Dumpling-Like Nanocomplexes of Foldable Janus Polymer Sheets and Spheres

The formation of object complexes between Janus nanosheets and cross-linked polystyrene (PS) microspheres is reported. Sheets with one side tethered with PS chains and the other with poly(2-vinyl pyridine) made from triblock terpolymers were confirmed to be foldable by the addition of acidic water to their dispersion in tetrahydrofuran (THF). When acidic water was added to a THF dispersion of the sheets in the presence of PS spheres of 226 nm, dumpling-like complexes of two different nanoobjects were obtained by wrapping the spheres with the sheets.