Super‐Stable, High‐Quality Fe3O4 Dendron–Nanocrystals Dispersible in Both Organic and Aqueous Solutions

Abstract
High‐quality Fe3O4 nanocrystals coated with stearate groups are successfully converted to dendron‐coated nanocrystals (dendron–nanocrystals). Poly(ethylene glycol) oligomers are used as major terminal groups for the dendron ligands, which afford excellent dispersibility of the dendron–nanocrystals in a broad spectrum of solvents, ranging from dichloromethane to water (see Figure).