Abstract
Poly(ethylene glycol) is commonly
used as a polar polymer for immobilization on a substrate’s surface. However,
immobilization of polar polymers, including PEG, on a substrate’s surface is
still considered a challenge to surface chemists. The resulting substrates
often display long extraction time, low solvent resistance, and low thermal
stability. In addition, even though the incorporation of PEG polymer in the
sol-gel matrix (sol-gel coating technology) improves solvent resistance and
thermal stability of the composite material, the limited polarity of PEG
remains a problem when employed to target highly polar analytes.FIU inventors have designed and
synthesized highly polar chromatographic stationary phases and adsorption
sorbents comprising a sol-gel network of metal(s) oxide precursor condensed
with highly polar polyhydroxy molecule(s). This synthesis offers a simple and
environmental friendly approach of immobilization of highly polar molecules to
a metal oxide network for use as superpolar stationary phase and/or extraction
sorbent. The resulting superpolar sorbent networks can have properties derived
from being a sol-gel inorganic/hybrid organic-inorganic polymeric network that
can be formulated to display adjustable porosity, tunable selectivity, high
thermal stability, solvent stability, and wide pH stability.
Benefit
Provides highly polar chromatographic stationary phases and adsorption sorbents for solid phase extraction or solid phase microextraction that can be effectively applied for polar, medium polar, nonpolar, and polarizable analytesProvides substrate with adjustable porosity, tunable selectivity, high thermal stability, solvent stability, and a wide range of pH stabilityOffers a simple, highly reproducible, and environmentally friendly synthesis
Market Application
Can be an element of a sampling device, for example an extraction device such as a fiber superpolar microextraction fiber, superpolar microextraction tube, superpolar microextraction membrane, superpolar microextraction stir bar, superpolar microextraction fabric, superpolar microextraction capsule, or superpolar microextraction vial, or solid phase extractor selected from a matrix solid phase dispersant, a magnetic solid phase extractor, or a dynamic fabric phase sorptive extractorCan be a component of an analytical device such as gas chromatograph, and liquid chromatograph stationary phase
Brochure
