负载缺位钨硅酸的有机无机复合光致变色薄膜
Novel Organic-inorganic Photochromic Film based on Mono-vacant Keggin-type Polyoxometalates
Received date: 2006-03-22
Revised date: 2006-08-07
Online published: 2007-03-20
董晓雯 , 潘庆谊 , 黄焱 , 黄家骏 , 王思远 . 负载缺位钨硅酸的有机无机复合光致变色薄膜[J]. 无机材料学报, 2007 , 22(2) : 369 -372 . DOI: 10.3724/SP.J.1077.2007.00369
A novel SiW11/SiO2/PVA hybrid film was fabricated by using a sol-gel method. Mono-vacant Keggin-type polyoxometalates [Xn+ W11O39] (12-n)- (SiW11) were introduced into SiO2 network. The IR spectrum indicates that the covalent bond of W--O--Si is formed between SiW11 and SiO2 network, and SiW11 anions still maintain Keggin structure basically in the hybrid film. However, the strong reaction between SiW11 and matrix brings big shape changes on SiW11 anions. The transparent film changes from colorless to dark blue under UV irradiation and shows a good photochromic havior.
Key words: organic-inorganic; hybrid; photochromic; polyoxometalates; sol-gel
/
〈 |
|
〉 |