Determination of Ddopamine and Ascorbate on Gold Nanoparticle and 4,4-bis (methanethiol) biphenyl (MTP) Self-assembled Monolayer Modified Gold Electrode

Authors

Hai-yan WANG, School of Chemistry and Chemical Engineering,Anhui University,Hefei 230039,Anhui,China;Department of Chemistry,chaohu College,Chaohu 230038,Anhui,China;
Peng LIU, School of Chemistry and Chemical Engineering,Anhui University,Hefei 230039,Anhui,China;
Ye WANG, School of Chemistry and Chemical Engineering,Anhui University,Hefei 230039,Anhui,China;
Bao-kang JIN, School of Chemistry and Chemical Engineering,Anhui University,Hefei 230039,Anhui,China;

Abstract

A new approach to construct an ampermetric biosensor was described.The 4,4-bis(methanethiol)biphenyl(MTP)is adsorbed on to a bare gold electrode to make self-assembled monolayers(MTP/Au SAMs).Then electrodeposited 2mg/mL HAuCl4 at-200 mV,NG/MTP/Au electrode was prepared.When a differential pulse voltammetric(DPV)technique was used,the peak separation between DA and AA is 155 mV.Hence,the selective determination of dopamine(DA)and ascorbate(AA)in the binary mixture system can be performed.Under the chosen conditions,the peak currents are correspondent linearly to the concentrations of DA and AA in the range of 5.0×10-7~1×10-4 mol·L-1 and 3.5×10-6~1.0×10-3mol·L-1,respectively.The correlation coefficients were 0.998.The detection limit were 1.5×10-7 mol·L-1 and 1.2×10-6 mol·L-1for DA and AA.

Keywords

dopamine, ascorbate, gold nanpoarticle, MTP, DPV

DOI Link

https://doi.org/10.61558/2993-074X.1793

Publication Date

2007-05-28

Online Available Date

2007-05-28

Revised Date

2007-05-28

Received Date

2007-05-28

Recommended Citation

Hai-yan WANG, Peng LIU, Ye WANG, Bao-kang JIN. Determination of Ddopamine and Ascorbate on Gold Nanoparticle and 4,4-bis (methanethiol) biphenyl (MTP) Self-assembled Monolayer Modified Gold Electrode[J]. Journal of Electrochemistry, 2007 , 13(2): 127-131.
DOI: 10.61558/2993-074X.1793
Available at: https://jelectrochem.xmu.edu.cn/journal/vol13/iss2/3

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