高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (10): 1979.

• 研究简报 • 上一篇    下一篇

钨硅酸/有机胺改性的二氧化硅纳米复合薄膜的制备和光致变色性质

张铁锐, 金明, 冯威, 卢然, 包春燕, 赵英英, 李铁津, 姚建年   

  1. 中国科学院化学研究所分子科学中心, 北京 100080
  • 收稿日期:2001-09-19 出版日期:2002-10-24 发布日期:2002-10-24
  • 通讯作者: 卢 然(1969年出生),女,博士,教授,从事有机纳米功能材料研究.E-mail:luran@mai.ljlu.edu.cn E-mail:luran@mai.ljlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:59932040)资助

Preparation and Photochromic Properties of Tungstosilicate Acid/Organoamino-modified Silica Nanocomposite Films

ZHANG Tie-Rui, JIN Ming, FENG Wei, LU Ran, BAO Chun-Yan, ZHAO Ying-Ying, LI Tie-Jin   

  1. College of Chemistry, Jilin University, ChangChun 130023, China
  • Received:2001-09-19 Online:2002-10-24 Published:2002-10-24

关键词: 钨硅酸, 溶胶-凝胶法, 光致变色, 电荷转移

Abstract: A novel inorganic-organic nanocomposite film was prepared and characterized by IR, UV-Vis, XRD and DTA-TG. IR and UV-Vis spectra show that the Keggin structure of SiW 12O404- polyanion is preserved in the composite film and there is an interaction between H4SiW12O40 and the organic substrate. The composite film showed a reversible photochromism. Under UV irradiation, the composite film turns blue and charge transfer occurs by oxidation of R-NH3+ and reduction of SiW 12O404-. When the irradiated samples are placed in air and sheltered from the light, they change back to their original color, and recover again when being exposed to UV light.

Key words: Tungstosilicate acid, Sol-gel technique, Photochromism, Charge-transfer

中图分类号: 

TrendMD: