The dissipative particle dynamics (DPD) simulations were performed to study the self-assembly behavior of amphiphilic nanoparticles in selective solvents. The effects of various parameters

including solvent selectivity

the length of grafting polymers and the grafting ratio of hydrophilic polymer to hydrophobic polymer

were studied. Then

the phase diagram of self-assembled morphology was constructed. A rich variety of morphologies

ranging from spherical aggregates

rod-like aggregates

two-dimensional membrane

and nanopore membrane were obtained as increasing the concentration of amphiphilic nanoparticles. Furthermore

the amphiphilic nanoparticles tend to self-assemble into the layered nano-aggregates when the solvent quality is poor (i.e.

aS-HL=40kBT/Rc

aS-HB=50×kBT/Rc)

and the porous networked aggregates were observed at high concentration of amphiphilic nanoparticles. The simulation results also revealed that the self-assembled aggregates are largely controlled by the concentration of amphiphilic nanoparticles and the ratios of grafting hydrophilic polymers to grafting hydrophobic polymers. In view of the rich self-assembly behavior of the parental nanoparticles

it has great potential application value in gas separation

detection

drug loading

catalyst carrier and other fields.