Preparation of cylindrical multi-compartment micelles by the hierarchical self-assembly of ABC triblock polymer in solution

Arzugul Muslim; Yi Shi; Yechao Yan; Dongdong Yao; Abulikemu Abudu Rexit

doi:10.1039/C5RA19002A

Preparation of cylindrical multi-compartment micelles by the hierarchical self-assembly of ABC triblock polymer in solution

Arzugul Muslim,^ac Yi Shi,^b Yechao Yan,^b Dongdong Yao^b and Abulikemu Abudu Rexit*^ac

* Corresponding authors

^a School of Chemistry and Chemical Engineering, Xinjiang Normal University, Urumqi, China
E-mail: aarexit@mail.ustc.edu.cn
Fax: +86 0991 4332683

^b Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, The Chinese Academy of Science, Beijing, China

^c School of Chemistry and Material Science, North West University, Xi'an, China
E-mail: arzu_hma@yahoo.com

Abstract

Amphiphilic linear ABC triblock copolymer PnBA₂₈-b-PS₃₇-b-P2VP₇₃ was prepared by the RAFT method and its two-step hierarchical self-assembly in selected solvents was explored. The triblock copolymer was refluxed in methanol and the micelle product was further dialyzed against acidic water. The effects of the concentration of copolymer on the morphology of the aggregates formed in methanol in the first step were investigated. The structures and morphologies of the micelles formed by the self-assembly were characterized with SEC, ¹H NMR, TEM and DLS. Spherical patchy micelles were obtained in the poor solvent, methanol, for PS and PnBA blocks during the first step assembly. The patchy micelles were dialyzed against water with a pH value of ∼3.0 and aggregated to form multi-compartment micelles (MCMs). The MCMs further aggregated when the concentration of patchy micelles was increased. Cylindrical MCMs were formed with 2 mg mL⁻¹ patchy micelles.

Article information

https://doi.org/10.1039/C5RA19002A

Article type

Paper

Submitted

15 Sep 2015

Accepted

22 Sep 2015

First published

24 Sep 2015

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RSC Adv., 2015,5, 85446-85452

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Preparation of cylindrical multi-compartment micelles by the hierarchical self-assembly of ABC triblock polymer in solution

A. Muslim, Y. Shi, Y. Yan, D. Yao and A. A. Rexit, RSC Adv., 2015, 5, 85446 DOI: 10.1039/C5RA19002A

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Preparation of cylindrical multi-compartment micelles by the hierarchical self-assembly of ABC triblock polymer in solution

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Preparation of cylindrical multi-compartment micelles by the hierarchical self-assembly of ABC triblock polymer in solution

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