Self-assembly of amphiphilic peanut-shaped nanoparticles

TL;DR

This study uses computer simulations to explore how amphiphilic peanut-shaped nanoparticles self-assemble into various structures, revealing complex dynamics and coexistence of different phases that suggest versatile experimental applications.

Contribution

It introduces a novel simulation approach to study hierarchical self-assembly of anisotropic nanoparticles, highlighting phenomena not explained by traditional packing arguments.

Findings

Identification of cluster, bilayer, and micelle phases

Observation of hierarchical assembly dynamics

Coexistence of bilayers and faceted polyhedra

Abstract

We use computer simulation to investigate the self-assembly of Janus-like amphiphilic peanut-shaped nanoparticles, finding phases of clusters, bilayers and micelles in accord with ideas of packing familiar from the study of molecular surfactants. However, packing arguments do not explain the hierarchical self-assembly dynamics that we observe, nor the coexistence of bilayers and faceted polyhedra. This coexistence suggests that experimental realizations of our model can achieve multipotent assembly of either of two competing ordered structures.