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Preparation of Photochromic Coating Films Containing Spiropyran by Sol-Gel Method  

Jeong, Sang Hyeok (Department of Chemical and Biochemical Engineering, Konyang University)
Cho, Kyung In (Department of Chemical and Biochemical Engineering, Konyang University)
Song, Ki Chang (Department of Chemical and Biochemical Engineering, Konyang University)
Publication Information
Korean Chemical Engineering Research / v.46, no.1, 2008 , pp. 112-117 More about this Journal
Abstract
Organic-inorganic hybrid solutions were prepared via sol-gel method using glycidoxypropyl trimethoxysilane (GPTMS) and methyl triethoxysilane (MTES) as starting precursors at a molar ratio of 1:1. The photochromic coating solutions were prepared by mixing the solutions of photochromic dye (spiropyran) dissolved in ethylacetate (EA) with the organic-inorganic hybrid solutions. Photochromic films were prepared on polycarbonate substrate by spin coating and cured for 2 h at $100^{\circ}C$. The resulting films exhibited a reversible color change upon irradiation with UV light. The photochromic properties of the films showed that the color-fading speed increases with increasing the EA content in the coating solutions.
Keywords
Photochromic; Sol-Gel; Spiropyran; Glycidoxypropyl Trimethoxysilane; Methyl Triethoxysilane; Organic-Inorganic Hybrid;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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