疏水性二氧化硅气凝胶负载有机荧光探针
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摘要
气凝胶是流动相为气体的凝胶材料,具有低密度、高比表面积和良好的隔热性能,有着广泛的应用前景。本课题组开发了一种快速溶剂交换法,结合疏水处理及减压干燥方法,显著减少了常压干燥制备SiO_2气凝胶的时间与溶剂使用量。所得气凝胶具有疏水性能良好,粉末密度低至0.01g/cm~3,且对多种荧光物质良好的负载能力,有望应用于防水、隔热、微流体示踪、气体检测及温度指示等领域。
Aerogel is one kind of gel materials, of which the fluid phase is gas. Aerogels with their low density, large internal surface area, and low thermal conductivity have drawn great interest in various advanced applications. We developed a rapid solvent exchange metod followed by silation and vacuum-drying to make SiO_2 aerogel with much fewer solvent and time. The prepared aerogel with great hydrophobility, density as low as 0.01g/cm~3, and good adsoption ability to manyOrganic fluorescent probes is promising candidates fora range of applications such as waterproof, thermal insulation, microfluidic tracing, gas detecting and temperature indicating.
引文
[1]N.Hüsing,U.Schubert,Angew.Chem.Int.Ed.1998,37(1‐2):22.
    [2]Wei T Y,Chang T F,Lu S Y,et al.Journal of the American Ceramic Society,2007,90(7):2003.

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