Poly(Rhodamine B) modified carbon paste electrode for the selective detection of dopamine

Thomas, Tony; Mascarenhas, Ronald J.; Swamy, B.E. Kumara

doi:10.1016/j.molliq.2012.07.022

Cited by 43 publications

(7 citation statements)

References 95 publications

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“…In this present work, we have been successful in constructing yet another modified carbon paste electrode to add to our earlier work −. Our main objective here was to fabricate a simple, economical and highly sensitive modified CPE to explore the electrochemical behavior of (I) as this had not been reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Application of a Nanosensor Based on MWCNT‐Sodium Dodecyl Sulphate Modified Electrode for the Analysis of a Novel Drug, Alpha‐Hydrazinonitroalkene in Human Blood Serum

et al. 2017

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The sensitivity enhancing properties of sodium dodecyl sulphate (SDS) and multi‐walled carbon nanotubes (MWCNTs) were associated to construct a nanosensor based on carbon paste electrode (CPE) by adopting drop cast method. The drop cast method makes use of minimum modifier and the entire modified surface of the sensor is available for the analyte. Surface characterization of the electrodes was carried out using FE‐SEM and EDX. EIS was used for the electrochemical characterization. We report for the first time the electrochemical analysis based on the oxidation of the ‐OH group of a novel drug, alpha‐hydrazinonitroalkene (I) which was found to have antibacterial and antimicrobial properties. The electron transfer kinetic parameters such as the charge transfer coefficient α and heterogeneous rate constant k′ were calculated and they have been found to be 0.64 and 9.62 × 10−2 cm s−1 respectively. The linear response ranges for (I) obtained at this sensor are 1.0 × 10−7 M − 7.0 × 10−7 M and 1.0 × 10−6 M – 4.5 × 10−5 M with a detection limit of (7.03 ± 0.41) × 10−8 M (S/N=3). The interference study suggested that the sensor was free from 1000‐fold excess of UA in the determination of (I). It was important to note that the sensor completely eliminated Ascorbic acid (AA) signal which offered a significant analytical advantage for the determination of the drug at this sensor. The practical usefulness of the modified sensor was demonstrated by the analysis of (I) in blood serum.

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Section: Introductionmentioning

confidence: 99%

Application of a Nanosensor Based on MWCNT‐Sodium Dodecyl Sulphate Modified Electrode for the Analysis of a Novel Drug, Alpha‐Hydrazinonitroalkene in Human Blood Serum

et al. 2017

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“…As an extension of our effort to use CPE and modied CPE for different biomedical applications, [38][39][40][41][42][43] the current work is aimed at utilizing the synergic effect of both MWCNTs and DCPIP lm in the electrode material and at developing a sensor for practical applications. To the best of our knowledge, there are no reports of electropolymerization of DCPIP for the determination of Tyr.…”

Section: Introductionmentioning

confidence: 99%

A multi-walled carbon nanotube/poly-2,6-dichlorophenolindophenol film modified carbon paste electrode for the amperometric determination of l-tyrosine

et al. 2015

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“…Therefore, the chemically modified carbon paste electrodes (CMCPEs) have extensive analytical applications 30, 31. Besides, different types of CMCPEs have been used for the electro‐chemical determination of DA 28, 32–43.…”

Section: Introductionmentioning

confidence: 99%

Methylthiouracil‐modified Carbon Paste Electrode as a New Voltammetric Sensor Based on a 1,4‐Michael Addition Reaction for Detection of Dopamine

et al. 2015

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[a] 1Introduction Dopamine (DA) is ac atecholamine derivative,a nd, as an eurotransmitter, plays am ajor rolei na ddiction [ 1]. Dopamine affects the brain processes that control movement, emotional response,a nd the ability to experience pleasure and pain. Regulation of DA plays ac ritical role in our psychological and physical health [2].S erious diseases such as Schizophrenia and Parkinsonism may result from the losso fD A-containing neurons [3][4][5].T herefore, the development of simple and selective methods is of interest for the detection and determination of DA by the neuroscientists and chemists.T he use of severalm ethods such as flow injection [6,7],high performance liquidchromatography (HPLC) [8,9],g as chromatography [10],a nd spectrophotometry [11] have been reported for the determination of DA in different samples.A lthough these methods may provideh igh selectivity,t hey also bring some disadvantages such as the operation complexity, time consumption, and use of high-cost instruments. Amongt he differenta nalyticalm ethods,t he electrochemical determination method has demonstrated to be highly sensitive and reliable,w ith less interference from the non-electroactive substancesf or the determination of several electroactive components [12][13][14].R ecently,d evelopment of voltammetric sensors based upon the chemically modified electrodes (CMEs) has receivedc onsiderable interest in the DA detection and determination. Up to the presentt ime,d ifferentC MEss uch as the polymerized electrodes [15][16][17],c arbon ionic liquid electrodes [18][19][20], nano-material-modified electrodes [21][22][23],a nd self-assembled monolayers [24][25][26] have been used in the voltammetric sensingo fD A. Them ain intrinsic disadvantages of such CMEs are their poor stability,n on-uniform thickness of the adsorbed films,a nd poor reproducibility of the electrodes.F urthermore,t he electrode surface cannot be renewed, and thust he irreversible adsorption of contaminationa nd the memory effect have destructive effects on the routine determination of DA.Anew reproducible surface,a bility to control the amounto fm odifier, al ow residual current, and ap orous surface could be obtained by modificationo ft he carbon paste electrodes (CPEs). Chemical modification of CPEs is carriedo ut simply by bulk modification, in which, the modifieri si ncorporated into the CPE matrix [27][28][29].T herefore,t he chemically modified carbon paste electrodes (CMCPEs) have extensive analyticala pplications [30,31].B esides, different types of CMCPEs have been used for the electro-chemical determination of DA [28,[32][33][34][35][36][37][38][39][40][41][42][43].1,4-Michael addition reactioni sawell-known protocol, which has been widely appliedtothe electrochemical synthesis of different organic compounds [44][45][46].I nt his procedure,t he oxidation of catechol derivatives (as substrate) yields the corresponding o-benzoquinones,s ince the electro-generated o-benzoquinonesa re active intermediates,a nd readily undergoM ichael addition re...

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Poly(Rhodamine B) modified carbon paste electrode for the selective detection of dopamine

Cited by 43 publications

References 95 publications

Application of a Nanosensor Based on MWCNT‐Sodium Dodecyl Sulphate Modified Electrode for the Analysis of a Novel Drug, Alpha‐Hydrazinonitroalkene in Human Blood Serum

Application of a Nanosensor Based on MWCNT‐Sodium Dodecyl Sulphate Modified Electrode for the Analysis of a Novel Drug, Alpha‐Hydrazinonitroalkene in Human Blood Serum

A multi-walled carbon nanotube/poly-2,6-dichlorophenolindophenol film modified carbon paste electrode for the amperometric determination of l-tyrosine

Methylthiouracil‐modified Carbon Paste Electrode as a New Voltammetric Sensor Based on a 1,4‐Michael Addition Reaction for Detection of Dopamine

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