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Stable and oxidant responsive zwitterionic nanoclusters.

ABSTRACT: Zwitterions are promising ligands for the fabrication of non-toxic and non-interacting biomaterials. Sulfonamide-based monothiol zwitterionic ligands on gold nanocluster (AuNC) surfaces provide nanomaterials with stable colloidal properties and intense red emission in biological environments. The fluorescence intensity of the nanocluster can be modulated by reactive oxygen species (e.g. ?OH), allowing for quantitative and selective sensing of antioxidants (e.g. ascorbic acid) in real time.

SUBMITTER: Huo S 

PROVIDER: S-EPMC6397623 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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Stable and oxidant responsive zwitterionic nanoclusters.

Huo Shuaidong S   Jiang Ying Y   Jiang Ziwen Z   Landis Ryan F RF   Liang Xing-Jie XJ   Rotello Vincent M VM  

Nanoscale 20180401 16

Zwitterions are promising ligands for the fabrication of non-toxic and non-interacting biomaterials. Sulfonamide-based monothiol zwitterionic ligands on gold nanocluster (AuNC) surfaces provide nanomaterials with stable colloidal properties and intense red emission in biological environments. The fluorescence intensity of the nanocluster can be modulated by reactive oxygen species (e.g. ˙OH), allowing for quantitative and selective sensing of antioxidants (e.g. ascorbic acid) in real time. ...[more]

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