Electrochemical detection of dopamine using water-soluble sulfonated graphene

Li, Sujuan; He, Jiahong; Zhang, Mengjie; Zhang, Rongxia; Lv, Xialei; Li, Shaohua; Pang, Huan

doi:10.1016/j.electacta.2013.03.176

Cited by 121 publications

(48 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…3 was equated by the linear regression equations of I pa (μA) = −(0.4706 ± 0.0001) lgc (μM) -(0.4809 ± 0.0003) (n = 3, R 2 = 0.9939); the detection limit was calculated to be 30 nM (S/N = 3). It was lower than some previous reports [34,35], illustrating C-dots/ILgraphene/GCE possesses improved sensitivity and a wide linear range. Table 1 showed a comparison of the methods, linear ranges, and detection limits by Pd, Ni, and other nanomaterials used for electrochemically determining dopamine in a phosphate buffer media.…”

Section: Detection Of Dopaminecontrasting

confidence: 39%

Enhanced voltammetric determination of dopamine using a glassy carbon electrode modified with ionic liquid-functionalized graphene and carbon dots

Zhuang

Wang

et al. 2016

Microchim Acta

View full text Add to dashboard Cite

The authors describe a dopamine (DA) sensor based on a glassy carbon electrode modified with a composite film composed of carbon dots (C-dots) and graphene functionalized with an ionic liquid. The C-dots were functionalized with carboxy groups whose negative charge promotes electrostatic attraction to the protonated amino groups in DA. The presence of an imidazole cation in the IL facilitates interaction with the C-dots and DA via electrostatic interactions and π-stacking forces. Under optimal conditions, the modified GCE display improved electrochemical response to DA compared to a bare GCE, or a GCE modified with C-dots or IL-graphene only. The oxidation current, measured best at a potential of 0.22 V (vs. Ag/AgCl) is linearly related to the DA concentration in the 0.1 to 600 μM range, with a 30 nM detection limit at a signal-to-noise ratio of 3. Ascorbic acid does not interfere even in large excess, and the sensor is stable for at least a month. The modified GCE was applied to the determination of DA in spiked fetal bovine serum and gave satisfactory results.

show abstract

Section: Detection Of Dopaminecontrasting

confidence: 39%

Enhanced voltammetric determination of dopamine using a glassy carbon electrode modified with ionic liquid-functionalized graphene and carbon dots

Zhuang

Wang

et al. 2016

Microchim Acta

View full text Add to dashboard Cite

show abstract

“…It is also an important neurotransmitter widely distributed in the mammalian central nervous systems. It has been discovered that, the lack of DA is associated with the debilitating ailment i.e., Parkinson's disease [18,19], HIV infection and Huntington's diseases. In the past 30 years, a variety of approaches, including spectrophotometry, colorimetry, chromatography, have been developed for the DA detection by different techniques.…”

Section: Insights In Analytical Electrochemistry Issn 2470-9867mentioning

confidence: 99%

Sodium Alpha Olefin Sulfonate Modified Carbon Paste Electrode Sensor for Dopamine: A Voltammetric Study

Cc¹,

Be²

2016

Insights Anal Electrochem

View full text Add to dashboard Cite

Sodium alpha olefin sulfonate, an anionic surfactant was modified in carbon paste electrode by immobilization technique. The surfactant modified carbon paste electrode (SAOS/MCPE) was applied for the electrochemical determination of dopamine. The modified electrode shows excellent electrocatalytic property towards DA at pH 7.2 in Phosphate Buffer solution (PBS). The effects of scan rate and concentration of dopamine was studied and the electrode process was adsorptioncontrolled processes. The modified electrode resolves the well-defined two peaks for dopamine and ascorbic acid which is absent for bare carbon paste electrode and simultaneous studies was studied by cyclic and differential pulse voltammetric techniques. The detection limit was found to be 1.051 × 10 -6 M respectively and the modified electrode shows good sensitivity and selectivity for dopamine.

show abstract

“…With sulfonating graphene, we successfully accelerated the electron transfer at the right positions while AA and UA oxidation won't happen on the sulfonated-G/GCE. [26] This modification decided the high selectivity to DA and conventional Nafion films can never hold a candle. Furthermore, by means of routine analysis in dopamine hydrochloride injection, we found the relative standard derivation (RSD, n = 5) was less than 2.0 %, indicating the real application in real pharmaceutical sample.…”

Section: For Other Detectionsmentioning

confidence: 99%

Our Contributions in Nanochemistry for Antibiosis, Electrocatalyst and Energy Storage Materials

Zhang

Wang

et al. 2017

The Chemical Record

Self Cite

View full text Add to dashboard Cite

This account mainly introduces and reviews our recent progress in three projects: antibacterial nanomaterial, electrocatalyst for detecting and electrode nanomaterial of energy storage device, especially the supercapacitor. Besides, our thought and idea about the design, fabrication and application of corresponding nanomaterials are sketched throughout the whole article in order to reveal the structure-function relationship and corresponding mechanism. In the end, we tend to attach importance to the bottleneck of nanomaterial's development and put forward our understanding in this field.

show abstract

Electrochemical detection of dopamine using water-soluble sulfonated graphene

Cited by 121 publications

References 44 publications

Enhanced voltammetric determination of dopamine using a glassy carbon electrode modified with ionic liquid-functionalized graphene and carbon dots

Enhanced voltammetric determination of dopamine using a glassy carbon electrode modified with ionic liquid-functionalized graphene and carbon dots

Sodium Alpha Olefin Sulfonate Modified Carbon Paste Electrode Sensor for Dopamine: A Voltammetric Study

Our Contributions in Nanochemistry for Antibiosis, Electrocatalyst and Energy Storage Materials

Contact Info

Product

Resources

About