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Article Abstract
Seven magnetic covalent organic framework molecularly imprinted polymers with magnetic responsiveness, large specific surface area, and molecular recognition ability were successfully synthesized, suitable for the separation of cyanidin-3--glucoside from complex samples. Using a room-temperature synthesis strategy, covalent organic frameworks accompanied by imprinted sites were formed in one step on the functionalized magnetic nanoparticles with 1,6-hexanediamine. The composite materials were easy to prepare and showed high adsorption capacity (127 mg g) together with favorable adsorption selectivity for cyanidin-3--glucoside over other flavonoids and phenolic acids. Magnetic covalent organic framework molecularly imprinted polymers exhibited good stability in 10 adsorption-desorption cycles. This work established a new method of extracting and separating high-purity anthocyanins and even unstable natural compounds.
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| http://dx.doi.org/10.1021/acsami.9b21460 | DOI Listing |
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