Enhancement of Photochromism in Poly(Vinyl Alcohol)-Phosphotungstic Acid Nanocomposites Using a Low-Molecular-Weight Alcohol Additive

被引：0
作者：
Gorbachev, A. A. [1 ]
Tretinnikov, O. N. [1 ]
机构：
[1] Natl Acad Sci Belarus, B I Stepanov Inst Phys, Minsk, BELARUS
来源：
JOURNAL OF APPLIED SPECTROSCOPY | 2024年 / 91卷 / 05期
关键词：
photochromic materials; nanocomposites; poly(vinyl alcohol); phosphotungstic acid; photoinduced reduction; FILMS;
D O I：
10.1007/s10812-024-01818-5
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Poly(vinyl alcohol) (PVA)-phosphotungstic acid (PTA) nanocomposite films were prepared from aqueous solutions with added ethylene glycol (EG), which is a plasticizer for PVA and contains OH groups, capable of being electron donors in the photoreduction of PTA. Spectroscopic studies have shown that the addition of EG significantly enhances the photochromic properties of the resultant nanocomposites due to photoinduced electron transfer from the organic matrix of the nanocomposite to PTA molecules.
引用
收藏
页码：1042 / 1046
页数：5
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