Nonclassical assembly pathways of anisotropic particles

Details Nonclassical assembly pathways of anisotropic particles Nonclassical assembly pathways of anisotropic particles

2009-12-10

arxiv.org/abs/0912.2066v2

J. Chem. Phys. 132, 194901 (2010)

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1063/1.3425661

Advances in synthetic methods have spawned an array of nanoparticles and bio-inspired molecules of diverse shapes and interaction geometries. Recent experiments indicate that such anisotropic particles exhibit a variety of 'nonclassical' self-assembly pathways, forming ordered assemblies via intermediates that do not share the architecture of the bulk material. Here we apply mean field theory to a prototypical model of interacting anisotropic particles, and find a clear thermodynamic impetus for nonclassical ordering in certain regimes of parameter space. In other parameter regimes, by contrast, assembly pathways are selected by dynamics. This approach suggests a means of predicting when anisotropic particles might assemble in a manner more complicated than that assumed by classical nucleation theory.

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