Results 61 to 70 of about 2,292 (253)
Synthesis of new derivatives of the 1H-1,2,3-triazole ring using 1-aryl-5-phenyl-1H-1,2,3-triazole-4-carbohydrazides as precursors [PDF]
, 2023 Condensation of 1-(4-nitrophenyl)-5-phenyl-1H-1,2,3-triazole-4-carbohydrazide and phenyl isothiocyanate in ethanol in the presence of a catalytic quantity of triethylamine under reflux gave 5-(1-(4-nitrophenyl)-5-phenyl-1H-1,2,3-triazol-4-yl)-N-phenyl-1 ...
Abdel-Wahab, Bakr F. +4 more
core +1 more source
Molecules, 2011 A novel series of 7,7-diphenyl-1,2-dihydroimidazo[2,1-c][1,2,4]triazin-6(7H)-one 6a–h, were easily prepared via reactions of novel 2-hydrazinyl-4,4-diphenyl-1H-imidazol-5(4H)-one (2) with hydrazonoyl halides 3a–h.
Huwaida M.E. Hassaneen +1 more
doaj +1 more source
Asymptotic analysis of subwavelength halide perovskite resonators [PDF]
arXiv, 2022 Halide perovskites are promising materials with many significant applications in photovoltaics and optoelectronics. In this paper, we use integral methods to quantify the resonant properties of halide perovskite nano-particles. We prove that, for arbitrarily small particles, the subwavelength resonant frequencies can be expressed in terms of the ...
arxiv
Effect of disorder on transport properties in a tight-binding model for lead halide perovskites [PDF]
Sci. Rep. 7, 8902 (2017), 2017 The hybrid organic-inorganic lead halide perovskite materials have emerged as remarkable materials for photovoltaic applications. Their strengths include good electric transport properties in spite of the disorder inherent in them. Motivated by this observation, we analyze the effects of disorder on the energy eigenstates of a tight-binding model of ...
arxiv +1 more source
Novel Antimicrobial Agents: Fluorinated 2‐(3‐(Benzofuran‐2‐yl) pyrazol‐1‐yl)thiazoles
International Journal of Medicinal Chemistry, Volume 2013, Issue 1, 2013., 2013 A new series of 2‐pyrazolin‐1‐ylthiazoles 8a–d and 13–16 was synthesized by cyclization of N‐thiocarboxamide‐2‐pyrazoline with different haloketones and 2,3‐dichloroquinoxaline. The structures of the new compounds were confirmed by elemental analyses as well as NMR, IR, and mass spectral data.
Hanan A. Mohamed +4 more
wiley +1 more source
Synthesis and tautomerism of aryl- and hetaryl-azo derivatives of bi- and tri-heterocycles
Journal of Advanced Research, 2010 This review summarizes results from the literature concerning synthesis and azo-hydrazone tautomerism of arylazo- and hetarylazo-derivatives of various bi- and tri-heterocycles reported by us and other research groups from 1981 to mid 2009.
Ahmad S. Shawali
doaj +1 more source
Quantum Efficiency Enhancement of Lead-Halide Perovskite Nanocrystal LEDs by Organic Lithium Salt Treatment [PDF]
arXiv, 2022 Surface-defect passivation is key to achieving high photoluminescence quantum yield in lead halide perovskite nanocrystals. However, in perovskite light-emitting diodes these surface ligands also have to enable balanced charge injection into the nanocrystals to yield high efficiency and operational lifetime.
arxiv
Highly ordered lead-free double perovskite halides by design [PDF]
, 2020 Lead-free double perovskite halides are emerging optoelectronic materials that are alternatives to lead-based perovskite halides. Recently, single-crystalline double perovskite halides were synthesized, and their intriguing functional properties were demonstrated.
arxiv +1 more source
Photo-physics of Hybrid Metal Halide Perovskite Semiconductor Thin Films: Application in Photovoltaic [PDF]
arXiv, 2023 This thesis demonstrates the photo-physics of hybrid metal halide perovskite semiconductor thin films and its application to solar cells.
arxiv
, 2013 A new enamino ester, (E)-ethyl 3-(dipropylamino)acrylate, was prepared and used for synthesis of various pyrazole derivatives, 4a-k and 5a-d. Other new enaminone, (E)-ethyl 3-(3-(dimethylamino)acryloyl)-1-(4-nitrophenyl)-1H-pyrazole-4-carboxylate (8 ...
Hassaneen, Hamdi Mahmoud +1 more
core +1 more source