Optical and electrical transport properties of polyaniline–silver nanocomposite

Gupta, K.; Jana, Paresh Chandra; Meikap, Ajit Kumar

doi:10.1016/j.synthmet.2010.05.026

Cited by 214 publications

(116 citation statements)

References 60 publications

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“…This figure shows the Egfor silver polyanilinenano composite thin films deposited on a glass substrate at silver aniline weight concentration (10%, 8%, 6% and 4%) at room temperature. Increasing the percentage of the weight of the silver in the nanocomposite thin films lead to decreases the optical energy gap from 2.68 eV for 4% silver concentration to 2.35 eV for 10% concentration, where energy band gap for a pure polyaniline prepared by plasma polymerization was 2.7eV.The optical band gap values were falling within the semiconductor region of Eg (K. Gupta et al, 2010).The reduction in the optical band gap is probably due to the modification of the polymer structure. Improvement of conductivity of silver polyanilinenano composite will also be because the silver is a good conductor.…”

Section: B -Optical Energy Bandgapmentioning

confidence: 91%

Characteristic of Silver\ Polyaniline Nanocomposite Thin Films Prepared by Aerosol Assisted Dielectric Barrier Discharge Plasma Jet Polymerization

Humud

Abass²,

Wheeb³

2014

Asian Journal of Applied Science and Engineering

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Silver polyanilinenano composite thin films deposited on glass substrates by in-situ aerosol assisted plasma polymerization at atmospheric pressure and room temperature, from aniline monomer in the presence of different concentrations of Ag nanoparticles. The silver nanoparticle with 50nm average particles size was prepared in our laboratory by electrical exploding weir method. Metal polymer nanocomposite thin films were characterized by UV-VIS, XRD, FTIR, AFM and SEM the optical studies show that the energy band gap will be different according to the silver polyaniline concentration. The XRD pattern indicates that the synthesized Ag-polyaniline nanocomposite is amorphous. FTIR reveals the presence of silver nanoparticle embedded into polyaniline.AFM and SEM surface images show that the silver nanoparticle impeded homogenously inside the polyaniline matrices. It can be concluded that it can be preparedAg\ polyanilinenano composite thin films by aerosol assisted dielectric barrier discharge DBD plasma jet polymerization and control the optical energy band gap irregulars by controlling the experiment variables.

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Section: B -Optical Energy Bandgapmentioning

confidence: 91%

Characteristic of Silver\ Polyaniline Nanocomposite Thin Films Prepared by Aerosol Assisted Dielectric Barrier Discharge Plasma Jet Polymerization

Humud

Abass²,

Wheeb³

2014

Asian Journal of Applied Science and Engineering

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“…Infrared spectroscopy methods are used for, e.g., qualitative and quantitative analysis and examination of the homogeneity of the analysed material (Table 1 and Fig. 5) [42][43], and primarily for assessing potential molecular interactions in analysed material. Infrared spectroscopy measurements provide information about the purity of analysed formulations, and partial but useful information about the mode of surface adsorption of investigated nanoparticles.…”

Section: Spectroscopic Study: Ftir Infrared Spectroscopymentioning

confidence: 99%

Microscopic and Spectroscopic Analyses of Selected Agricultural Formulations Containing Various nanostructures

Kachel‐Jakubowska¹,

Strubińska²,

Matwijczuk³

et al. 2017

Pol. J. Environ. Stud.

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The aim of the present study was to analyse commercially available compounds containing nanoparticles in the form of Ag, Cu, and Ag sulphate colloids applied in agriculture. The compounds were analysed with TEM and FTIR spectroscopy, i.e., methods that can complement the commonly used research techniques such as EDX or Raman spectroscopy. The results of the microscopic examinations evidenced the presence of single spherical agglomerates (small granules) of the nanoparticle-containing products. Infrared spectroscopy revealed the presence of bands characteristic of vibrations that can be assigned to nanoparticle-X interactions, where X = S, C, or O in aqueous colloid solutions of the analysed samples. Additionally, bands characteristic for C-H stretching vibrations (probably associated with vibrations of the -CH 2 and -CH 3 groups) were observed as bands originating from compounds used as the carriers of the analysed systems. In the case of Ag sulphate, the most distinct band with a maximum at 2,863 cm -1 , which is characteristic of SH···Ag vibrations, can be observed, and its intensity may be associated with the nanostructure composition of the formulation, which is more diverse than that in the other two compounds.

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“…Considering the Tauc's relation in Equation (1) above, the band gap of the thin films were obtained by plotting graphs of αhν 2 versus hν and extrapolating the straight portion of the graph on hυ axis at αhυ= 0 [10,11]. The values of the optical band gap obtained for pure PANI, citric acid-doped PANI and H2SO4-doped PANI were 2.75, 2.70 and 2.40 eV respectively.…”

Section: Optical Band Gapmentioning

confidence: 99%

Synthesis and optical characterization of acid-doped polyaniline thin films

Paul-Nwokocha¹,

Ozuomba²

2018

Nig. J. Tech.

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Polyaniline has attracted much interest among researchers because of its reasonably good conductivity, stability, ease of preparation, affordability and redox properties compared to other organic compounds. In this work, Polyaniline (PANI) thin films were synthesized by chemical oxidative polymerization of aniline in the presence of Hydrochloric acid using Ammonium peroxydisulfate as an oxidizing agent. The synthesised PANI thin films, doped with Tetraoxosulphate VI acid (H2SO4) and Citric acid, were characterised using UV-Vis spectroscopy to investigate the variations in the optical properties. The thin films were found to be of the same thickness (0.2µm) and their absorption spectra revealed two absorption peaks at around 300nm and 650nm for the pure PANI and the sample doped with Citric acid while that doped with H2SO4 had its peaks at 300 nm and 880nm. Doping reduced the direct band gap of the PANI from 2.75eV to 2.4eV.

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Optical and electrical transport properties of polyaniline–silver nanocomposite

Cited by 214 publications

References 60 publications

Characteristic of Silver\ Polyaniline Nanocomposite Thin Films Prepared by Aerosol Assisted Dielectric Barrier Discharge Plasma Jet Polymerization

Characteristic of Silver\ Polyaniline Nanocomposite Thin Films Prepared by Aerosol Assisted Dielectric Barrier Discharge Plasma Jet Polymerization

Microscopic and Spectroscopic Analyses of Selected Agricultural Formulations Containing Various nanostructures

Synthesis and optical characterization of acid-doped polyaniline thin films

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