文献类型：期刊文献

英文题名：Sequence-Regulated Supracolloidal Copolymers via Copolymerization-Like Coassembly of Binary Mixtures of Patchy Nanoparticles

作者：Ma, Xiaodong[1];Gu, Mengxin[1];Zhang, Liangshun[1];Lin, Jiaping[1];Tian, Xiaohui[1]

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

年份：2019

卷号：13

期号：2

起止页码：1968

外文期刊名：ACS NANO

收录：;EI(收录号：20190306392431);WOS:【SCI-EXPANDED(收录号:WOS:000460199400096)】；

基金：This work was supported by the National Natural Science Foundation of China (21574040, 21873029, and 51833003).

语种：英文

外文关键词：patchy nanoparticles; coassembly kinetics; step-growth copolymerization; sequence regulation; coarse-grained molecular dynamics

摘要：Synthetic copolymers of molecular systems serve as an inspiration for creation of one-dimensional copolymer-like super-structures via coassembly of anisometric nanoparticles. In contrast to the covalent and molecular copolymers, the details of formation mechanisms of copolymer-like superstructures, as well as the factors determining their length and the sequences of arranged nanoparticles, are still poorly understood. Herein, we propose a joint theoretical- computational framework to probe into the coassembly mechanism and kinetics of binary mixtures of patchy nanoparticles. By applying the coarse-grained molecular dynamics simulations, it is demonstrated that the coassembly of patchy nanoparticles markedly resembles many aspects of molecular step-growth copolymerization, and the sequences of nanoparticles inside the copolymer-like superstructures can be finely regulated by the relative activity and the initial ingredient of patchy nanoparticles as well as the coassembly strategy. A quantitatively copolymerization-like model is developed to account for the coassembly kinetics of patchy nanoparticles and the sequence distribution of arranged nanoparticles, all governed by the elaborate design of lower-level building units. The jointly theoretical and simulated studies offer mechanistic insights into the copolymerization-like kinetics and the sequence prediction for the coassembly of binary mixtures of patchy nanoparticles, paving the way toward the rational design of copolymer-like superstructures with various sequences and functionalities.