Stuctural Transitions of Solvent-free Oligomer-grafted Nanoparticles
Chremos, Alexandros; Panagiotopoulos, Athanassios Z.
Novel structural transitions of solvent-free oligomer-grafted nanoparticles are investigated by using molecular dynamics simulations of a coarse-grained bead-spring model. Variations in core size and grafting density lead to self-assembly of the nanoparticles into a variety of distinct structures. At the boundaries between different structures, the nanoparticle systems undergo thermoreversible transitions. This structural behavior, which has not been previously reported, deviates significantly from that of simple liquids. The reversible nature of these transitions in solvent-free conditions offers new ways to control self-assembly of nanoparticles at experimentally accessible conditions.
American Physical Society
structural transitions; oligomer-grafted nanoparticles
Previously Published As
Physical Review Letters, 107, 9/1/2011, 105503-1-5