无机化学学报

一种新的光致变色膜：Na₂WO₄-PAA-Glycerol体系研究

A New Photochromic Film: Na₂WO₄-PAA-Glycerol System

作者	单位
尚通明	南京大学配位化学国家重点实验室，南京 210093 江苏技术师范学院贵金属深加工及应用江苏省重点建设实验室，常州 213001
贺竞辉	南京大学配位化学国家重点实验室，南京 210093
韩敏	南京大学配位化学国家重点实验室，南京 210093
石乃恩	南京大学配位化学国家重点实验室，南京 210093
徐正	南京大学配位化学国家重点实验室，南京 210093

摘要:

关键词: WO₃ 多钨酸盐光致变色 PAA 智能窗

基金项目:

Abstract: A method for preparing Na₂WO₄-PAA-Glycerol photochromic films was reported. The film was composed of Na₂WO₄, PAA and Glycerol, which were coated on a glass substrate. The film turned blue in the sun, and bleached to transparent in the darkness. The UV-Visible spectra showed strong absorbance at 300～500 nm, and the ABS changed signifanctly at 500～800 nm. The film showed the best photochromic behavior when n_Na₂WO₄∶n_PAA is 4%～5%. The mechanism was suggested that after irradiation, poly tunstate produced by Na₂WO₄ and PAA formed the tungsten blues. The tungsten blues were bleached due to oxidation back to poly tunstate by oxygen. The film showed not only an excellent photochromism property with rapid response and good reversibility, but also the simple techniques and good stability.

Keywords: tungsten oxide poly tunstate photochromism PAA smart window

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尚通明,贺竞辉,韩敏,石乃恩,徐正.一种新的光致变色膜：Na₂WO₄-PAA-Glycerol体系研究[J].无机化学学报,2007,23(1):124-127.

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