Size-Dependent Electrostatic Chain Growth of pH-Sensitive Hairy Nanoparticles

Authors

  • Prof. Haibing Xia,

    Corresponding author
    1. State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100 (P. R. China)
    • Haibing Xia, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100 (P. R. China)===

      Dayang Wang, Ian Wark Research Institute, University of South Australia, Adelaide, SA 5095 (Australia)===

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  • Ge Su,

    1. Ian Wark Research Institute, University of South Australia, Adelaide, SA 5095 (Australia)
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  • Prof. Dayang Wang

    Corresponding author
    1. Ian Wark Research Institute, University of South Australia, Adelaide, SA 5095 (Australia)
    • Haibing Xia, State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100 (P. R. China)===

      Dayang Wang, Ian Wark Research Institute, University of South Australia, Adelaide, SA 5095 (Australia)===

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  • H.X. is grateful to the Natural Science Foundation of China (51002086, 51172126, and 51021062) and the 973 Program (2010CB630702) for financial support. This research was also supported by NCET (2010) and the IIFSDU (2010JQ013). D.W. thanks the Australian Research Council for financial support (DP 110104179 and DP 120102959).

Abstract

original image

Big and small, short and tall: Nanoparticles (NPs) coated with pH-sensitive polymers underwent reversible chain growth as a result of varying electrostatic interparticle repulsion as determined by the pH value. Tuning of the pH value also enabled the coupling of differently sized NPs to form linear composite chains reminiscent of block copolymers (see picture).

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