblies are shown to develop efficient solid-state photochromism in ambient conditions. The optical properties of the already known Rb-0.75(NH4)(5.25)[(Mo3O8)(2)O(O3PC(CH2S(CH3)(2))OPO3)(2)]center dot 8H(2)O (1) and a new material (Me3S)(4)[Mo8O26] (2) under UV excitation are investigated by diffuse reflectance spectroscopy, revealing that the color change effect is highly tunable playing with the nature of the POM. A mechanism involving the photoreduction of Mo6+ cations associated with electron transfers from the sulfonium cations toward the POMs is proposed.
Added by: Laurent Cournède |