Fig. 4.

Fabrication of Janus nanoarchitectures with polymeric components. (A) Schematic illustration of the preparation of amphiphilic PS/P2VP Janus particles and a facile transformation of emulsion types achieved by adjusting the pH of the aqueous phase (bottom). Reproduced with permission from Ref. [78]. Copyright 2017, American Chemical Society. (B) Self-assembly of diblock copolymer polystyrene ​b-poly(4-vinylpyridine) (PS-b-P4VP) by an emulsion solvent evaporation method for the synthesis of patchy Janus particles with P4VP protuberances on their surface. Reproduced with permission from Ref. [79]. Copyright 2015, American Chemical Society. (C) Fabrication of biodegradable bicompartmental spherical, discoid, and rod-shaped microparticles via an electrohydrodynamic co-jetting of poly(lactide-co-glycolide) (PLGA) polymer solutions. Reproduced with permission from Ref. [80]. Copyright 2010, Wiley-VCH.