One-pot Electro-polymerized SDPAS/PPy/CNTs Modified Electrode for Selective Detection of Dopamine

Shuangyan Liu; Lei Wang; Guoyi Duan; Linan Wang; Zia Ul Haq Khan; Yanzhi Sun; Yongmei Chen; Pingyu Wan

doi:10.1002/elan.201800146

One-pot Electro-polymerized SDPAS/PPy/CNTs Modified Electrode for Selective Detection of Dopamine

Shuangyan Liu, Lei Wang, Guoyi Duan, Linan Wang, Zia Ul Haq Khan, Yanzhi Sun, Yongmei Chen^*, Pingyu Wan

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

To improve the performance of dopamine (DA) detection in the presence of ascorbic acid (AA) and uric acid (UA), sodium diphenylamine sulfonate/polypyrrole/multi-walled carbon nanotubes (SDPAS/PPy/CNTs) film was fabricated on the surface of gold electrode through one-pot polymerization initiated by electrochemical oxidation. SDPAS were covalently embedded into the backbone of PPy to endow the resultant film with numerous negative-charged terminals, resulting in selective pre-adsorption of protonated DA⁺ on the electrode and switching the following anodic reaction to be an adsorption-controlled process. The detection of DA in the presence of AA and UA by square wave voltammetry method showed an outstanding repeatability with the relative standard deviation of 0.45 %. A good linear relationship was observed between the oxidative peak current and the concentration of DA in the range of 0.827–104 μM (R²=0.993), and the limit of detection (LOD) was calculated to be 0.105 μM (S/N=3).

Original language	English
Pages (from-to)	2035-2043
Number of pages	9
Journal	Electroanalysis
Volume	30
Issue number	9
DOIs	https://doi.org/10.1002/elan.201800146
Publication status	Published - Sept 2018
Externally published	Yes

Keywords

Carbon nanotube
Dopamine
Noncovalent interactions
Polypyrrole
Sodium diphenylamine sulfonate

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10.1002/elan.201800146

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@article{5a975240b1cf46cb8da26170f322da12,

title = "One-pot Electro-polymerized SDPAS/PPy/CNTs Modified Electrode for Selective Detection of Dopamine",

abstract = "To improve the performance of dopamine (DA) detection in the presence of ascorbic acid (AA) and uric acid (UA), sodium diphenylamine sulfonate/polypyrrole/multi-walled carbon nanotubes (SDPAS/PPy/CNTs) film was fabricated on the surface of gold electrode through one-pot polymerization initiated by electrochemical oxidation. SDPAS were covalently embedded into the backbone of PPy to endow the resultant film with numerous negative-charged terminals, resulting in selective pre-adsorption of protonated DA+ on the electrode and switching the following anodic reaction to be an adsorption-controlled process. The detection of DA in the presence of AA and UA by square wave voltammetry method showed an outstanding repeatability with the relative standard deviation of 0.45 %. A good linear relationship was observed between the oxidative peak current and the concentration of DA in the range of 0.827–104 μM (R2=0.993), and the limit of detection (LOD) was calculated to be 0.105 μM (S/N=3).",

keywords = "Carbon nanotube, Dopamine, Noncovalent interactions, Polypyrrole, Sodium diphenylamine sulfonate",

author = "Shuangyan Liu and Lei Wang and Guoyi Duan and Linan Wang and Khan, {Zia Ul Haq} and Yanzhi Sun and Yongmei Chen and Pingyu Wan",

note = "Publisher Copyright: {\textcopyright} 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2018",

month = sep,

doi = "10.1002/elan.201800146",

language = "English",

volume = "30",

pages = "2035--2043",

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T1 - One-pot Electro-polymerized SDPAS/PPy/CNTs Modified Electrode for Selective Detection of Dopamine

AU - Liu, Shuangyan

AU - Wang, Lei

AU - Duan, Guoyi

AU - Wang, Linan

AU - Khan, Zia Ul Haq

AU - Sun, Yanzhi

AU - Chen, Yongmei

AU - Wan, Pingyu

PY - 2018/9

Y1 - 2018/9

N2 - To improve the performance of dopamine (DA) detection in the presence of ascorbic acid (AA) and uric acid (UA), sodium diphenylamine sulfonate/polypyrrole/multi-walled carbon nanotubes (SDPAS/PPy/CNTs) film was fabricated on the surface of gold electrode through one-pot polymerization initiated by electrochemical oxidation. SDPAS were covalently embedded into the backbone of PPy to endow the resultant film with numerous negative-charged terminals, resulting in selective pre-adsorption of protonated DA+ on the electrode and switching the following anodic reaction to be an adsorption-controlled process. The detection of DA in the presence of AA and UA by square wave voltammetry method showed an outstanding repeatability with the relative standard deviation of 0.45 %. A good linear relationship was observed between the oxidative peak current and the concentration of DA in the range of 0.827–104 μM (R2=0.993), and the limit of detection (LOD) was calculated to be 0.105 μM (S/N=3).

AB - To improve the performance of dopamine (DA) detection in the presence of ascorbic acid (AA) and uric acid (UA), sodium diphenylamine sulfonate/polypyrrole/multi-walled carbon nanotubes (SDPAS/PPy/CNTs) film was fabricated on the surface of gold electrode through one-pot polymerization initiated by electrochemical oxidation. SDPAS were covalently embedded into the backbone of PPy to endow the resultant film with numerous negative-charged terminals, resulting in selective pre-adsorption of protonated DA+ on the electrode and switching the following anodic reaction to be an adsorption-controlled process. The detection of DA in the presence of AA and UA by square wave voltammetry method showed an outstanding repeatability with the relative standard deviation of 0.45 %. A good linear relationship was observed between the oxidative peak current and the concentration of DA in the range of 0.827–104 μM (R2=0.993), and the limit of detection (LOD) was calculated to be 0.105 μM (S/N=3).

KW - Carbon nanotube

KW - Dopamine

KW - Noncovalent interactions

KW - Polypyrrole

KW - Sodium diphenylamine sulfonate

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U2 - 10.1002/elan.201800146

DO - 10.1002/elan.201800146

M3 - Article

AN - SCOPUS:85047483877

SN - 1040-0397

VL - 30

SP - 2035

EP - 2043

JO - Electroanalysis

JF - Electroanalysis

IS - 9

ER -

One-pot Electro-polymerized SDPAS/PPy/CNTs Modified Electrode for Selective Detection of Dopamine

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Keywords

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