Optimization of dopamine determination based on nanowires PEDOT/polydopamine hybrid film modified electrode

Ordosgoitia, Rodrigo Daniel Salgado; Valle, M.; Durán, B.; Pardo, M. A.; Armijo, Francisco

doi:10.1007/s10800-014-0728-5

Cited by 21 publications

(7 citation statements)

References 27 publications

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“…78 Note that when using oligomeric thiophene species (e.g., 2,2′:5′,2″-terthiophene) as the starting unit, a more homogeneous and ordered PTh-nw can be obtained in mesochannels. 79,80 Similarly, poly(3,4-ethylenedioxythiophene) nanowires (PEDOT-nw), 81 PEDOT-nw/PtNPs 82 and PEDOT-nw/ polydopamine composites 83 were also prepared. PEDOT-nw/ polydopamine was employed for the selective detection of DA with a low limit of detection (LOD) in the presence of AA and UA.…”

Section: Spatial Confinement Effectmentioning

confidence: 99%

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Vertically ordered silica mesochannel films: electrochemistry and analytical applications

Yan

Lin

2016

Analyst

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Mesoporous silica films consisting of highly ordered and vertically aligned nanochannels (abbreviated as VMSFs) have received considerable attention because of their high surface area, long-range order, thermal and mechanical stability, controllable pore size and more importantly good molecular accessibility for rapid mass transport. These characteristics are ideal for electroanalytical chemistry and separation science. In this review, we firstly present briefly the strategies for the synthesis of VMSFs on the electrode surface, mainly the electrochemically assisted self-assembly and Stöber-solution growth approaches, as well as the surface modification of channel walls with diverse terminal groups for various functionalities. In the next section, recent progress on the applications of VMSFs in electroanalytical chemistry and sensing is summarized, in terms of the spatial confinement and permselective effects (size, charge and lipophilicity selectivity of the mesochannels). We then present the preparation and application of perforated free-standing VMSFs for fast and precise molecular sieving/separation. The review ends with an outlook and perspective on the future applications of VMSFs.

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Section: Spatial Confinement Effectmentioning

confidence: 99%

“…PEDOT-nw/ polydopamine was employed for the selective detection of DA with a low limit of detection (LOD) in the presence of AA and UA. 83 Poly(1-amino-9,10-anthraquinone) (P1AAQ) nanowires with a diameter of ca. 30 nm and a length of 200 nm were also prepared on the stainless steel electrode using VMSFs as the template.…”

Section: Spatial Confinement Effectmentioning

confidence: 99%

Vertically ordered silica mesochannel films: electrochemistry and analytical applications

Yan

Lin

2016

Analyst

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“…Therefore, these studies have reported a decrease of the energy cost involved in the electrocatalytic process and increasing the kinetics thereof, which results in lower oxidation potential and enhanced current density . However, this type of electrode has introduced two major problems: (i) difficulty in the complete removal of the mesoporous silica used as template for the production of nanowires and (ii) a low adhesion of the nanowires over the electrode surface, causing easy detachment . To solve the latter, i.e.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of electrodes modified by electrodepositedPEDOT‐nanowires with dispersedPt nanoparticles for formic acid electro‐oxidation

Ramírez

Valle

Armijo

et al. 2017

J of Applied Polymer Sci

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Preparation of electrodes modified with poly(3,4‐ethylenedioxythiophene) nanowires, PEDOT‐nw, was optimized using nanoparticles of dispersed Pt, Pt‐np, to be tested for HCOOH electro‐oxidation. The PEDOT‐nw is electrosynthesized directly on the working electrode, using mesoporous silica as template, by cyclic voltammetry from a 0.01 mol L−1 monomer + 0.1 mol L−1 tetrabutylammonium hexafluorophosphate solution in acetonitrile, on the Pt|PEDOT|mesoporous silica template previously modified electrodes. Using SEM, the presence of PEDOT nanowires with 20 to 25 nm in diameter was verified. In addition, its p‐doping response is about 500 times larger than that obtained on the bulk polymer, maintaining full reversibility of the process. The subsequent electrochemical insertion of Pt‐np and formation of Pt‐np with average diameter of about 20 nm, checked by TEM, demonstrated that the catalytic activity of this nanostructured electrode remarkably enhanced HCOOH electro‐oxidation. The obtained current is up to 2 orders of magnitude higher than previously reported in similar studies, using a much smaller amount of Pt and with a potential decrease greater than 100 mV. Thus, we have at our disposal a simple, inexpensive, and highly reproducible way to prepare in situ nanostructured electrodes using just electrochemical techniques, which can be useful on all the applications of these devices. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44723.

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“…The modified electrode was used to electrochemically detect riboflavin. Salgado et al [ 98 ] proposed PEDOT nanowires covered with polydopamine as electrode modifier for the detection of dopamine by cyclic voltammetry. The nanowires were produced by exploiting a silica template that was generated in situ on the Pt electrode.…”

Section: Polymersmentioning

confidence: 99%

Electrochemical Deposition of Nanomaterials for Electrochemical Sensing

Tonelli¹,

Scavetta²,

Gualandi³

2019

Sensors

156

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The most commonly used methods to electrodeposit nanomaterials on conductive supports or to obtain electrosynthesis nanomaterials are described. Au, layered double hydroxides (LDHs), metal oxides, and polymers are the classes of compounds taken into account. The electrochemical approach for the synthesis allows one to obtain nanostructures with well-defined morphologies, even without the use of a template, and of variable sizes simply by controlling the experimental synthesis conditions. In fact, parameters such as current density, applied potential (constant, pulsed or ramp) and duration of the synthesis play a key role in determining the shape and size of the resulting nanostructures. This review aims to describe the most recent applications in the field of electrochemical sensors of the considered nanomaterials and special attention is devoted to the analytical figures of merit of the devices.

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Optimization of dopamine determination based on nanowires PEDOT/polydopamine hybrid film modified electrode

Cited by 21 publications

References 27 publications

Vertically ordered silica mesochannel films: electrochemistry and analytical applications

Vertically ordered silica mesochannel films: electrochemistry and analytical applications

Enhancement of electrodes modified by electrodepositedPEDOT‐nanowires with dispersedPt nanoparticles for formic acid electro‐oxidation

Electrochemical Deposition of Nanomaterials for Electrochemical Sensing

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