Determination of Ag+ ions by a graphene oxide based dual-output nanosensor with high selectivity

作者：Cheng, Rumei; Li, Lingli; Ou, Shengju; Bu, Yexu; Ge, Congcong; Dai, Liming^*; Xue, Yuhua^*

来源：RSC Advances, 2016, 6(43): 36218-36222.

DOI：10.1039/c6ra00048g

• RESONANCE RAYLEIGH-SCATTERING
• FLUORESCENCE TURN-ON
• SILVER NANOPARTICLES
• GRAPHITE OXIDE
• LIVING CELLS
• SPECTRA
• PROBE
• CHEMOSENSOR
• EXTRACTION
• METALS

A new highly selective chemosensor for Ag+ ions was designed and synthesized by covalently introducing well-known fluorophore 1,8-diaminonaphthalene (DAN) onto graphene oxide (GO) sheets. The resultant fluorescent sensor 1,8-diaminonaphthalene-graphene (GAP) was quenched due to the photoinduced electron transfer (PET) mechanism, and the intensity of second-order scattering (SOS) was enhanced upon addition of Ag+ ions. The fluorescent probe GAP exhibits no or a slight response to many other metal ions.

• 出版日期2016
• 单位温州医科大学