Nonclassical assembly pathways of anisotropic particles.
Nonclassical assembly pathways of anisotropic particles.
复制标题
各向异性粒子的非经典组装路径。
DOI：
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发表时间：
2009
影响因子：
4.4
通讯作者：
S. Whitelam
中科院分区：
文献类型：
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作者：
S. Whitelam
合成方法的进步催生了一系列纳米粒子和各种形状和相互作用几何形状的生物启发分子。最近的实验表明，这种各向异性粒子表现出多种非经典的自组装途径，通过不共享体材料结构的中间体形成有序的组装。本文将平均场理论应用于一个相互作用的各向异性粒子的原型模型，并在某些参数空间中发现了非经典排序的明显热力学动力。相比之下，在其他参数体系中，装配路径是由动力学选择的。这种方法提出了一种预测各向异性粒子何时可能以比经典成核理论假设的更复杂的方式聚集的方法。
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.