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Your search keyword '"Abdullmajed, Hasanain A."' showing total 2 results
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2 results on '"Abdullmajed, Hasanain A."'

1. Preparation and spectroanalytical studies of two new azo compounds derived from the drug methyl-4-amino benzoate.

Author

Abdullmajed, Hasanain A., Ali, Asaad A., and AL-Asadi, Rafid H.

Subjects
*AZO compounds, *IONIZATION constants, *MASS spectrometry, *PROTONATION constants, *ELECTRONIC spectra, *VISIBLE spectra
Abstract

Two new azo compounds were prepared from the drug methyl-4-amino benzoate with pyridoxine hydrochloride (B6) (A1) and with ventolin (salbutamol sulphate) (A2). The characterization of azo compounds have been described by I.R., mass spectra and visible spectroscopic techniques. At various pH values (2-12) , the electronic spectra of these azo compounds were investigated in terms of acid-base properties ,which includes establishing isobestic points and determination of protonation and ionization constants. The effect of solvents of different polarities on the electronic spectra was the subject of the other research. The azo compound (A2) has been used in a variety of applications for nitrite determination. [ABSTRACT FROM AUTHOR]

Published
2023
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2. A novel azo compound derived from ethyl-4-amino benzoate: synthesis, nonlinear optical properties and DFT investigations.

Author

Hassan, Qusay M. A., Al-Asadi, Rafid H., Sultan, H. A., Abdullmajed, Hasanain A., Ali, Asaad A., and Emshary, C. A.

Subjects
*AZO compounds, *OPTICAL properties, *OPTICAL switching, *LASER beams, *DIFFRACTION patterns, *AZO dyes
Abstract

A novel azo dye compound, Ethyl (E)-4-((5-hydroxy-3,4-bis(hydroxyl methyl)-6-methyl. pyridin-2-yl)diazenyl)benzoate (EAB), have been synthesized by the coupling reaction and characterized by FT-IR, 1H-and 13C-NMR, Mass, and UV–visible spectroscopies. The nonlinear optical (NLO) properties of the EAB compound via the finding of the nonlinear refractive index (NRI) using continuous wave (cw), low power 473 nm, TEM00 mode laser beam have been studied via the diffraction patterns (DPs) and the Z-scan. Effect of power input of the laser beam, types of beam wavefront and temporal variation of the DPs are discussed. The all-optical switching (AOS) using two laser beams is proved to occur in this compound. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
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