Design, fabrication and optical characterizations of pyrimidine fused quinolone carboxylate moiety for photodiode applications

Elkanzi, Nadia A. A.; Farag, A.A.M.; Roushdy, N.; Mansour, A. M.

doi:10.1016/j.ijleo.2020.164882

Cited by 40 publications

(10 citation statements)

References 51 publications

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“…This flux will change in three cases, case of a coil motion through a non-uniform field, case of a coil in a varying field, or a case of a uniform field with a rotating coil in it. Commonly, a high permeability ferromagnetic piece [13,14,41] is placed inside the coil to collect the encircling fields and enhance the flux density [42,43]. The core material permeability, the coil area, the turns number, and the magnetic flux change rate through the coil are the main factors that affect the magnetic field detection process by using a search-coil magnetometer [44].…”

Section: Search-coil Magnetometermentioning

confidence: 99%

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Magnetic sensors and geometrical magnetoresistance: A review

Mansour

2020

J Met Mater Miner

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Magnetic sensing devices are of the extremely significant kind of detectors, that are used several important and useful applications. Geometrical extraordinary magnetoresistance (EMR) is the geometrical kind of magnetoresistance associated with the non-magnetic semiconductor-metal hybrid structure and influenced by geometrical shape. As a result of Lorentz force, the current path change from metal (in absence of magnetic field) to semiconductor (under the subjection of the magnetic field) in semiconductor-metal hybrid structure is the key of EMR phenomena, i.e. once the metal is placed in a semiconductor, it works as a short circuit with the majority of applied current moving through metallic inhomogeneity and the almost whole resistance of semiconductor-metal hybrid structure drops to value smaller than that of homogeneous semiconductor in absence of magnetic field, in other hands, applying of magnetic field alters the current route to be around the metallic inhomogeneity where it works as an open circuit and the whole resistance turns into a quite high magnitude relies on the geometrical form of a device. The variables govern these phenomena are metal and semiconductor conductivity, semiconductor charge carriers mobility, and device geometry. Within this review, EMR phenomena history, variables governed it, materials, and applications of EMR devices are overviewed.

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Section: Search-coil Magnetometermentioning

confidence: 99%

“…A sensor is a tool usually senses and replies to variations of an event located in surrounds. An event could be a magnetic field, light, pressure, motion, heat, moisture, or any other external events [13,14].…”

Section: Introductionmentioning

confidence: 99%

Magnetic sensors and geometrical magnetoresistance: A review

Mansour

2020

J Met Mater Miner

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“…As stated by the Fresnel formula, the refractive index, n, is inspected by employing the reflectance and absorption index as follows: 5,42…”

Section: Resultsmentioning

confidence: 99%

Effect of Calcination Temperature on the Optical and Magnetic Properties of NiFe₂O₄- KFeO₂ Nanocomposite Films Synthesized via WOSW Sol-Gel Route for Opto-Magnetic Applications

Mansour

Cao

Nahrawy

2021

ECS J. Solid State Sci. Technol.

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NiFe2O4- KFeO2 nanocomposite thin films on glass and silicon substrates was synthesized via a without surfactant and water (WOSW) sol-gel route, calcined at 300 °C, 400 °C, and 600 °C. The structural, optical, and magnetic properties of the films were characterized. The obtained X-ray diffraction (XRD) results indicate the crystallite size dependence on the calcination temperature. Scanning electron microscopy revealed that the nanomagnetic particles were regularly grown and spherical in shape. The particle nano size and surface area increased with an increase in the calcination of NiFe2O4- KFeO2 nanocomposite magnetic films. The formation of the spinel structure of the film was strengthened using Fourier transform infrared and XRD results. The optical parameters of the nanomagnetic films were calculated from the measured transmittance and reflectance. The variation of calculated parameters with the variation of wavelength or the energy was discussed. The effect of calcination temperature on the optical parameters was also studied. The saturation magnetization increased from 15.2 to 32.31 emu g−1 as the sintering temperature changes from 300 °C to 600 °C.

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“…[44] Similarly, pyrimidines containing donor-π-acceptor groups have shown significant power conversion efficiency and thus, they have potential in the field of organic photodiodes and dye sensitized solar cells. [45,46] By considering the biological and photophysical properties of porphyrin and pyrimidine scaffolds, we envisioned the construction of new periphery modified porphyrins decorated with a pyrimidine moiety. To achieve our goal, novel porphyrin building blocks, 2-aroylamino-3-formylporphyrins were initially synthesized from easily accessible meso-tetraarylporphyrins via a series of reactions.…”

Section: Introductionmentioning

confidence: 99%

“…Apart from biological significance, pyrimidines with extended π‐systems demonstrated remarkable optical behavior [44] . Similarly, pyrimidines containing donor‐π‐acceptor groups have shown significant power conversion efficiency and thus, they have potential in the field of organic photodiodes and dye sensitized solar cells [45,46] . By considering the biological and photophysical properties of porphyrin and pyrimidine scaffolds, we envisioned the construction of new periphery modified porphyrins decorated with a pyrimidine moiety.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of 2‐Arylpyrimido[4,5‐b]porphyrins via Cyclization Reaction with Ammonia

Singh

Nath

2022

Eur J Org Chem

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A facile synthetic strategy for the synthesis of a new series of β,β’‐fused 2‐arylpyrimido[4,5‐b]porphyrins has been developed by using condensation cyclization reaction with ammonia. 2‐Aroylamino‐3‐formylporphyrins were synthesized from 2‐aroylaminoporphyrins under Vilsmeier–Haack reaction conditions, which were then efficiently converted to the corresponding 2‐arylpyrimido[4,5‐b]‐5,10,15,20‐tetrakis(4‐chlorophenyl)‐porphyrins via a condensation cyclization reaction. The nickel(II), copper(II), free‐base and zinc(II) analogues of 2‐arylpyrimido[4,5‐b]porphyrins were successfully synthesized in 65–72 % yields and structurally characterized on the basis of spectral data analysis. On photophysical evaluation, 2‐arylpyrimido[4,5‐b]porphyrins demonstrated a 12–19 nm bathochromic shift in their electronic absorption spectra and up to 10 nm red shift in their emission spectra as compared to the simple meso‐(tetrakis(4‐chlorophenyl))porphyrins due to the extended π‐conjugation.

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Design, fabrication and optical characterizations of pyrimidine fused quinolone carboxylate moiety for photodiode applications

Cited by 40 publications

References 51 publications

Magnetic sensors and geometrical magnetoresistance: A review

Magnetic sensors and geometrical magnetoresistance: A review

Effect of Calcination Temperature on the Optical and Magnetic Properties of NiFe₂O₄- KFeO₂ Nanocomposite Films Synthesized via WOSW Sol-Gel Route for Opto-Magnetic Applications

Synthesis of 2‐Arylpyrimido[4,5‐b]porphyrins via Cyclization Reaction with Ammonia

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Design, fabrication and optical characterizations of pyrimidine fused quinolone carboxylate moiety for photodiode applications

Cited by 40 publications

References 51 publications

Magnetic sensors and geometrical magnetoresistance: A review

Magnetic sensors and geometrical magnetoresistance: A review

Effect of Calcination Temperature on the Optical and Magnetic Properties of NiFe2O4- KFeO2 Nanocomposite Films Synthesized via WOSW Sol-Gel Route for Opto-Magnetic Applications

Synthesis of 2‐Arylpyrimido[4,5‐b]porphyrins via Cyclization Reaction with Ammonia

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Effect of Calcination Temperature on the Optical and Magnetic Properties of NiFe₂O₄- KFeO₂ Nanocomposite Films Synthesized via WOSW Sol-Gel Route for Opto-Magnetic Applications