| Summary: | 碩士 === 國防大學理工學院 === 應用化學碩士班 === 98 === In the present work, The fluorescent MgQ₂ complex, containing bis-(8-hydroxyquinoline) and magnesium(Ⅱ) was synthesized. The complexes were characterized by Fourier transform infrared Spectroscopy(FTIR), Mass Spectroscopy, Ultra-Violet Visible Spectroscopy(U.V) and Fluorescent Spectrum. In addition, the sol-gel method has been employed in the fabrication of composite sensing films consisting of bis-(8-hydroxyquinoline)magnesium, Znic oxide(ZnO) and polyvinyl -pyrrolidone(PVP). These films were examined for applications to detect explosives
compounds such as 2,4,6-trinitrotoluene(TNT), picric acid(PA), styphenic acid, 2,3-dinitrotoluene(2,3-DNT), 2,6-dinitrotoluene (2,6-DNT) and 3,4-dinitrotoluene
(3,4-DNT). The composite thin film showed high fluorescence quenching sensitivity towards DNT, TNT, PA and Styphnic Acid, indicating that composite sensing films consisting of emissive bis-(8-hydroxyquinoline)magnesium are potentially useful chemosensor for detecting explosives. The relative sensitivity of fluorescence quenching of emissive materials by the explosives has been rationalized in terms of the vapor pressure of the explosives, the interaction of the emissive compound and the analyles, and the relative energy levels of the emissive materials.
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