A new type of chiral magnetic nanoparticle was prepared from covalently linked magnetic nanoparticles (Fe3 O4 ) and heptakis-(6-O-triisopropylsilyl)-β-cyclodextrin (6-TIPS-β-CD). The resulting selectors (TIPS-β-CD-MNPs) combined the good magnetic properties Fe3 O4 and efficient chiral recognition ability of 6-TIPS-β-CD. The enantioselectivity of TIPS-β-CD-MNPs towards 1-(1-naphthyl)ethylamine was six times higher than that of the parent β-CD modified Fe3 O4 particles.
Keywords: chirality; enantioselectivity; host-guest systems; magnetic properties; nanoparticles.
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