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Enhancement оf Photochromism in Poly(Vinyl Alcohol)– Phosphotungstic Acid Nanocomposites Using a Low Molecular Weight Alcohol Additive
Abstract
Poly(vinyl alcohol) (PVA)–phosphotungstic acid (PTA) nanocomposite films were produced from aqueous solutions with the addition of ethylene glycol (EG), which is a plasticizer for PVA and contains OH groups capable of being electron donors during the photoreduction of PTA. Spectroscopic studies have shown that the addition of EG significantly enhances the photochromic properties of nanocomposites caused by photoinduced electron transfer from the organic matrix of nanocomposite to PTA molecules.
Keywords
photochromic materials,
nanocomposites,
poly(vinyl alcohol),
phosphotungstic acid,
photoinduced reduction
Supporting agencies: The work was partially supported by the Belarusian Republican Foundation for Basic Research (grant no. F23ME-033)
About the Authors
A. A. Gorbachev
B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus
Belarus
Belarus
Minsk
O. N. Tretinnikov
B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus
Belarus
Belarus
Minsk
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Review
For citations:
Gorbachev A.A., Tretinnikov O.N. Enhancement оf Photochromism in Poly(Vinyl Alcohol)– Phosphotungstic Acid Nanocomposites Using a Low Molecular Weight Alcohol Additive. Zhurnal Prikladnoii Spektroskopii. 2024;91(5):709-713. (In Russ.)
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