Preparation and Optical Properties of Flourescein Doped Sol-gel SiO2/MSO Coating

doi:10.7517/j.issn.1674-0475.2007.05.374

Abstract

Abstract: The dye fluorescein doped silica/methyl silicon oil (MOS) coating was prepared by the sol-gel method. The fluorescein doped SiO₂/MSO coating was investigated with SPM, UV-Vis and fluorescence analysis for its optical properties. The results showed that the fluorescein doped SiO₂ coating which was excitated by 350～450 nm wavelength give an emission spectrum with maximum wavelength at 520 nm. The fluorescence intensity of SiO₂/MSO coating was 50% stronger than the common SiO₂ coating. Accelerated aging test at the temperature of 70℃ showed that fluorescence quenching taking place considerably beyond 20 days, a reduction of more than 70% was observed for the fluorescence intensity of SiO₂ coating, on the other hand, the reduction of fluorescence intensity of SiO₂/MSO coating was only 15% after 20 days.

Key words: fluorescein, methyl silicon oil, silica coating, sol-gel

CLC Number:

O613
TB321

ZHAO Xin, JIANG Xiao-dong, ZENG Jue-fa, ZHOU Zai-de, JIANG BO. Preparation and Optical Properties of Flourescein Doped Sol-gel SiO₂/MSO Coating[J]. Imaging Science and Photochemistry, 2007, 25(5): 374-379.

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Preparation and Optical Properties of Flourescein Doped Sol-gel SiO₂/MSO Coating

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