The Synthesis and Applications of Cr-Doped GLYMO and GLYMO/DAMO Surface Coating Systems for Absorbing UV-light by Sol-Gel Process

Authors: MELTEM ASİLTÜRK, FUNDA SAYILKAN, GALİP İÇDUYGU, HİKMET SAYILKAN

Abstract: A new glass coating system, containing \gamma- glycidoxypropyltrimethoxysilane/Cr^{3+} (system I:GLYMO/ Cr^{3+}) and \gamma-glycidoxypropyltrimethoxysilane/N-aminoethyl-3- aminopropyltrimethoxysilane/Cr^{3+} (system II:GLYMO/DAMO/Cr^{3+}), was synthesized by the sol-gel technique for UV light absorption applications. UV-visible spectroscopy (UV-VIS) was utilized to investigate the optical properties of coating materials. Especially system II showed very low transmission in the UV wavelength regions (300--400 nm) after thermal treatment of the coated surface. The UV transmission property of surfaces did not change at 80, 100, 450 or 500 °C, but a T value as low as 0.07% was obtained between 150 and 450 °C.

Keywords: Sol-gel technique, coating, optical properties, GLYMO

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