文献类型：期刊文献

英文题名：Patterning of Polymer-Functionalized Nanoparticles with Varied Surface Mobilities of Polymers

作者：Gong, Shuting[1];Wang, Tianyi[1];Lin, Jiaping[1];Wang, Liquan[1]

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

年份：2023

卷号：16

期号：3

外文期刊名：MATERIALS

收录：;EI(收录号：20230713586035);WOS:【SCI-EXPANDED(收录号:WOS:000930432900001)】；

基金：This work was supported by the National Natural Science Foundation of China (22173030, 51833003, 21975073, and 51621002) and Shanghai Scientific and Technological Innovation Projects (22ZR1417500).

语种：英文

外文关键词：polymer-functionalized nanoparticle; polymer mobility; surface pattern; self-consistent field theory; broken symmetry

摘要：The polymers can be either dynamically tethered to or permanently grafted to the nanoparticle to produce polymer-functionalized nanoparticles. The surface mobility of polymer ligands with one end anchored to the nanoparticle can affect the surface pattern, but the effect remains unclear. Here, we addressed the influence of lateral polymer mobility on surface patterns by performing self-consistent field theory calculations on a modeled polymer-functionalized nanoparticle consisting of immobile and mobile brushes. The results show that except for the radius of nanoparticles and grafting density, the fraction of mobile brushes substantially influences the surface patterning of polymer-functionalized nanoparticles, including striped patterns and patchy patterns with various patches. The number of patches on a nanoparticle increases as the fraction of mobile brushes decreases, favored by the entropy of immobile brushes. Critically, we found that broken symmetry usually occurs in patchy nanoparticles, associated with the balance of enthalpic and entropic effects. The present work provides a fundamental understanding of the dependence of surface patterning on lateral polymer mobility. The work could also guide the preparation of diversified nanopatterns, especially for the asymmetric patchy nanoparticles, enabling the fundamental investigation of the interaction between polymer-functionalized nanoparticles.