Application of a glassy carbon electrode modified with functionalized multi-walled carbon nanotubes as a sensor device for simultaneous determination of acetaminophen and tyramine

Raoof, Jahan Bakhsh; Ojani, Reza; Baghayeri, Mehdi; Amiri-Aref, Mohaddeseh

doi:10.1039/c2ay05494a

Cited by 52 publications

(20 citation statements)

References 45 publications

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“…From the tyramine titration spectra presented in Figure S6, the fluorescence quenching changes were seen significant in the initial additions and a linear correlation was observed in the concentration range (0.5–6 μM) of tyramine (Figure S6). From the fitted linear data (expressed as F=−1.59482 C+253729 (R 2 =0.99518), where F is represented by the fluorescence intensity and C is the concentration of tyramine), we have determined the LOD as 575 nM (∼79 ppb), which is very close to the LOD of tyramine reported by electrochemical/electroanalytical methods (voltametric sensor and amperometric biosensor) . A schematic representation of the SBE 7 βCD induced TO assembly and tyramine induced disassembly leading to sensing action is provided in Scheme .…”

Section: Resultssupporting

confidence: 61%

Supramolecular Assembly Induced Emission of Thiazole Orange with Sulfobutylether β‐cyclodextrin: A Stimuli‐Responsive Fluorescence Sensor for Tyramine

et al. 2019

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Modulation and control of stimuli responsive features of molecular assemblies in organized assemblies/cavitand macrocycles have received immense attention in many areas. In this study, we have established the formation of a discrete molecular assembly of thiazole orange (TO) dyes at the portals of the sulfobutylether β‐cyclodextrin (SBE7βCD) macrocycle leading to the evolution of a strong and distinct emission band from aggregated TO. The supramolecular assembly promoted portal aggregation of TO in its 1 : 4 (SBE7βCD : TO) composition, characterized by absorption, fluorescence, circular dichroism, ITC and 1H NMR measurements, was probed to be selectively responsive to tyramine among other biogenic amines/neurotransmitters. For the first time, the different extent of emission quenching of SBE7βCD : TO assembly in the presence of biogenic amines/neurotransmitters is translated to achieve a selective on‐off fluorescence sensor for the detection of tyramine against other neurotransmitters with a limit‐of‐detection (LOD) as low as ∼575 nM (79 ppb). The emission features of the assembly with changes in temperature is found to be highly reproducible even after several temperature cycles and is promising to design an optical supramolecular thermometer in the ambient temperature range.

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Section: Resultssupporting

confidence: 61%

Supramolecular Assembly Induced Emission of Thiazole Orange with Sulfobutylether β‐cyclodextrin: A Stimuli‐Responsive Fluorescence Sensor for Tyramine

et al. 2019

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“…Fig. Referring to the analytical performances of some recently published reports [43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58] (Table 2), it is found that the obtained detection limit in this work is lower than other modified electrodes, which is likely related that MWCNT-CTAB have high electrocatalytic and surface area effects. 6(b)).…”

Section: Linearity Range and Detection Limit Using Voltammetrymentioning

confidence: 66%

MWCNT–CTAB modified glassy carbon electrode as a sensor for the determination of paracetamol

et al. 2015

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An electrochemical sensor for sensitive detection of paracetamol (PCM) was developed by constructing the glassy carbon electrode (GCE) modified with multiwalled carbon nanotubecetyltrimethyl ammonium bromide (MWCNT-CTAB). Modification improves the redox kinetics of PCM with increased current intensity. A similar modification at CTAB modified GCE did not result in an impressive charge transfer. Detection limit of PCM was determined from differential pulse voltammetric (DPV) study and found to be 4.82×10 −9 M with a linear dynamic range of 4.0×10 −7 M to 4.0×10 −6 M. The interference studies showed that the modified electrode exhibits excellent selectivity in the presence of large excess of interferents and response is fast, stable, reliable, resistant to biofouling and can be applied for the real sample analysis in medical, pharmaceutical and biotechnological sectors.Kinetic parameters were determined using electrochemical approaches. The practical analytical application of this electrode was demonstrated by measurement of PCM content in PYREMOL 650 tablet and real sample analysis.

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“…The presence of non-diamond carbon impurity at the surface can be detected from the background voltammogram in a strong acid media, especially with the effect on the width of the potential domain, where the electrode is ideally polarizable. [54][55][56][57][58][59][60][61][62][63] The background for Nb/BDD ( Fig. 9) electrodes is featureless, low and ideally polarizable in the respective potential ranges from −380 to 1056 mV and from −420 to 1360 mV in 2.0 mol L −1 H 2 SO 4 .…”

Section: Effect Of Long Carbon Chain Molecule Into Diamond Initial Numentioning

confidence: 99%

“…The voltammograms also indicate that no significant level of non-diamond carbon impurities is present. The voltammograms show that the diamond has enough quality to be applied in electrodegradation and also does not have the different characteristics of voltammograms obtained on plates or wafers [54][55][56][57][58][59][60][61][62][63] …”

Section: Effect Of Long Carbon Chain Molecule Into Diamond Initial Numentioning

confidence: 99%

Large-Area Cylindrical Diamond Electrodes

Peterlevitz

Ceragioli

Teófilo

et al. 2012

ECS J. Solid State Sci. Technol.

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Cylindrical boron-doped diamond (c-BDD) electrodes were prepared onto several substrates materials with areas up to 35 cm 2 . The deposition of well-adherent diamond films onto the outer surface of cylindrical substrates was performed. Several diameter sizes and different substrates materials were studied. Diamond films adherence was improved by increasing the substrate surface roughness and by pyrolising castor oil or polyaniline polymer on substrate surface to accelerate the formation of diamond initial nuclei. Profilometry and scanning electron microscopy were used respectively to measure roughness of surface and to characterize the morphologies of the diamond films. The residual stress in the diamond films was characterized by Raman spectroscopy with depth series analysis. Voltammetric analysis using c-BDD electrodes were performed in acid media, revealing high quality diamond behavior.

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Application of a glassy carbon electrode modified with functionalized multi-walled carbon nanotubes as a sensor device for simultaneous determination of acetaminophen and tyramine

Cited by 52 publications

References 45 publications

Supramolecular Assembly Induced Emission of Thiazole Orange with Sulfobutylether β‐cyclodextrin: A Stimuli‐Responsive Fluorescence Sensor for Tyramine

Supramolecular Assembly Induced Emission of Thiazole Orange with Sulfobutylether β‐cyclodextrin: A Stimuli‐Responsive Fluorescence Sensor for Tyramine

MWCNT–CTAB modified glassy carbon electrode as a sensor for the determination of paracetamol

Large-Area Cylindrical Diamond Electrodes

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