Anodic and cathodic deposition of polyaniline films: a comparison between the two methods

Abdul-Manaf, N. A.; Yusoff, W Y W; Demon, Siti Zulaikha Ngah; Shaari, Nur Atikah; Shamshuddin, A; Mohamed, N. S.

doi:10.1088/2053-1591/ab0259

Cited by 5 publications

(9 citation statements)

References 22 publications

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“…As shown in Figure 2a, the images (1), (2), and (3) represent PANI-ES (light greenish), PANI-EB (bluish), and PANI-ES/PANI-EB (partial bluish and greenish). The appearance of the PANI thin films with different colors depending on the oxidation states is also shown by Abdul-Manaf et al 38 In the PANI-ES thin film (Figure 2b), agglomeration and stretching of PANI chains resulted in a "broccoli-shaped" structure. This agglomerated structure of PANI-ES would provide an excellent electrostatic charge capability because closely bonded chains would facilitate an easy charge delocalization throughout the surface.…”

Section: Resultssupporting

confidence: 74%

“…A diffraction angle of 44.4°arises in both PANI-EB and composite films, which could be originated by the quinoid rings. 38 The optical reflectance spectra of the PANI thin films obtained from UV−visible spectroscopy are shown in Figure 5c. The reflectance spectra of PANI-EB and bilayer PANI-ES/ PANI-EB are blue-shifted compared to PANI-ES, at the maximum characteristic band reflectance of 408 and 470 and 477 nm, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…A relatively broad peak for PANI-ES and PANI-EB at 25.6° with an interplanar spacing of 3.44 Å suggests a regular arrangement of perpendicular and parallel PANI segments. , It is noted that the planes at 44.4° (4 2 0) in PANI-EB and at 43.3° (0 2 4) in the composite film indicate a plane orientation. A diffraction angle of 44.4° arises in both PANI-EB and composite films, which could be originated by the quinoid rings …”

Section: Resultsmentioning

confidence: 99%

“…The thin film prepared by PLD method has shown higher electrical conductivity compared to others. Recently, Abdul-Manaf et al 38 have prepared PANI thin films using electrodeposition process. In this work, PANI thin films via anodic deposition showed a fully oxidized (an amorphous surface) material with a wide band gap (3.90−4.08 eV), while the cathodic deposition showed a complete reduction with a narrow band gap (1.05−1.20 eV).…”

Section: Introductionmentioning

confidence: 99%

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Heterostructured Layer Growth of Polyaniline by Vacuum Thermal Evaporation and Fabrication of Thin-Film Capacitors

2019

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Thin films of conducting polymers find applications in many emerging areas, such as packaging, sensing, coating, thin-film capacitors, organic integrated circuits, organic thin wires, and electroluminescent devices. The success of thin-film-based devices relies on precisely controlled thickness (∼100 nm) and surface characteristics. Tailored-made properties can be harnessed by preparing thin films by multiple coatings (namely, layer-by-layer deposition), which results in heterogeneity within the film required for special applications. In spite of excellent electrical conductivity of Polyaniline (PANI), the fabrication of thin-film-based devices is restricted because of its brittleness. Herein, we report the preparation of bilayer thin films of PANI along with the individual thin films of PANI-emeraldine salt (ES) and PANIemeraldine base (EB) using the vacuum thermal evaporation method. Detailed structural and morphological analysis shows the formation of well-organized PANI thin films with a roughness of ≈ 10 nm and the thickness ranging from 50 to 100 nm. PANI-ES shows the highest electrical, dielectric, and electrostatic charge properties, which is attributed to the crystalline structure as revealed by X-ray diffraction analysis. All the thin films show semiconducting behavior as revealed by the band gap analysis (1.7−2.2 eV). The optical constants of the bilayer film measured from spectroscopic ellipsometry show a marginal deviation from the individual films, which is attributed to the interfacial interaction between the layers of PANI-ES and PANI-EB. Thinfilm capacitors based on PANI-ES show the highest current and energy density compared to those based on PANI-EB and bilayer films.

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Section: Resultssupporting

confidence: 74%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Heterostructured Layer Growth of Polyaniline by Vacuum Thermal Evaporation and Fabrication of Thin-Film Capacitors

2019

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“…Aniline is a kind of monomer that is easy to polymerize. Polyaniline is an important conductive polymer [21,22,23] that can be used as anode or cathode material with electrocatalytic function due to its excellent electrical and electrochemical properties [24]. The combination of polyaniline and nano-TiO 2 can not only effectively inhibit the agglomeration of TiO 2 nanoparticles, but also improve the physical and chemical properties of composites, and may be widely applied in the electrochemical catalysis field [20,25,26].…”

Section: Introductionmentioning

confidence: 99%

The Electrochemical Oxidation of Hydroquinone and Catechol through a Novel Poly-geminal Dicationic Ionic Liquid (PGDIL)–TiO2 Composite Film Electrode

Guo

Xie

et al. 2019

Polymers

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A novel poly-geminal dicationic ionic liquid (PGDIL)-TiO2/Au composite film electrode was successfully prepared by electrochemical polymerization of 1,4-bis(3-(m-aminobenzyl)imidazol-1-yl)butane bis(hexafluorinephosphate) containing polymerizable anilino groups in the electrolyte containing nano-TiO2. The basic properties of PGDIL–TiO2/Au composite films were studied by SEM, cyclic voltammetry, electrochemical impedance spectroscopy, and differential pulse voltammetry. The SEM results revealed that the PGDIL–TiO2 powder has a more uniform and smaller particle size than the PGDIL. The cyclic voltammetry results showed that the catalytic effect on electrochemical oxidation of hydroquinone and catechol of the PGDIL–TiO2 electrode is the best, yet the Rct of PGDIL–TiO2 electrode is higher than that of PGDIL and TiO2 electrode, which is caused by the synergistic effect between TiO2 and PGDIL. The PGDIL–TiO2/Au composite electrode presents a good enhancement effect on the reversible electrochemical oxidation of hydroquinone and catechol, and differential pulse voltammetry tests of the hydroquinone and catechol in a certain concentration range revealed that the PGDIL–TiO2/Au electrode enables a high sensitivity to the differentiation and detection of hydroquinone and catechol. Furthermore, the electrochemical catalytic mechanism of the PGDIL–TiO2/Au electrode was studied. It was found that the recombination of TiO2 improved the reversibility and activity of the PGDIL–TiO2/Au electrode for the electrocatalytic reaction of HQ and CC. The PGDIL–TiO2/Au electrode is also expected to be used for catalytic oxidation and detection of other organic pollutants containing –OH groups.

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Preparation and characterization of a novel poly-geminal dicationic ionic liquid (PGDIL)

Guo

Xie

et al. 2019

Journal of Molecular Liquids

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Anodic and cathodic deposition of polyaniline films: a comparison between the two methods

Cited by 5 publications

References 22 publications

Heterostructured Layer Growth of Polyaniline by Vacuum Thermal Evaporation and Fabrication of Thin-Film Capacitors

Heterostructured Layer Growth of Polyaniline by Vacuum Thermal Evaporation and Fabrication of Thin-Film Capacitors

The Electrochemical Oxidation of Hydroquinone and Catechol through a Novel Poly-geminal Dicationic Ionic Liquid (PGDIL)–TiO2 Composite Film Electrode

Preparation and characterization of a novel poly-geminal dicationic ionic liquid (PGDIL)

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