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Thermoresponsive Supramolecular Dendrimers via Host–Guest Interactions

Authors

  • Jiatao Yan,

    1. The State Key Laboratory of Molelar Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Handan Street 220, Shanghai 200433, China
    2. Department of Polymer Materials, Shanghai University, Chengzhong Street 20, Shanghai 201800, China
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  • Xiaoqian Zhang,

    1. Department of Polymer Materials, Shanghai University, Chengzhong Street 20, Shanghai 201800, China
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  • Xiuqiang Zhang,

    1. Department of Polymer Materials, Shanghai University, Chengzhong Street 20, Shanghai 201800, China
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  • Kun Liu,

    1. Department of Polymer Materials, Shanghai University, Chengzhong Street 20, Shanghai 201800, China
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  • Wen Li,

    Corresponding author
    1. Department of Polymer Materials, Shanghai University, Chengzhong Street 20, Shanghai 201800, China
    • Department of Polymer Materials, Shanghai University, Chengzhong Street 20, Shanghai 201800, China.
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  • Peiyi Wu,

    Corresponding author
    1. The State Key Laboratory of Molelar Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Handan Street 220, Shanghai 200433, China
    • The State Key Laboratory of Molelar Engineering of Polymers, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Handan Street 220, Shanghai 200433, China
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  • Afang Zhang

    1. Department of Polymer Materials, Shanghai University, Chengzhong Street 20, Shanghai 201800, China
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Abstract

A series of first- and second-generation supramolecular dendrimers (SDs) was prepared via host–guest interaction from the cyclodextrin trimer and oligoethylene glycol (OEG)-based threefold dendritic guests. These SDs are water soluble at room temperature but show characteristic thermoresponsive behavior at elevated temperatures. Their thermoresponsiveness was investigated by UV–Vis spectroscopy and dynamic light scattering measurements. Supramolecular complexation from a mixture of two dendritic guests with different hydrophilicity was performed to check the feasibility to tune the phase transition temperatures of codendrimers. Based on temperature-varied 1H NMR spectra, it was found that the SDs start to decompose when the OEG units are dehydrated.

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