Crystal nucleation in colloidal rod suspensions: The effect of depletant size

被引：5

作者：

Wood, Jared A. ^{[1
,2
]}

Liu, Yawei ^{[1
]}

Widmer-Cooper, Asaph ^{[1
,2
]}

机构：

[1] Univ Sydney, ARC Ctr Excellence Exciton Sci, Sch Chem, Sydney, NSW 2006, Australia

[2] Univ Sydney, Nano Inst, Sydney, NSW 2006, Australia

来源：

JOURNAL OF CHEMICAL PHYSICS | 2021年 / 154卷 / 24期

基金：

澳大利亚研究理事会;

关键词：

GOLD NANORODS; ALIGNMENT;

D O I：

10.1063/5.0052623

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In order to better control the assembly of nanorods, knowledge of the pathways by which they form ordered structures is desirable. In this paper, we characterize crystal nucleation in suspensions of spherocylindrical rods with aspect ratio L/D = 2.3 in the presence of both small and large polymer depletants. Using a combination of Langevin dynamics and Monte Carlo simulations, together with biased sampling techniques, we show that the preferred pathway always involves the formation of monolayer assemblies irrespective of the volume fraction of the initial isotropic phase and the diameter of the depletants. This includes the previously neglected case of nucleation from the colloidal liquid phase and shows that the presence of depletion attraction can alter nucleation pathways even when the initial phase is dense. Published under an exclusive license by AIP Publishing.

引用

页数：10