Attempt to tune the dielectric and optical properties in PVA/ZnO composite using tetra ethylene glycol dimethyl ether for light emitting devices

Elkalashy, O.; Sheha, E.

doi:10.1007/s00339-018-1970-1

Cited by 18 publications

(8 citation statements)

References 45 publications

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“…PVA forms highly transparent films from aqueous solutions and can prevent nanoparticles aggregation owing to hydrogen bonding interactions. Therefore, it has attracted considerable interest as a matrix for transparent nanocomposites useful in optical and optoelectronic applications [3,4]. In this paper, we present a novel dichroic optical polarizer made of PVAbased nanocomposite film.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and optical properties of dichroic polarizing films based on poly(vinyl alcohol)-heteropolyacid nanocomposites

Третинников

Sushko

2019

Appl. Phys. A

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We report on a new type of poly(vinyl alcohol)(PVA)-based dichroic polarizing films whose visible dichroism is due to long-chain linear polyenes, -(CH=CH) n -, formed in the course of acid-catalyzed thermal dehydration of the polymer. The distinguishing feature of these films is that the solid acid catalyst (12-tungstophosphoric acid, TPA) is used instead of the liquid ones. Thin PVA films with embedded TPA nanoparticles were fabricated by solution casting technique. Subsequent stretching and annealing of these PVA/TPA nanocomposites produced PVA-polyene/TPA dichroic polarizing films with the thickness below 10 µm. Transmission electron microscopy, Fourier-transform infrared spectroscopy, and UV-Vis spectroscopy techniques were used to characterize the films at various stages of preparation. The fabricated polarizing films showed polarization efficiency exceeding 94% and transmittance higher than 40% in the visible range. The polarizing properties of the films did not deteriorate upon prolonged exposures to hot humid air (60 °C, 90% RH) and high temperature (90 °C). The nanocomposite polarizing film proposed in this study may have application potential in thin and flexible optoelectronic devices that must operate under harsh environmental conditions.

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Section: Introductionmentioning

confidence: 99%

Fabrication and optical properties of dichroic polarizing films based on poly(vinyl alcohol)-heteropolyacid nanocomposites

Третинников

Sushko

2019

Appl. Phys. A

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“…The feature of σ ac for Gd(III) complex‐PVA films, obeys a power law of σ ac = Bω s, 62,63 where B is constant and s is a parameter that gives the value of frequency exponent 0 ≤ s ≤ 1 63 . The power frequency exponent was acquired from the slope of ln σ ac vs. ln ω plotted at different temperatures 64 . The temperature‐dependent of frequency exponent, s is shown in Figure 10 in frequency ranges (10 2 –10 3 Hz) and (> 5 × 10 3 Hz), respectively.…”

Section: Resultsmentioning

confidence: 99%

“…63 The power frequency exponent was acquired from the slope of ln σ ac vs. ln ω plotted at different temperatures. 64 The temperature-dependent of frequency exponent, s is shown in Figure 10 (s) is given by s…”

Section: Ac Electrical Conductivity Featuresmentioning

confidence: 99%

Dual function of new Nd(III) and Gd(III) complexes for cytotoxic and optoelectronic fields: Synthesis, characterization, DFT calculations, and PVA composite films

Ali

Saleh

Ali

et al. 2023

Applied Organom Chemis

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New two lanthanide complexes of Neodymium (III) and Gadolinium (III) ions were prepared based on 2‐Cyano‐N′‐([4‐oxo‐4H‐chromen‐3‐yl]methylene) acetohydrazide as a chelating agent. The prepared Nd(III) and Gd(III) complexes were characterized via elemental analysis, molecular conductance, IR, and TGA. The obtained results showed the chelating agent behaves as tridentate via oxygen of γ pyrone and carbonyl groups and nitrogen of the azomethine group. The antitumor activity of isolated complexes was investigated against the Ehrlich Ascites Carcinoma cell line (E.A.C). The results of antitumor activity cleared that Gd(III) complex has higher activity than Nd(III) complex and moderate activity relative to cisplatin and 5‐Furacil. Besides, DFT calculations were estimated for prepared Nd(III) and Gd(III) complexes by the Gaussian program. Theoretical parameters were calculated. The energy gap values confirmed the higher activity of the Gd(III) complex over the other Nd(III) complex. In addition, the composite films of Nd(III) and Gd(III) complexes were prepared using the cast technique. The electrical and optical absorption properties of these polymer composites were analyzed.

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“…25 The introduction of DMSO within the framework of HFE 0 perturbed the bonding scheme of HFE 0 , causing reduction in the intensity of the peaks and small redshis, which conrm the complexation between DMSO and HFE. [27][28][29][30][31][32] UVspectroscopy is an effective method for investigating changes in electronic energy levels inside a molecule produced by electron transfer from por non-bonding orbitals. Fig.…”

Section: Resultsmentioning

confidence: 99%

Dimethyl sulfoxide as a function additive on halogen-free electrolyte for magnesium battery application

2023

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Attempt to tune the dielectric and optical properties in PVA/ZnO composite using tetra ethylene glycol dimethyl ether for light emitting devices

Cited by 18 publications

References 45 publications

Fabrication and optical properties of dichroic polarizing films based on poly(vinyl alcohol)-heteropolyacid nanocomposites

Fabrication and optical properties of dichroic polarizing films based on poly(vinyl alcohol)-heteropolyacid nanocomposites

Dual function of new Nd(III) and Gd(III) complexes for cytotoxic and optoelectronic fields: Synthesis, characterization, DFT calculations, and PVA composite films

Dimethyl sulfoxide as a function additive on halogen-free electrolyte for magnesium battery application

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