Bean sprout peroxidase biosensor based on l-cysteine self-assembled monolayer for the determination of dopamine

Moccelini, Sally Katiuce; Fernandes, Suellen Cadorin; Vieira, Iolanda Cruz

doi:10.1016/j.snb.2008.02.039

Cited by 54 publications

(25 citation statements)

References 33 publications

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“…Dopamine (DA), a simple nontoxic organic chemical in the catecholamine family, is produced from the brains of many organisms including human, and it consists of an amine group linked to a catechol structure and plays a critical role in the function of the central nervous system . In past years, dopamine was also employed as reducing agent with oxidation of catechol groups to the quinone form .…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of dopamine reduced graphene oxide and its composites of epoxy

Zhu

et al. 2013

J of Applied Polymer Sci

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To improve the thermal and mechanical properties and further to expand its applications of epoxy in electronic packaging, reduced graphene oxide/epoxy composites have been successfully prepared, in which dopamine (DA) was used as reducing agent and modifier for graphene oxide (GO) to avoid the environmentally harmful reducing agents and address the problem of aggregation of graphene in composites. Further studies revealed that DA could effectively eliminate the labile oxygen functionality of GO and generate polydopamine functionalized graphene oxide (PDA-GO) because DA would be oxidated and undergo the rearrangement and intermolecular cross-linking reaction to produce polydopamine (PDA), which would improve the interfacial adhesion between GO and epoxy, and further be beneficial for the homogenous dispersion of GO in epoxy matrix. The effect of PDA-GO on the thermal and mechanical properties of PDA-GO/epoxy composites was also investigated, and the incorporation of PDA-GO could increase the thermal conductivity, storage modulus, glass transition (T g ), and dielectric constant of epoxy. V C 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39754.

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Section: Introductionmentioning

confidence: 99%

Preparation and properties of dopamine reduced graphene oxide and its composites of epoxy

Zhu

et al. 2013

J of Applied Polymer Sci

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“…1.9671 (r = 0.9991). This linear range is much wider than the results obtained at other modified electrodes such as l-cysteine self-assembled monolayer modified gold electrode (9.91 9 10 -6 -2.21 9 10 -4 mol L -1 ) [24], or poly (p-nitrobenzenazo resorcinol)-modified glassy carbon electrode (8 9 10 -6 -2.85 9 10 -4 mol L -1 ) [25], and similar to cetylpyridine bromide (CPB)/chitosan composite film-modified glassy carbon electrode (4.0 9 10 -5 -5.0 9 10 -3 mol L -1 ) [4].…”

Section: Determination Of Damentioning

confidence: 62%

Selective determination of dopamine in the presence of ascorbic acid using ferrocenyl-tethered PAMAM dendrimers modified glassy carbon electrode

Chen

et al. 2010

J Appl Electrochem

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Determination of dopamine (DA) in the absence and presence of ascorbic acid (AA) by ferrocenyltethered PAMAM G3 dendrimers (Fc-D) modified glassy carbon electrode (GCE) was reported. The modified electrode was characterized with cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Factors influencing the detection processes were optimized and kinetic parameters were calculated. The sensor exhibited excellent catalytic activities for the oxidation-reduction reactions of DA and eliminated the interference of AA. Under optimal condition, the linear range of 1 9 10 -5 -1.5 9 10 -3 mol L -1 and the detection limit of 4.7 9 10 -6 mol L -1 was obtained. This study provides a new idea for the determination of DA in the presence of AA.

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“…In this case, the antibodies are immobilized on an electrode and must maintain their biological activity on the transducer [8]. One of the procedures is based on the formation of a self-assembled monolayer (SAM) on the electrode surface [9], which consists of the interaction of a highly-organized organic molecule layer on the surface and one of the functional groups of the selected organic molecule having the function of providing the biological material's immobilization (e.g., enzymes, proteins, nucleic acid, antibody, etc.) via the free functional group of SAM [10].…”

Section: Introductionmentioning

confidence: 99%

A Low-Cost Label-Free AFB1 Impedimetric Immunosensor Based on Functionalized CD-Trodes

et al. 2016

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This work describes the investigation of a label-free immunosensor for the detection of aflatoxin B 1 (AFB 1 ). CD-trodes (electrodes obtained from recordable compact disks) were used as low-cost and disposable transducers after modification with a self-assembled monolayer (SAM) of lipoic acid. The anti-aflatoxin B 1 antibody was immobilized via EDC/NHS activation, followed by blocking with bovine serum albumin and immunoassays with AFB 1 . The optimization of analytical parameters and the detection were carried out using electrochemical impedance measurements. Using chemometric tools, the best conditions for the immunosensor development were defined as: anti-AFB 1 antibody at 1:2000 dilution and surface blocking with 0.5% bovine serum albumin, both incubated for 1 h, and antibody-antigen immunoreaction for 30 min. The impedimetric immunosensor showed a linear range from 5 × 10 −9 to 1 × 10 −7 mol·L −1 (1.56-31.2 ng·mL −1 ), limit of detection and limit of quantification, respectively, 3.6 × 10 −10 and 1.1 × 10 −9 mol·L −1 (0.11 and 0.34 ng·mL −1 ). The proposed immunosensor was applied to analyze peanut samples.

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Bean sprout peroxidase biosensor based on l-cysteine self-assembled monolayer for the determination of dopamine

Cited by 54 publications

References 33 publications

Preparation and properties of dopamine reduced graphene oxide and its composites of epoxy

Preparation and properties of dopamine reduced graphene oxide and its composites of epoxy

Selective determination of dopamine in the presence of ascorbic acid using ferrocenyl-tethered PAMAM dendrimers modified glassy carbon electrode

A Low-Cost Label-Free AFB1 Impedimetric Immunosensor Based on Functionalized CD-Trodes

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