Fabrication of Photochromic Tungsten Oxide Based Composite Film Using Peroxoisopolytungstic Acid

Abstract

Tungsten-based photochromic composite films were fabricated using peroxoisopolytungstic acid aqueous solution and transparent urethane resin. UV–visible irradiation of the resulting composite films showed photochromic properties, indicating broad absorption with peaks at 650 and 900 nm. The coloring time was about 40 min. The colored composite films were transformed to clear film in a dark room in 90 h.

Vanadium oxide-based photochromic composite film

“…In addition, when the particle size in WO 3 and MoO 3 -based composite lm was in the order of sub nanometers, reversible photochromic properties were observed at room temperature. [10][11][12] Similarly, the presence of these nanometer size V 2 O 5 is considered to be responsible for the photochromic property of the composite lm, in the present study. Furthermore, other nano-composite lm fabrication methods have Fig.…”

Effects of Excess Cu Addition on Photochromic Properties of AgCl-Urethane Resin Composite Films

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Laser-induced, in situ, nanoparticle shell synthesis in polymer matrix nanocomposites

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