发明授权
- 专利标题: Ionic liquid mediated sol-gel sorbents
- 专利标题(中): 离子液体介导的溶胶 - 凝胶吸附剂
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申请号: US13300943申请日: 2011-11-21
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公开(公告)号: US08623279B2公开(公告)日: 2014-01-07
- 发明人: Abdul Malik , Anne M. Shearrow
- 申请人: Abdul Malik , Anne M. Shearrow
- 申请人地址: US FL Tampa
- 专利权人: University of South Florida
- 当前专利权人: University of South Florida
- 当前专利权人地址: US FL Tampa
- 代理机构: Smith & Hopen, P.A.
- 代理商 Robert J. Varkonyl
- 主分类号: G01N30/60
- IPC分类号: G01N30/60
摘要:
Ionic liquid (IL)-mediated sol-gel hybrid organic-inorganic materials present enormous potential for effective use in analytical microextraction. One obstacle to materializing this prospect arises from high viscosity of ILs significantly slowing down sol-gel reactions. A method was developed which provides phosphonium-based, pyridinium-based, and imidazolium-based IL-mediated advanced sol-gel organic-inorganic hybrid materials for capillary microextraction. Scanning electron microscopy results demonstrate that ILs can serve as porogenic agents in sol-gel reactions. IL-mediated sol-gel coatings prepared with silanol-terminated polymers provided up to 28 times higher extractions compared to analogous sol-gel coatings prepared without any IL in the sol solution. This study shows that IL-generated porous morphology alone is not enough to provide effective extraction media: careful choice of the organic polymer and the precursor with close sol-gel reactivity must be made to ensure effective chemical bonding of the organic polymer to the created sol-gel material to be able to provide the desired sorbent characteristics.
公开/授权文献
- US20120128551A1 IONIC LIQUID MEDIATED SOL-GEL SORBENTS 公开/授权日:2012-05-24
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