Fig. 2
From: Enantiomer-selective magnetization of conglomerates for quantitative chiral separation
Properties of the nano-splitters and their application in selective crystallization. a The magnetic hysteresis loops of Fe3O4 MNPs and S-Fe-25–125 (inserted pictures: the aqueous dispersion of magnetic nano-splitters (bottle a) and the separability of the co-assemblies by placing an external magnetic field (bottle b). The time from state a to state b is within 20 s. b The TEM images of S-Fe-25–125 (inserted pictures: magnified images (top) and 3D model of the co-assemblies (bottom)). c The images of R and S-Asn•H2O crystals by using S-Fe-25–125 as additive. d the images of S and R-Asn•H2O crystals by using R-Fe-25–127 as the additive. e The variations of chemical yield and ee% of R/S-Asn•H2O crystals over time by using 0.5 wt% of S-Fe-25–125 as the additives for strong magnetic responsiveness of S-crystals, the solvent was slowly evaporated after 24 h (inserted picture: magnified images of the two kinds of crystals growing over time). Scale bars: 100 nm (a); 2 cm (c); 2 cm (d); 1 mm (e)
