Study of Pore Property of Mesoporous Films Materials for Trace Explosive Detection
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.
Trace explosive detection Mesoporous silica film Porosity Fluorescent spectra
Li Ma Yuquan Wen Nan Yan Guangtao Li
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing,1 Department of Chemistry, Tsinghua University, Beijing, 100084, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
397-401
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）