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

Chemical communications (Cambridge, England)

PubMedID: 24575428

Zhu H, Gao L, Jiang X, Liu R, Wei Y, Wang Y, Zhao Y, Chai Z, Gao X. Positively charged graphene oxide nanoparticle: precisely label the plasma membrane of live cell and sensitively monitor extracellular pH in situ. Chem Commun (Camb). 2014;.
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.