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pH-responsive pseudorotaxane between comblike PEO-grafted triblock polymer and α-cyclodextrin

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Abstract

The pH-responsive inclusion complexation of comblike triblock polymer, P2VP-b-PPEOMA-b-P2VP, with α-cyclodextrin (α-CD) was studied. The triblock polymer was prepared by reversible addition–fragmentation chain transfer polymerization (RAFT) and formed inclusion complexes (ICs) after selective threading of the PEO segment of the triblock polymer through the cavities of α-CD units. For comparison, PPEOMA homopolymer was prepared, and the inclusion complexation with α-CD was also studied. The formed ICs were characterized by XRD and 1H NMR. The results revealed that P2VP-b-PPEOMA-b-P2VP can form ICs with α-CD even when forming micelles, and the introduction of P2VP had a great influence on the solution property and the stoichiometry of EO to CD of the inclusion complexes depending on the concentration and the pH of the solution.

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Acknowledgments

We thank the Hunan Normal University for providing start-up funds. We thank Dr. Zisheng Chao for giving support for the XRD experiments.

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, The Key Lab for Fine Processing of Resources and Advanced Materials of Hunan Province, Hunan Normal University, Changsha, 410081, China

    Xiubing Li, Junjie Xiao, Xi Wang, Chunwang Yi & Shengpei Su

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  1. Xiubing Li
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  2. Junjie Xiao
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  3. Xi Wang
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  5. Shengpei Su
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Correspondence to Xi Wang.

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Li, X., Xiao, J., Wang, X. et al. pH-responsive pseudorotaxane between comblike PEO-grafted triblock polymer and α-cyclodextrin. Colloid Polym Sci 292, 3243–3249 (2014). https://doi.org/10.1007/s00396-014-3265-1

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  • DOI: https://doi.org/10.1007/s00396-014-3265-1

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