Journal
ENERGY AND ENVIRONMENT MATERIALS
Volume 743-744, Issue -, Pages 397-+Publisher
TRANS TECH PUBLICATIONS LTD
DOI: 10.4028/www.scientific.net/MSF.743-744.397
Keywords
Trace explosive detection; Mesoporous silica film; Porosity; Fluorescent spectra
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Thus, here, by using the sol-gel technique and spin coating technology, a series of mesoporous silica thin films doped by silylated naphthol fluorescence dye were successfully fabricated. By selecting the same surfactant triblock copolymer Pluronic F127 (EO106-PO70-EO106) as structure-directing agent, films with different pore structure and similar aperture size were synthesized under different conditions. The films doping fluorescence dye toward nitro explosive 2, 4, 6-trinitrotoluene (TNT) vapor exhibited rapid response rate and extremely high fluorescent quenching efficiency, close to 96.4 % after 1200 s response. The results clearly showed that pore structure control of mesoporous film was an effective way to improve sensor performance. Mesoporous thin films, with different pore structure, easily to be prepared and owning high sensitivity, could be used as a new alternative of trace explosive detecting material.
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