Surface Patterns of a Tetrahedral Polyelectrolyte Brush Induced by Grafting Density and Charge Fraction

Hong-Ge Tan; Gang Xia; Li-Xiang Liu; Xiao-Hui Niu; Qing-Hai Hao

doi:10.1007/s10118-020-2351-8

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Surface Patterns of a Tetrahedral Polyelectrolyte Brush Induced by Grafting Density and Charge Fraction

ARTICLE | Updated：2019-11-08

- Surface Patterns of a Tetrahedral Polyelectrolyte Brush Induced by Grafting Density and Charge Fraction
- Surface Patterns of a Tetrahedral Polyelectrolyte Brush Induced by Grafting Density and Charge Fraction
- Chinese Journal of Polymer Science 2020年38卷第4期页码：394-402
- Affiliations：
  
  College of Science, Civil Aviation University of China, Tianjin 300300, China
- Author bio：
  
  thg@iccas.ac.cn
  Hao, Q. H
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 21474005 and 21674005) and the Fundamental Research Funds for the Central Universities (No. 3122018L007) and Quality Course Construction.
- DOI：10.1007/s10118-020-2351-8
  中图分类号：
- 收稿：2019-07-23，
  
  修回：2019-8-28，
  
  录用：2019-9-2，
  
  网络首发：2019-11-08，
  
  纸质出版：2020-04
- Accepted：
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Tan, H. G.; Xia, G.; Liu, L. X.; Niu, X. H.; Hao, Q. H. Surface patterns of a tetrahedral polyelectrolyte brush induced by grafting density and charge fraction. Chinese J. Polym. Sci. 2020, 38, 394–402

Hong-Ge Tan, Gang Xia, Li-Xiang Liu, et al. Surface Patterns of a Tetrahedral Polyelectrolyte Brush Induced by Grafting Density and Charge Fraction[J]. Chinese Journal of Polymer Science, 2020, 38(4): 394-402.
Tan, H. G.; Xia, G.; Liu, L. X.; Niu, X. H.; Hao, Q. H. Surface patterns of a tetrahedral polyelectrolyte brush induced by grafting density and charge fraction. Chinese J. Polym. Sci. 2020, 38, 394–402 DOI： 10.1007/s10118-020-2351-8.

Hong-Ge Tan, Gang Xia, Li-Xiang Liu, et al. Surface Patterns of a Tetrahedral Polyelectrolyte Brush Induced by Grafting Density and Charge Fraction[J]. Chinese Journal of Polymer Science, 2020, 38(4): 394-402. DOI： 10.1007/s10118-020-2351-8.

摘要

Abstract

A tetrahedral polyelectrolyte brush in the presence of trivalent counterions is researched under the condition of good solution by means of molecular dynamics simulations. Grafting density and charge fraction are varied to generate a series of surface patterns. Lateral microphase separation happens and various interesting pinned patches appear at appropriate charge fraction and grafting density. Through a careful analysis on the brush thickness

the pair correlation functions

the distributions of net charge

and the four states of trivalent counterions in the brush

we find that the ordered surface patterns and special properties are induced by the pure electrostatic correlation effect of trivalent ions even in the good solvent. Furthermore

the dependences of electrostatic correlation on the charge fraction of tethered chains are evaluated for fixed grafting density. Also

our results can serve as a guide for precise control over the stimuli-responsive materials rational and self-assembly of nanoparticles.

关键词

Keywords

references

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