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Amphiphilic seven-arm star triblock copolymers with diverse morphologies in aqueous solution induced by crystallization and pH

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Abstract

Well-defined amphiphilic seven-arm star triblock copolymers containing hydrophobic crystalline poly(ε-caprolactone)(PCL) blocks, hydrophobic non-crystalline poly(tert-butyl acrylate)(PtBA) blocks and hydro-philic poly(ethylene glycol)(PEG) blocks were precisely synthesized by a combination of ring-opening polymeriza-tion(ROP), atom transfer radical polymerization(ATRP) and “click” reaction. Such star copolymers could self-assemble into “core-shell-corona” micelles and “multi-layer” vesicles depending on the fraction of each block. Meanwhile, the selective hydrolysis of middle PtBA blocks into the poly(acrylic acid)(PAA) blocks allowed the star block copolymers to further change their morphologies of aqueous aggregates in response to pH values.

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Authors and Affiliations

  1. Department of Oral and Maxillofacial Surgery, Affiliated Stomatology Hospital, College of Medicine, Zhejiang University, Hangzhou, 310006, P. R. China

    Ying Wang & Xiaodong Li

  2. Key Laboratory of Macromolecular Synthesis and Functionalization, Ministry of Education, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China

    Rui Sun, Pengfei Gou, Min Zuo, Weipu Zhu & Zhiquan Shen

Authors
  1. Rui Sun
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  2. Ying Wang
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  3. Pengfei Gou
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  4. Min Zuo
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  5. Xiaodong Li
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  6. Weipu Zhu
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  7. Zhiquan Shen
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Corresponding authors

Correspondence to Ying Wang or Weipu Zhu.

Additional information

Supported by the Distinguished Young Investigator Fund of Zhejiang Province, China(No.LR18B040001), the National Natural Science Foundation of China(No.51603180), the Fundamental Research Funds for the Central Universities, China (No.2017QNA4038) and the China Postdoctoral Science Foundation(No.2015M580517).

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Sun, R., Wang, Y., Gou, P. et al. Amphiphilic seven-arm star triblock copolymers with diverse morphologies in aqueous solution induced by crystallization and pH. Chem. Res. Chin. Univ. 34, 132–137 (2018). https://doi.org/10.1007/s40242-017-7218-3

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  • DOI: https://doi.org/10.1007/s40242-017-7218-3

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