期刊
NANOSCALE
卷 9, 期 3, 页码 1022-1027出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6nr08507e
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资金
- National Natural Science Foundation of China [21305025, 51571072, 21371071]
- China Postdoctoral Science Foundation [2015M81436]
- Heilongjiang Postdoctoral Science Foundation [LBH-Z15065]
- Fundamental Research Funds for the Central Universities [AUGA5710012715]
- Heilongjiang Postdoctoral Scientific Research Development Fund [LBH-Q14058]
We synthesize dumbbell-like FePt-Fe3O4 nanoparticles (NPs) and study their electrocatalytic oxidation and sensing of dopamine (DA). The FePt and Fe3O4 NPs are strongly coupled in the dumbbell structure and as a result, the dumbbell FePt-Fe3O4 NPs show the best activity for DA oxidation with the DA detection limit reaching 1 nM. They are used successfully to monitor the DA concentration increase induced by K+-stimulation of PC12 cells. Our data show that an electrode modified with dumbbell-like FePt-Fe3O4 NPs can serve as the most sensitive probe for real-time quantitative detection of DA in a neurological environment.
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