الفهرس 
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Abstract
The thesis comprises of three chapters:
Chapter 1 includes the introduction and a literature survey on arylhydrazone ligands, their metal complexes, electrical properties, optical properties and biological studies.
Chapter 2 concerned with the experimental work. The following ligands (HLn) were prepared:
HL1 : 5,5-dimethyl-2-(2-(4-methylphenyl)hydrazono)cyclohexane-1,3-dione.
HL2: 5,5-dimethyl-2-(2-phenylhydrazono)cyclohexane-1,3-dione.
HL3: 5,5-dimethyl-2-(2-(4-chlorophenyl)hydrazono)-cyclohexane-1,3-dione.
Cu(II) complexes were prepared from the reaction of the ligands (HL1, HL2 and HL3) with Cu(CH3COO)2.H2O in ethanol solution . The formed complexes are [Cu(Ln)(CH3COO)].xH2O.
The synthesized ligands and their Cu(II) complexes were investigated by elemental analysis (C, H and N), molar conductivity measurements, magnetic measurements, spectral studies (IR, electronic, mass, 1H and 13C NMR), thermal studies (TGA), X-ray, molar conductivities and optical properties.
Chapter 3 includes the preparation and characterization of arylhydrazone ligands (HLn) and their Cu(II) complexes [Cu(Ln)(CH3COO)].xH2O (1-3) by elemental analysis, IR and UV-Vis. spectra as well as Magnetic susceptibility, X-ray and thermal measurements. IR spectra show that the ligands (HLn) is noted that the predicted absorption band for −N=N− is missed on the other hand a broad band of ν(NH) group which corresponding to H-bonded hydrazone structure. The calf thymus DNA binding activity of the ligands (HL1, HL3 and HL3) and their Cu(II) complexes (1-3) were studied by absorption spectra. The antibacterial activities of the investigated compounds were tested against two local Gram positive bacterial species (Bacillus cereus and Staphylococcus aureus) and Gram negative bacterial species (Escherichia coli) on nutrient agar medium. The mechanism and the catalytic oxidation of 3,5-Di-tert-butylcatechol (3,5-DTBC) by [Cu(Ln)(CH3COO)].xH2O in the presence of air. The optimized bond lengths, bond angles and the calculated quantum chemical parameters for the ligands (HLn) were investigated. The effect of temperature was studied and the corresponding thermodynamic parameters (G, H and S) were derived and discussed. The optical absorption properties of the ligands thin films were investigated. The absorption coefficient (α) spectra reveals two absorption peaks which are assigned as π-π* and n-π* transitions. The emission properties of the ligands thin films were investigated. It is found that emission peaks are presented nearly at 490, 555 and 600 nm.