期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 190, 期 -, 页码 886-895出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2013.09.022
关键词
Electrochemically reduced GO; Porphyrin; Electrochemical biosensor; Dopamine; Serotonin
资金
- Science Research Program through National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2010-0007864]
Covalently bonded GO-P was prepared by the condensation reaction of graphene oxide (GO) and 5,15-pentafluorophenyl-10,20-p-aminophenylporphyrin (P). The prepared GO-P was characterized by FT-IR, UV-vis spectroscopy, XPS and FE-SEM. Electrochemically reduced GO-P (ERGO-P) was obtained by electrochemical reduction of GO-P in PBS solution of pH 5. The ERGO-P was employed to detect neurotransmitters such as dopamine (DA) and serotonin (5-HT). The effects of GO-P amount, pH (4.04-9.01) of PBS solution were investigated for the detection of DA and 5-HT. The detection limits of DA and 5-HT were 3.5 x 10(-2) mu M and 4.9 x 10(-3) mu M, respectively. Ascorbic acid (AA) as an interference material gives negligible effect on the DA and 5-HT responses, demonstrating the high selectivity of the proposed biosensor. (C) 2013 Elsevier B.V. All rights reserved.
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