Invention Grant
- Patent Title: Ionic liquid mediated sol-gel sorbents
- Patent Title (中): 离子液体介导的溶胶 - 凝胶吸附剂
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Application No.: US13300943Application Date: 2011-11-21
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Publication No.: US08623279B2Publication Date: 2014-01-07
- Inventor: Abdul Malik , Anne M. Shearrow
- Applicant: Abdul Malik , Anne M. Shearrow
- Applicant Address: US FL Tampa
- Assignee: University of South Florida
- Current Assignee: University of South Florida
- Current Assignee Address: US FL Tampa
- Agency: Smith & Hopen, P.A.
- Agent Robert J. Varkonyl
- Main IPC: G01N30/60
- IPC: G01N30/60

Abstract:
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.
Public/Granted literature
- US20120128551A1 IONIC LIQUID MEDIATED SOL-GEL SORBENTS Public/Granted day:2012-05-24
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