Enantioselective separation of RS-mandelic acid using β-cyclodextrin modified Fe3O4@SiO2/Au microspheres?
Analyst Pub Date: 2018-04-20 DOI: 10.1039/C8AN00427G
Abstract
Chiral magnetic microspheres show great potential in direct enantioseparation. Herein novel chiral magnetic microspheres were prepared by self-assembling β-cyclodextrin on magnetic Fe3O4@SiO2/Au composite microspheres. The prepared materials were characterized by transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), vibrating sample magnetometry (VSM) and Fourier transform infrared spectroscopy (FTIR). The results showed that the functional microspheres have a three-ply structure and high saturation magnetization. β-Cyclodextrin-immobilized magnetic Fe3O4@SiO2/Au microspheres (Fe3O4@SiO2/Au/β-CD) were applied in the direct chiral separation of RS-mandelic acid. The analysis results of HPLC revealed that the Fe3O4@SiO2/Au/β-CD magnetic microspheres exhibited stronger enantioselective adsorption for R-mandelic acid than S-mandelic acid. The chiral selector functionalized magnetic microspheres are therefore expected to be an efficient and economical chiral separation method for use in further research.
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Journal Name：Analyst
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CAS no.: 89640-58-4
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