الفهرس 
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Abstract
The inhibition effect of newly synthesized aminophenol derivatives (D.P.A & B.A.A) on C-steel and its adsorption behavior in 2 M HCl acidic medium were investigated by several electrochemical techniques such as electrochemical impedance spectroscopy (EIS), electrochemical frequency modulation (EFM) techniques, and Surface morphology (SEM-EDX). The total resistance of the C-steel corrosion process and inhibition efficiency of compounds (D.P.A & B.A.A) was increased with the increase of the inhibitor concentration. from Tafel polarization curves, the corrosion rate was decreased with increasing compounds concentration into HCl solution. Investigation of the corrosion inhibition mechanism due to formation of an absorption layer on the C-steel surface was performed using electrochemical impedance technique (EIS). The surface morphology of inhibited C-steel changes is monitored by (SEM–EDX). Aminophenol derivatives compounds (D.P.A & B.A.A) were screened against three local gram-positive bacteria (Bacillus subtilis, Staphylococcus aureus and Bacillus cereus) and four local gram-negative bacteria (Klebsiella pneumoniae, Escherichia coli, Pseudomonas sp. and Enterobacter sp.). Antifungal activities were determined against Fusarium oxysporum, Aspergillus niger and Candida albicans. Molecular docking was used to predict the binding between aminophenol derivatives compounds (D.P.A & B.A.A) and the receptors of the crystal structure of Staphylococcus aureus (3q8u) and the crystal structure of Escherichia coli (3t88). The compound (D.P.A) showed higher activity than compound (B.A.A); their antibacterial affects on Staphylococcus aureus along with the in-silico docking showed that this compound (D.P.A) represent antibacterials targeting 3q8u protein. The compound (D.P.A) exhibited antibacterial activities against Bacillus subtilis, Staphylococcus aureus, Enterobacter sp. and Klebsiella pneumoniae. The activity of compound (D.P.A) was the highest ones.