文献类型：期刊文献

英文题名：Polymerization-like kinetics of the self-assembly of colloidal nanoparticles into supracolloidal polymers

作者：Ma, Xiaodong[1];Zhou, Yaru[1];Zhang, Liangshun[1];Lin, Jiaping[1];Tian, Xiaohui[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, State Key Lab Bioreactor Engn, Key Lab Ultrafine Mat,Minist Educ,Sch Mat Sci & E, Shanghai 200237, Peoples R China

年份：2018

卷号：10

期号：35

起止页码：16873

外文期刊名：NANOSCALE

收录：;EI(收录号：20183805846251);WOS:【SCI-EXPANDED(收录号:WOS:000448419900056)】；

基金：This work was supported by the National Natural Science Foundation of China (21574040 and 21873029). We are grateful to Prof. A. H. E. Muller for his valuable comments on the present work.

语种：英文

外文关键词：Nanoparticles - Kinetics - Molecular dynamics - Monomers - Polymerization - Growth kinetics - Functional polymers - Medical applications

摘要：The self-assembly of colloidal nanoparticles is conceptually analogous to the polymerization of reactive monomers in molecular systems. However, less is known about the polymerization of colloidal nanoparticles into supracolloidal polymers. Herein, using coarse-grained molecular dynamics and theoretical analysis, we reveal the self-assembly mechanism and kinetics of colloidal nanoparticles constructed from triblock terpolymers. The results show that the formation pathway of supracolloidal polymers involves monomer condensation and oligomer coalescence through the manner of end-to-end collisions. In contrast to the polymerization kinetics of molecular systems, the simulations and theoretical analysis definitely demonstrate that the growth of supracolloidal polymers obeys diffusion-controlled step-growth polymerization kinetics with a variable rate coefficient, where the growth rate is dependent upon the concentration of colloidal nanoparticles and the molecular information of triblock terpolymers. Our findings possess wide implications for understanding the growth of supracolloidal polymers, which is important for the rational and precise design of one-dimensional self-assembled superstructures with new horizons for biomedical applications.