Reversible Photoswitchable Fluorescence in Thin Films of Inorganic Nanoparticle and Polyoxometalate Assemblies

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• 作者：Bing Qin ; Hongyue Chen ; Hui Liang ; Lei Fu ; Xinfeng Liu ; Xiaohui Qiu ; Shaoqin Liu ; Rui Song ; Zhiyong Tang
• 刊名：Journal of the American Chemical Society
• 出版年：2010
• 出版时间：March 10, 2010
• 年：2010
• 卷：132
• 期：9
• 页码：2886-2888
• 全文大小：193K
• 年卷期：v.132,no.9(March 10, 2010)
• ISSN：1520-5126

文摘

A novel type of inorganic hybridized ultrathin film consisting of Preyssler-type polyoxometalates K₁₄[Na(H₂O)P₅W₃₀O₁₁₀] (Na-POMs) and CdSe@CdS nanoparticles (NPs) was prepared on the solid substrates by a layer-by-layer assembly technique. The film exhibits reversible fluorescence switching behavior under control of irradiation with either UV light or visible light, which is ascribed to the selective occurrence of fluorescence resonance energy transfer between luminescent NPs and different states of photochromic Na-POMs.