研究论文

负载缺位钨硅酸的有机无机复合光致变色薄膜

  • 董晓雯 ,
  • 潘庆谊 ,
  • 黄焱 ,
  • 黄家骏 ,
  • 王思远
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  • 上海大学理学院化学系, 上海 200436

收稿日期: 2006-03-22

  修回日期: 2006-08-07

  网络出版日期: 2007-03-20

Novel Organic-inorganic Photochromic Film based on Mono-vacant Keggin-type Polyoxometalates

  • DONG Xiao-Wen ,
  • PAN Qing-Yi ,
  • HUANG Yan ,
  • HUANG Jia-Jun ,
  • WANG Si-Yuan
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  • College of Science, Shanghai University, Shanghai 200436, China

Received date: 2006-03-22

  Revised date: 2006-08-07

  Online published: 2007-03-20

摘要

采用sol-gel技术, 利用缺位杂多酸中氧原子不饱和性, 将Keggin结构缺位杂多酸盐SiW11以共 价键结合到SiO2 网络上, 制备了SiW11/SiO2/PVA复合薄膜. IR光谱表明, SiW11在基体中基本保持Keggin结构, 与SiO2网络上形成了W--O--Si 共价键. 由于W--O--Si键的生成, 造成Keggin结构SiW11产生一定的形变. 此薄膜在紫外光照射下变蓝, 具有较好的光致变色性质.

本文引用格式

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

Abstract

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.

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