Journal
INORGANIC CHEMISTRY
Volume 52, Issue 2, Pages 555-557Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic302477p
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Funding
- CNRS
- Ministere de l'Enseignement Superieur et de la Recherche
- TGE Reseau National de RPE Interdisciplinaire
- [FR-CNRS 3443]
- [ANR-11-BS07-011-01 BIOOPOM]
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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.
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