4.7 Article

Positively charged graphene oxide nanoparticle: precisely label the plasma membrane of live cell and sensitively monitor extracellular pH in situ

Journal

CHEMICAL COMMUNICATIONS
Volume 50, Issue 28, Pages 3695-3698

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cc49325c

Keywords

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Funding

  1. National Key Basic Research Program of China [2013CB932703, 2013CB933704]
  2. Natural Science Foundation of China [31271072, 21390410]

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Polyethylene glycol modified graphene oxide (GO-PEG) nanoparticles were prepared, which were positively charged and fairly stable in buffer solution. The GO-PEG nanoparticles possess a special affinity to the plasma membrane of live cells, and their yellowish-green fluorescence is sensitively responsive to the extracellular physiological solution in situ.

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