Tuning the optical and photophysical characteristics of DR1 through mixing with JGB

Ghazy, Ahmed R.; Abdel Gawad, S.A.; Ashraf, Alaa; Ahmed, Samia; Ghazy, R.; EL‑Sharkawy, A.N.

doi:10.1016/j.saa.2024.125238

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

2025

DOI: 10.1016/j.saa.2024.125238

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Tuning the optical and photophysical characteristics of DR1 through mixing with JGB

Ahmed R. Ghazy,

S.A. Abdel Gawad,

Alaa Ashraf

et al.

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2025

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Cited by 2 publications

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Synthesis, structural, optical and dielectric characterizations of Mn1-xCuxFe2O4 for dye removal in alkaline conditions

Ghazy,

Mahmoud,

Bishr

et al. 2025

Journal of Molecular Liquids

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Synthesis, structural, optical and dielectric characterizations of Mn1-xCuxFe2O4 for dye removal in alkaline conditions

Ghazy,

Mahmoud,

Bishr

et al. 2025

Journal of Molecular Liquids

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Impact of molecular configuration on the photoluminescence and electrical characteristics of poly-pyrrol-thiazol-imine polymers films

Ghazy,

Kenawy,

Darwesh

et al. 2024

Sci Rep

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The optical, photoluminescence, and electrical properties of Poly(Z)-PTI and Poly(E)-PTI, two Poly-Pyrrol-Thiazol-Imine polymers with comparable chemical structures but distinct configurations, were examined. Using the dip-casting method, polymer films were deposited on ITO substrates. UV-VIS spectroscopy revealed that both polymers diverged between 500 and 800 nm, showing the impact of molecular arrangement, but showed similar absorption behavior for wavelengths shorter than 500 nm. For Poly(Z)-PTI, the direct optical energy gaps were 2.06 eV, while for Poly(E)-PTI, they were 1.78 eV. Poly(Z)-PTI displayed an emission peak at 610 nm (red) according to laser photoluminescence spectra, while Poly(E)-PTI peaked at 563 nm (green-yellow). The capacitance behavior was revealed by electrochemical impedance spectroscopy. Nyquist plots suggested an equivalent circuit model of Rs (CRct)(QR)(CR) for both polymers, and the relaxation times were 15.9 ns for Poly(Z)-PTI and 89.5 ns for Poly(E)-PTI. The Mott-Schottky analysis verified the n-type conductivity, revealing 2.18 × 1016 cm− 3 carrier densities for Poly(Z)-PTI and 1.78 × 1016 cm− 3 for Poly(E)-PTI. At lower frequencies, both polymers exhibited limited conductivity and large dielectric constants. Insights into the possible uses of Poly-Pyrrol-Thiazol-Imine polymers in electrical and optoelectronic devices are provided by this study, which emphasizes the influence of molecular configuration on these polymers’ characteristics.

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Tuning the optical and photophysical characteristics of DR1 through mixing with JGB

Cited by 2 publications

References 47 publications

Synthesis, structural, optical and dielectric characterizations of Mn1-xCuxFe2O4 for dye removal in alkaline conditions

Synthesis, structural, optical and dielectric characterizations of Mn1-xCuxFe2O4 for dye removal in alkaline conditions

Impact of molecular configuration on the photoluminescence and electrical characteristics of poly-pyrrol-thiazol-imine polymers films

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