Preparation and photochromism of nanocomposite thin film based on polyoxometalate and polyethyleneglycol

被引：27
作者：
Chen, Jie [1 ]
Ai, Li Mei [1 ]
Feng, Wei [1 ]
Xiong, De Qi [1 ]
Liu, Yan [1 ]
Cai, Wei Min [1 ]
机构：
[1] Dalian Maritime Univ, Coll Environm Sci & Engn, Dalian 116026, Peoples R China
来源：
MATERIALS LETTERS | 2007年 / 61卷 / 30期
基金：
中国国家自然科学基金;
关键词：
polyoxometalates; polyethyleneglycol; nanocomposite thin film; photochromism;
D O I：
10.1016/j.matlet.2007.04.040
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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. (c) 2007 Elsevier B.V. All rights reserved.
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收藏
页码：5247 / 5249
页数：3
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