“Breathing” Vesicles with Jellyfish-like On–Off Switchable Fluorescence Behavior

Authors

  • Dr. Ruijiao Dong,

    1. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240 (China)
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  • Prof. Bangshang Zhu,

    1. Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240 (China)
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  • Prof. Yongfeng Zhou,

    Corresponding author
    1. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240 (China)
    • School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240 (China)
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  • Deyue Yan,

    1. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240 (China)
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  • Xinyuan Zhu

    Corresponding author
    1. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240 (China)
    2. Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240 (China)
    • School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240 (China)
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  • This research was sponsored by the National Natural Science Foundation of China (21074069, 91127047, 20974062, 30700175), the National Basic Research Program (2009CB930400, 2012CB821500, 2013CB834506), and China National Funds for Distinguished Young Scientists (21025417).

Abstract

original image

Controlled, deep breathing: Polymeric vesicles that exhibit reversible pH-induced “breathing” behavior accompanied by switchable fluorescence (see picture) were prepared through the aqueous self-assembly of an amphiphilic block copolymer. Mechanistic studies showed that this jellyfish-like breathing and light-emitting behavior originates from protonation- or deprotonation-induced changes in the conformation of the azobenzene chromophores.

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