Development and characterisation of a novel composite electrode material consisting of poly(3,4-ethylenedioxythiophene) including Au nanoparticles

Zanardi, Chiara; Terzi, Fabio; Pigani, Laura; Heras, Aránzazu; Colina, Álvaro; López-Palacios, Jesús; Seeber, Renato

doi:10.1016/j.electacta.2007.07.057

Cited by 51 publications

(38 citation statements)

References 42 publications

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“…On the other hand, the optical absorption spectrum of the PEDOT film exhibits a broad band centered at 525 nm. 42,43 We conclude that the transition located at 620 nm in the UV-Visible spectrum of (PVK-PEDOT) is a result of a p-p* transition due to the presence of the PEDOT moieties in our copolymer.…”

Section: Uv-visiblementioning

confidence: 93%

Density functional theory [B3LYP/6‐311G(d,p)] study of a new copolymer based on carbazole and (3,4‐Ethylenedioxythiophene) in their aromatic and polaronic states

Malki¹,

Bouzzine²,

Bejjit³

et al. 2011

J of Applied Polymer Sci

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ABSTRACT:We report a theoretical study of a new copolymer based on (Carbazole and Ethylenedioxythiophene) n (n ¼ 1-3) in their neutral and oxidized states, by using B3LYP/6-311G(d,p) calculations and thus deduce its optoelectronic properties. We discuss the influence of chain length of these properties. We also discuss the experimental UV-Visible spectrum for (PolyvinylcarbazolePoly(3,4-ethylenedioxythiophene)) (PVK-PEDOT) copolymer powder for comparison. Conformational analysis shows that there are no big changes in the structural parameters of the oligomers in their neutral form. After oxidation the oligomers become more planar and show a quinoidal character. The electronic states of monomers (Cbz-Edot) based Carbazole (Cbz) and Ethylenedioxythiophene (Edot), were elucidated by molecular orbital calculations using B3LYP/6-311G(d,p). The HOMO, LUMO, and gap energies E g were also deduced for the stable structure of the neutral, polaronic, and bipolaronic forms. Electronic transition energies and oscillator strengths of copolymers were obtained by the ZINDO, TD-DFT, and CIS methods. Band gaps of the corresponding polymers were obtained by extrapolating oligomer gaps to infinite chain lengths. These results will be compared with the experimental values obtained by optical spectrum. The optoelectronic properties of the (Cbz-Edot) 3 led us to suggest that this oligomer is a good model to reflect those of the parent polymer.

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Section: Uv-visiblementioning

confidence: 93%

Density functional theory [B3LYP/6‐311G(d,p)] study of a new copolymer based on carbazole and (3,4‐Ethylenedioxythiophene) in their aromatic and polaronic states

Malki¹,

Bouzzine²,

Bejjit³

et al. 2011

J of Applied Polymer Sci

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“…The formed electrode can be represented as Pt/PMT(240 or 360 nm)/M, M: Pt or Pd particles. EXD analysis was performed to investigate the ratio of the loaded Pd/Pt over the polymer film Chemical preparation of gold-incorporated PEDOT nanocomposite via reverse emulsion polymerization method [8] Spontaneous deposition of Au and Pt nanoparticles on polymers containing sulfur by the immersion of the polymer into the metal nanoparticle suspension (colloidal methods; citrate or borohydride reduction in the presence of citrate capping agent) [15,17] [ 8,9,15,17,20,21] Electrodeposition of polymer and metal nanoparticles simultaneously PEDOT including Au nanoparticles by constant current method on ITO glass in aqueous medium [26] [14, [24][25][26] Electrodeposition of metal nanoparticles on the spin-coated polymer [22] Electrochemical deposition of metal nanoparticles on the electropolymerized polymer Electrodeposited Au nanoparticles by bulk electrolysis BE method (at À400 mV for 400 S) over the electrochemically prepared PEDOT film by BE at 1400 mV for 30 S [27] Nano-Au/PPy ox composite by electrochemical polymerization of pyrrole by cycling the potential from À0.35 to 0.85 V for 3 cycles. Then, Au nanoclusters were electrochemically deposited on the PPy ox /GCE by cycling the potential between 0.2 and À1.0 V in HAuCl 4 solution for 15 cycles [18] corresponding to its value in the deposition solution and to confirm the immobilization of metal nanoparticles over the polymer matrix.…”

Section: Characterization Of Nanometallic Particles/polymer Compositementioning

confidence: 99%

Self-Assembled Monolayers on Nano-structured Composites for Electrochemical Sensing Applications

Atta¹,

El-Ads²,

Galal³

2015

Handbook of Nanoelectrochemistry

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Self-assembled monolayer (SAM) represents one of the methods to precisely modify surface structures in the nanoscale dimension. It has opened up a new era of exploration and has a profound impact on sensors and biosensors due to its unique properties. Different self-assemblies will be considered in this chapter: SAM of metallic nanoparticles on polymeric film, SAM of surfactant on polymeric film, and SAM of S-containing compounds on nanometallic films. The main goal of this chapter is to present comprehensive collection of the recent achievements in this area. Several issues will be discussed including the morphology, sensitivity, selectivity, stability, and electrochemical properties of the sensor.

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“…As an alternative to the inclusion of Au NPs during the electrogeneration of PEDOT [21,22], in this paper we apply and refine a procedure [23] to easily synthesise PEDOT/Au NP composite. Au NP encapsulated by citrate (Au citr ) are deposited onto PEDOT modified electrode by simply keeping the relevant colloidal solution in contact with the presynthesised organic electrode coating.…”

Section: Introductionmentioning

confidence: 99%

Composite PEDOT/Au Nanoparticles Modified Electrodes for Determination of Mercury at Trace Levels by Anodic Stripping Voltammetry

et al. 2010

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Electrode modifications consisting of poly(3,4-ethylenedioxythiophene) (PEDOT), including gold nanoparticles according to simple though innovative procedure, are developed. The resulting nanocomposite shows interesting performances as electrode material for determination of mercury by anodic stripping technique, even down to concentration levels as low as 0.46 ng/ml. The analytical performance is evaluated by optimized experimental parameters such as the charge spent during the potentiostatic electrodeposition of PEDOT, the preconcentration time, and the waveform parameters for the Differential Pulse Voltammetry (DPV) redissolution scan. No evidence of significant oxidative degradation of the polymer over repeated analysis cycles is evidence

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Development and characterisation of a novel composite electrode material consisting of poly(3,4-ethylenedioxythiophene) including Au nanoparticles

Cited by 51 publications

References 42 publications

Density functional theory [B3LYP/6‐311G(d,p)] study of a new copolymer based on carbazole and (3,4‐Ethylenedioxythiophene) in their aromatic and polaronic states

Density functional theory [B3LYP/6‐311G(d,p)] study of a new copolymer based on carbazole and (3,4‐Ethylenedioxythiophene) in their aromatic and polaronic states

Self-Assembled Monolayers on Nano-structured Composites for Electrochemical Sensing Applications

Composite PEDOT/Au Nanoparticles Modified Electrodes for Determination of Mercury at Trace Levels by Anodic Stripping Voltammetry

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