Polyoxometalates photochromism

Photochromic dyes, 20 516 Photochromic glass silver in, 22 658, 686 as a solar energy material, 23 5 Photochromic lenses, 6 588, 601-602 Photochromic materials, 6 587-606 inorganic, 6 589-592 organic, 6 592-601 polyoxometalates, 6 591-592 silver halide-containing glasses, 6 589-590... 

I2W. Feng, Y. Ding, Y. Liu, and R. Lu, The Photochromic Process of Polyoxometalate-based Nanocomposite Thin Film by in situ ATM and Spectroscopy, Materials Chem. and Phys., 98, 347-52 (2006). 

Polyoxometalates are important catalysts but they are also finding application in optical, electrical, and magnetic devices. Mixed-metal polyoxometalates with vanadium(V) in the polyoxoanion core confers enhanced properties to such structures, principally in their ability to form essentially infinite networks that can be utilized as coatings or as other thin film materials. Additionally, these materials have tunable electromagnetic and photochromic properties. In combination with organic polymers, so-called hybrid polymers, special electrochemical properties are conferred, making possible such electrical storage devices such as capacitors and batteries that utilize the redox properties of the polyoxometalate [7],... 

He, T., Yao, J. (2006). Photochromism in composite and hybrid materials based on transition-metal oxides and polyoxometalates. Progress in Materials Science, 51, 810-879. http //dx.doi.Org/10.1016/j.pmatsci.2005.12.001. 

Qi, W., Li, H. and Wu, L. (2008). Stable Photochromism and ControUable Reduction Properties of Surfactant-Encapsulated Polyoxometalate/Silica Hybrid Films, J. Phys. Chem. B, 112, pp. 8257-8263. 

Reports of the photosensitivity of polyoxometalates date to at least 1916 [24]. Early work on the photochromism and photochemistry of alkylammonium polymolybdates by Yamase and co-workers [25-30] and the photooxidation of alcohols by heteropoly acids by Papaconstantinou and coworkers [31] gave some indication of the potential of such chemistry. Papaconstantinou reported that alcohols and carboxylic acids are photooxidized under aerobic conditions by heteropoly acids in water with clean transformation of the primary and secondary alcohols to the corresponding carbonyl compounds, equation (1) [32]. The products were not identified for the other substrates. The rate law was reported for a couple... 

Huang, Y., Pan, Q.Y., Dong, X.W., and Cheng, Z.X. (2006) Synthesis and photochromism of a novel organic-inorganic hybrid film embedded with polyoxometalates. Mater. Chem. Phys.,... 

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