Self-assembly Induced by Complexation of Diblock Copolyelectrolytes and Oppositely Charged Homopolymers

Ling Zhao; Zhi-Yuan Yin; Jia-Di Jiang; Er-Qiang Chen; Shuang Yang

doi:10.1007/s10118-024-3080-1

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Self-assembly Induced by Complexation of Diblock Copolyelectrolytes and Oppositely Charged Homopolymers

RESEARCH ARTICLE | Updated：2024-08-27

- Self-assembly Induced by Complexation of Diblock Copolyelectrolytes and Oppositely Charged Homopolymers
- Self-assembly Induced by Complexation of Diblock Copolyelectrolytes and Oppositely Charged Homopolymers
- 高分子科学（英文版） 2024年42卷第9期页码：1321-1332
- Affiliations：
  
  a.Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center for Soft Mater Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  b.Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
- Author bio：
  
  eqchen@pku.edu.cn (E.Q.C.)
  shuangyang@pku.edu.cn (S.Y.)
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (NSFC) (Nos. 22073002, 51921002 and 22373008).
- DOI：10.1007/s10118-024-3080-1
  中图分类号：
- 收稿：2023-10-31，
  
  修回：2023-11-30，
  
  录用：2023-12-11，
  
  网络首发：2024-01-26，
  
  纸质出版：2024-09-01
- Accepted：
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Zhao, L.; Yin, Z. Y.; Jiang, J. D.; Chen, E. Q.; Yang, S. Self-assembly induced by complexation of diblock copolyelectrolytes and oppositely charged homopolymers. Chinese J. Polym. Sci. 2024, 42, 1321–1332

Ling Zhao, Zhi-Yuan Yin, Jia-Di Jiang, et al. Self-assembly Induced by Complexation of Diblock Copolyelectrolytes and Oppositely Charged Homopolymers[J]. Chinese Journal of Polymer Science, 2024, 42(9): 1321-1332.
Zhao, L.; Yin, Z. Y.; Jiang, J. D.; Chen, E. Q.; Yang, S. Self-assembly induced by complexation of diblock copolyelectrolytes and oppositely charged homopolymers. Chinese J. Polym. Sci. 2024, 42, 1321–1332 DOI： 10.1007/s10118-024-3080-1.

Ling Zhao, Zhi-Yuan Yin, Jia-Di Jiang, et al. Self-assembly Induced by Complexation of Diblock Copolyelectrolytes and Oppositely Charged Homopolymers[J]. Chinese Journal of Polymer Science, 2024, 42(9): 1321-1332. DOI： 10.1007/s10118-024-3080-1.

摘要

We study the self-assembly of oppositely charged diblock copolymer and homopolymer based on ion-pair model. By use of self-consistent field theory

we investigate the influence of homopolymer content on the self-assembled structures systematically and calculate the phase diagrams under different conditions.

Abstract

We investigate the solution self-assembly of

a mixture of positively charged homopolymers and AB diblock copolymers

in which the A blocks are negatively charged

and the B blocks are neutral. The electrostatic complexation between oppositely charged polymers drives the formation of many ordered phases. The microstructures and phase diagrams are calculated using self-consistent field theory (SCFT) based on an ion-pair model with an equilibrium constant

$$ K $$

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=64482095&type=middle

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=64482095&type=

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=64482095&type=small

to characterize the strength of binding between positively and negatively charged monomers. The effects of the charge ratio

representing the ratio of charges from the homopolymer over all charges from polymers in the system

on the ordered structure are systematically studied

both for hydrophobic and hydrophilic A blocks. The charge ratio plays an important role in determining the phase boundaries in the phase diagram of salt concentration versus polymer concentration. We also provide information about the varying tendency of the domain spacing and core size of the spherical phase when the charge ratio is changed

and the results are in good agreement with experiments. These studies provide a deep understanding of the self-assembled microstructures of oppositely charged diblock copolymer-homopolymer systems.

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Keywords

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