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Hasseb, A. A., N. E. -din A. T. Ghani, O. R. Shehab, and R. M. El-Nashar, "Application of molecularly imprinted polymers for electrochemical detection of some important biomedical markers and pathogens", Current opinion in Electrochemistry, vol. 31, pp. 100848, 2022.
Metwally, M. G., O. R. Shehab, H. Ibrahim, and R. M. El-Nashar, "Electrochemical detection of Bisphenol A in plastic bottled drinking waters and soft drinks based on molecularly imprinted polymer", Journal of Environmental Chemical Engineering, vol. 10, pp. 107699, 2022.
Shehab, O. R., M. A. Dayiem, and A. F. A. Youssef, "Polymeric Sulphaquinoxaline Cd(II) Complex based Sensors for Cd(II) Determination in Real Samples", Journal of Analytical Chemistry, vol. 77, issue 6, pp. 771-782, 2022.
Mansour, A. M., K. Radacki, and O. R. Shehab, "Role of the ancillary ligand in determining the antimicrobial activity of Pd(II) complexes with N^N^N-tridentate coligand", Polyhedron, vol. 221, pp. 115857, 2022.
El-Rafie, S., H. Ibrahim, M. S. Shalaby, O. R. Shehab, and M. Gaber, "Fast phosphate adsorption on pectin-ammonium functionalized mesoporous silica hybrid material", Egyptian Journal of Chemistry, vol. 64, issue 2, pp. 581-591, 2021.
Mansour, A. M., K. Radacki, and O. R. Shehab, "Half-sandwich triazolato Rh(III) compound of pyridylbenzimidazole ligand with cell selective toxicity towards Cryptococcus neoformans", Journal of Organometallic Chemistry, vol. 949, pp. 121928, 2021.
Mansour, A. M., K. Radacki, and O. R. Shehab, "Role of the ancillary ligand in controlling the lysozyme affinity and electronic properties of terpyridine fac-Re(CO)3 complexes", Dalton TRansactions, vol. 50, pp. 1197-1201, 2021.
Mansour, A. M., and O. R. Shehab, "Spectroscopic and TDDFT studies of N-phenyl-N′-(3-triazolyl)thiourea) compounds with transition metal ions", Arabian Journal of Chemistry, vol. 14, issue 2, pp. 102932, 2021.
Mansour, A. M., K. Radacki, and O. R. Shehab, "Sulfonate improves water solubility and cell selective toxicity and alters the lysozyme binding activity of half sandwich Rh(III) complexes", Dalton TRansactions, vol. 50, pp. 10701-10706, 2021.
Mansour, A. M., O. R. Shehab, and K. Radacki, "Role of Sulfonate Appendage in the Protein Binding Affinity of Half-Sandwich Ruthenium(II)(η6-p-Cym) Complexes", European Journal of Inorganic Chemistry, vol. 3, pp. 299-307, 2020.
Shehab, O. R., F. A. Soliman, N. T. Abdel-Ghani, and A. M. Mansour, "Spectroscopic investigation of π-acceptors in the determination and photoinduced degradation of Sulfacetamide.", Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, vol. 228, pp. 117821, 2020. Abstract

The presence of expired and unused Sulfacetamide (SA) drug in water led to a global need for the development of effective advanced method for the quantitative analysis and for minimizing its occurrence in the nature. To find new effective photochemical decomposition method close to that obtained by the well-known Fenton reaction, the photodegradation of SA was investigated in presence of dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) and/or other common additives at two different wavelengths (365 and 256 nm). The role of DDQ in the degradation process of SA was evaluated in comparison to the other investigated π-acceptor systems (Chloranilic acid (CHL) and Picric acid (PA)). While the photodegradation process of SA was hardly to proceed in the absence of a catalyst and/or additive, addition of DDQ and NaNO to the solution of SA induced decomposition of about 94% of SA within 25 min upon the exposure to light source at 256 nm. On the other hand, SA was quantitatively analyzed by recording the absorbance of its charge transfer (CT) products with DDQ, CHL and PA at a certain wavelength. CHL is preferred with concentrated samples of SA, while PA is recommended for diluted samples of SA. SA → DDQ has a widely range of stability over the pH range of 4.5-12.0. While SA → CHL is stable only in the acidic medium (pH = 4.8-5.6), SA → PA is steady in the basic medium (pH = 7.5-11.0). The nature of the DDQ CT complex was investigated in the solid state. The electronic structures of the complexes were studied by calculating the time dependent density functional theory (TDDFT) spectra.

Youssef, A. F. A., M. A. Dayiem, and O. R. Shehab, "Use of Dicloxacillin Al(III) Complex as a Modifier for Determination of Al(III) Ion in Real Samples", Electrtoanalysis, vol. 32, pp. 2902-2912, 2020.
Issa, Y. M., H. U. S. S. E. I. N. M. ABDEL-FATTAH, O. R. Shehab, and N. B. Mohamed, "The use of optical and atomic force microscopy for probing the sensing mechanism of hazardous tellurium species for environmental applications", Journal of Molecular Structure, vol. 1203, pp. 127407, 2020.
Mansour, A. M., and O. R. Shehab, "Pyridylbenzimidazole‐Based Gold (III) Complexes: Lysozyme Metalation, DNA Binding Studies, and Biological Activity", European Journal of inorganic Chemistry, vol. 2019, pp. 2830, 2019.
Shehab, O. R., H. AlRabiah, H. A. Abdel-Aziz, and G. A. E. Mostafa, "Charge-transfer complexes of cefpodoxime proxetil with chloranilic acid and 2, 3-dichloro-5, 6-dicyano-1, 4-benzoquinone: Experimental and theoretical studies", Journal of Molecular Liquids, vol. 257, pp. 42-51, 2018.
Mansour, A. M., and O. R. Shehab, "Lysozyme and DNA binding affinity of Pd (ii) and Pt (ii) complexes bearing charged N, N-pyridylbenzimidazole bidentate ligands", Dalton Transactions, vol. 47, issue 10, pp. 3459-3468, 2018.
Mansour, A. M., and O. R. Shehab, "Reactivity of visible-light induced CO releasing thiourea-based Mn (I) tricarbonyl bromide (CORM-NS1) towards lysozyme", Inorganica Chimica Acta , vol. 480, pp. 159, 2018.
Mansour, A. M., and O. R. Shehab, "{Ru (CO) x}-core terpyridine complexes: Lysozyme binding affinity, DNA and photoinduced carbon monoxide releasing properties", Journal of Photochemistry and Photobiology A: Chemistry , vol. 364, pp. 406, 2018.
Ahmed M, M., and O. R. Shehab, "Photoactivatable CO‐Releasing Properties of {Ru (CO) 2}‐Core Pyridylbenzimidazole Complexes and Reactivity towards Lysozyme", European Journal of Inorganic Chemistry, vol. 37, pp. 4299-4310, 2017.
Mansour, A. M., F. A. Soliman, O. R. Shehab, and N. T. Abdel-Ghani, "Photodegradation of sulfadiazine catalyzed by p-benzoquinones and picric acid: application to charge transfer complexes", RSC Advances, vol. 7, issue 63, pp. 39989-39996, 2017.
Mansour, A. M., and O. R. Shehab, "Structural studies and quantum chemical calculations of Cr (III), Fe (III) and Ru (III) bromazepam complexes", Applied Organometallic Chemistry, vol. 31, issue 7, 2017.
Issa, Y. M., H. A. M. Fattah, O. R. Shehab, and N. B. Mohammed, "Tellurite Carbon Paste Sensors: Microscopic Analysis Provides New Insights on the Nature of the Interaction Between the Ionophore and Analytical Species", Electroanalysis, vol. 29, pp. 2541-2550, 2017.
Issa, Y. M., H. A. M. Fattah, O. R. Shehab, and N. A. B. Moniem, "Determination and Speciation of Tellurium Hazardous Species in Real and Environmental Samples", international Journal of Electrochemical Science, vol. 11, pp. 7475-7498, 2016.