期刊
BIOSENSORS & BIOELECTRONICS
卷 64, 期 -, 页码 404-410出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2014.09.038
关键词
Polypyrrole; Graphene quantum dots; Dopamine; Fluorescent sensor
类别
资金
- National Natural Science Foundation of China [51272100, 51273073]
- Foundation of Jiangsu Collaborative Innovation Center of Biomedical Functional Materials
A facilely prepared fluorescent sensor was developed for dopamine (DA) detection with high sensitivity and selectivity based on polypyrrole/graphene quantum dots (PPy/GQDs) core/shell hybrids. The composites exhibit strong fluorescence emission, which is dramatically enhanced as high as three times than pristine GQDs. The prepared sensor allows a highly sensitive determination of DA by fluorescent intensity decreasing with the addition of DA and presents a good linearity in range of 5-8000 nM with the detection limit of 10 pM (S/N = 3). Furthermore, the application of the proposed approach have been demonstrated in real samples and showed promise in diagnostic purposes. (C) 2014 Elsevier B.V. All rights reserved.
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