PEDOT-reduced graphene oxide-silver hybrid nanocomposite modified transducer for the detection of serotonin

Sadanandhan, Neethu Kalloor; Cheriyathuchenaaramvalli, Molji; Devaki, Sudha J.; Menon, A. R. R.

doi:10.1016/j.jelechem.2017.04.027

Cited by 54 publications

(20 citation statements)

References 49 publications

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“…Since DPV has a much current sensitivity and better peak separation in the simultaneous determination of the analytes than CV, the electroanalytical technique was used for determination of 5-HT. The limit of detection (LOD) of 5-HT oxidation on MWCNT-PANI modified GCE was calculated as 3.33 3 10 À8 mol L À1 with the equation LOD = 3.3 s/m, (s: the standard deviation of the response for supporting electrolyte, m: the calibration graph' slope). and scan rate 5 mV s À1 .…”

Section: Analytical Performance Of Mwcnt-pani/gce Towards 5-ht Detectionmentioning

confidence: 99%

“…P(EDOP)-SWNTs/GCE DPV 1.0 3 10 À7 -1.0 3 10 À5 5.0 3 10 À9 -[6] MIP-hemin Amperometry 1.0 3 10 À6 -1.0 3 10 À6 1.0 3 10 À3 Serum samples [22] CURC/GCE SWV 1.0 3 10 À7 -1.0 3 10 À5 3.0 3 10 À8 Human blood serum [38] Pt/MWCNT/PPy/AgNPs DPV 5.0 3 10 À7 -5.0 3 10 À6 1.5 3 10 À7 Plasmatic serum sample [16] MWCNT-Chitosan DPV 5.0 3 10 À8 -1.6 3 10 À5 5.0 3 10 À8 Serum samples [39] p(P3CA)/PGE AdDPSV 1.0 3 10 À8 -1.0 3 10 À6 2.5 3 10 À9 Blood serum Urine serum [19] Ion-selective electrode Potentiometry 2. …”

Section: Electrodesmentioning

confidence: 99%

“…Therefore, it plays a pivotal role in biological and physical processes by regulation mood, sleep, emesis, cardiovascular function and appetite [1][2][3][4]. Therefore, it plays a pivotal role in biological and physical processes by regulation mood, sleep, emesis, cardiovascular function and appetite [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…fluorimetry [8], chemiluminescence [9], HPLC-ECD [10,11], LC-MS [12,13], coulometry [14], capillary electrophoresis [15]. For this purpose, various materials including multiwalled carbon nanotubes [6,7,16,17], graphene based structure [5,3,18], conductive polymers [19][20][21], metal nanoparticles [1,3], metal oxides [2,5], and molecular imprinted polymers [22] have been used as modifiers for the serotonin determination in the literature. In this regard, electrochemical techniques are considered as the alternative tool for clinical diagnostic of 5-HT due to simplicity, fast response, high sensitivity and selectivity, ability to sense in living organism and in-vivo real time detection [3].…”

Section: Introductionmentioning

confidence: 99%

“…10 À7 À1.2 3 10 À5 3.33 10 À8 Synthetic urine sample This study P(EDOP)-SWNTs/GCE: poly(3,4-ethylenedioxy pyrrole)-single-walled carbon nanotube-glassy carbon electrode; MIP: molecularly imprinted polymer; CURC/GCE: C-undercylcalix[4]recorcinarene/GCE; SWV: square wave voltammetry; Pt/MWCNT/PPy/AgNPs: Pt electrode-MWCNT-poly(pyrrole)-Ag nanoparticles; p(P3CA)/PGE: poly(pyrrole-3-carboxylicacid)-pencil graphite electrode; AdDPSV: Adsorptive differential pulse stripping voltammetry; Fe 3 O 4 -MWCNTs-poly(BCG)/GCE: poly(bromocresol green); AuNPs@PPyNPs/SPE: Au nanoparticles@PPy nanoparticles/screen-printed electrodes; GI/WO 3 : gamma ray irradiated tungsten trioxide; PEDOTNTs/rGO/AgNPs: polyethylenedioxythiophene-redused graphene oxides-AgNPs.…”

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confidence: 99%

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Electrochemical Determination of Serotonin Using Pre‐treated Multi‐walled Carbon Nanotube‐polyaniline Composite Electrode

2018

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In this study, the multiwalled carbon nanotube‐poly (aniline) (MWCNT‐PANI) composite is successfully deposited on the glassy carbon electrode (GCE) by electropolymerization as an efficient and conventional route. The structural and chemical properties of the MWCNT‐PANI was investigated by various spectroscopic and analytical techniques, scanning electron microscopy (SEM), X‐Ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS). After that, the electrochemical oxidation behavior of serotonin (5‐HT) in phosphate buffer solution (pH 7.4) was examined using cyclic voltammetry (CV). Besides, the MWCNT‐PANI/GCE used for the detection of 5‐HT with linear concentration range (1.0×10−7–1.2×10−5 mol L−1), low limit of detection (3.3×10−8 mol L−1) under differential pulse voltammetric (DPV) conditions. The proposed electrochemical sensor based on MWCNT‐PANI is both time and cost effective, has good reproducibility, high selectivity as well as stability for 5‐HT determination. The developed composite electrode was used to detect 5‐HT in synthetic urine sample and satisfactory results were obtained with high recoveries.

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Section: Analytical Performance Of Mwcnt-pani/gce Towards 5-ht Detectionmentioning

confidence: 99%

Section: Electrodesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Electrochemical Determination of Serotonin Using Pre‐treated Multi‐walled Carbon Nanotube‐polyaniline Composite Electrode

2018

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Porous Poly(3,4‐ethylenedioxythiophene)‐Based Electrodes for Detecting Stress Biomarkers in Artificial Urine and Sweat

Borràs

Sánchez-Jiménez

Casanovas

et al. 2022

Macro Materials & Eng

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When danger is perceived, the human body responds to overcome obstacles and survive a stressful situation; however, sustained levels of stress are associated with health disorders and diminished life quality. Hence, stress biomarkers are monitored to control stress quantitatively. Herein, a porous sensor (4l‐COP/p) composed of poly(3,4‐ethylenedioxythiophene) (PEDOT) and poly(3,4‐ethylenedioxythiophene‐co‐N‐methylpyrrole) (COP), which is prepared in a four‐layered fashion to detect dopamine (DA) and serotonin (5‐HT), is presented. Specifically, the detection is conducted in phosphate‐buffered saline (PBS), as well as artificial urine and sweat, by applying cyclic voltammetry. The limit of detection values obtained are as low as 5.7 × 10−6 and 1.4 × 10−6 m for DA and 5‐HT, respectively, when assessed individually in artificial urine. When mixed in PBS, 4l‐COP/p detects both biomarkers with a resolution of 0.18 V and a sensitivity of 40 and 30 µA mm−1 for DA and 5‐HT, respectively. Additionally, by theoretical calculations, the interaction pattern that each stress biomarker establishes with the PEDOT outer layer is elucidated. Whereas DA interacts with the π‐system of PEDOT, 5‐HT forms specific hydrogen bonds with the conducting polymer chains. The resolution value obtained depends upon such interactions. Overall, 4l‐COP/p electrodes display potential as stress sensing devices for healthcare technologies.

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Carbon Nanotubes and Its Composites in Sensing of Drugs and Pesticides

Raman,

Singh,

Bahadur

et al. 2024

Advanced Functional Materials for Sustainable Environments

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PEDOT-reduced graphene oxide-silver hybrid nanocomposite modified transducer for the detection of serotonin

Cited by 54 publications

References 49 publications

Electrochemical Determination of Serotonin Using Pre‐treated Multi‐walled Carbon Nanotube‐polyaniline Composite Electrode

Electrochemical Determination of Serotonin Using Pre‐treated Multi‐walled Carbon Nanotube‐polyaniline Composite Electrode

Porous Poly(3,4‐ethylenedioxythiophene)‐Based Electrodes for Detecting Stress Biomarkers in Artificial Urine and Sweat

Carbon Nanotubes and Its Composites in Sensing of Drugs and Pesticides

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