Preparation and photochromism of nanocomposite thin film based on polyoxometalate and polyethyleneglycol |
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Authors: | Jie Chen De Qi Xiong Yan Liu Wei Min Cai |
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Affiliation: | College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, People's Republic of China |
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Abstract: | A photochromic nanocomposite based on Keggin structure phosphomolybdic acid (PMoA) well dispersed in polyethyleneglycol (PEG) was fabricated. TEM image showed that PMoA nanoparticles with narrow size distribution were finely dispersed in polymer matrix. FT-IR results showed that the Keggin geometry of polyoxometalates was still preserved inside the composites and strong coulombic interaction was built between PMoA and polymer matrix. Under UV irradiation, the film was reduced photochemically to yield a blue species, which was in accordance with a charge-transfer mechanism. |
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Keywords: | Polyoxometalates Polyethyleneglycol Nanocomposite thin film Photochromism |
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