摘要
采用溶胶-凝胶(sol-gel)法,以正硅酸乙酯TEOS/甲基三乙氧基硅烷(MTES)为先驱物,浓盐酸为催化剂,制备了掺杂不同三氯化钛(TiCl3)浓度的SiO2/MTES复合薄膜。采用荧光分光光度计、扫描探针显微镜、红外光谱仪、X光衍射仪等仪器对膜层性质进行了分析。结果表明,掺杂4%、3%、2%、1%TiCl3的SiO2/MTES复合薄膜分别在250nm附近有一弱激发峰,294nm附近有一强激发峰,在393nm附近出现一强发射峰;掺杂3%的复合薄膜荧光发射强度达到值最大。与Ti3+掺杂的常规SiO2薄膜比较,Ti3+掺杂的SiO2/MTES复合薄膜的荧光强度更稳定。
Titanium trichloride doped silica/methyltriethoxysilane（MTES） coating was prepared by sol-gel method. The properties of the coating were characterized with luminescence spectroscopy,scanning probe microscope （SPM）,X-ray diffractometer（XRD） and IR spectroscopy. The result shows that 4%, 3%, 2%, 1% of TiCl3 doped SiO2/MTES coating gives an excitation spectrum with two maxima,one at the wavelength of 250nm,another at the wavelength of 294nm. The emission spectrum is strong with a maximum at 393nm. The silica coating doped with 3% TiCl3 gives the best fluorescence emission. It is found that the fluorescence of Ti^3＋ in the silica/ methyltriethoxysilane（MTES） coating is stable beyond 30 days.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2008年第9期1500-1503,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(10476012)
