الفهرس 
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Abstract
Summary
Recently, the Schiff bases and their metal complexes find applications in the fields of organic and inorganic dyes industry, agriculture, analytical chemistry, catalysis, polymer sciences and biological science as antimicrobial agents, antifungal, medical science as anticancer, antiseptic. Various studies had shown that, the azomethine group (-CH = N-) in Schiff base metal complexes had considerable biological significance and found to be responsible for biological activity such as antibacterial. Thus the present study describes the preparation and characterization of some nano organic and inorganic pigments derived from metal complexes. This thesis which in titled ―preparation and characterization of nano pigments derived from metal-complexes‖ includes three chapters; introduction, experimental, results and discussion (characterization of the organic ligands and studies of complexes in solution, studies of solid complexes and biological activity).
1. Chapter (I) includes a literature survey of the previous studies on hydrazone Schiff base ligands. Also this chapter contains a literature survey on lanthanide ions under investigation and its complexes with the Schiff base. Also it contains a literature survey on nano pigments. This survey includes spectrophotometric, potentiometric, thermal and biological activity studies.
2. Chapter (II) includes the experimental part, the materials, and the preparation of the Schiff bases under investigation, the preparation of the Schiff base ligand complexes with some transition metal ions such as Sm (III), Gd (III), Tb (III), Cu (II) and Co (III). The preparation of some nano pigments derived from metal complexes. It comprises also information about the instruments and measurements which were used for IR, 1H-NMR, SEM, UV-Vis spectrophotometric, potentiometric, thermal analysis, ESR, X-Ray as well as biological activity.
3. Chapter (III) includes three parts:
PART (I): includes studies on the newly prepared Schiff base ligands which is divided into six parts:-
a. The melting points and elemental analysis for Schiff base ligands were studied.
b. The IR spectra of the ligands under investigation were studied and the different functional groups were assigned.
c. The 1H-NMR spectra for different types of hydrogen expected for ligands (I-VIII) under study could be numerated determined and correlated to the molecular structure of the ligands.
d. The scanning electron microscope for the prepared ligands was studied from which we could reveal the morphology of Schiff base ligands and prove the nano-scale size of the single crystal of the ligands.
e. The spectral studies of the prepared organic ligands, where the electronic absorption spectra were studied in different organic solvents of polar and non-polar nature such as 1,4-dioxane, n-Hexane, acetone, ethanol and methanol.
f. The spectral behavior of ligands in universal buffer solution of different pH was studied from which we could determine their dissociation constants using two different methods [Half height method (H.H.M) and modified limiting absorbance method (M.L.A.M)].
PART (II): contains studies on complexes in solution by using potentiometric titrations which studied and done by using 0.1M HCl and 1.0M KCl. from the data obtained, the ionization constants of ligands and formation constants of the complexes formed were obtained. It was found that some ligands had two protonated hydrogen pK1H and pK2H and the others had one ionizable proton pK1H.
PART (III): includes studies of the solid chelates including IR, Electronic absorption spectra in nujolmull and DMF, thermal analysis (TG and DTA), X-Ray, SEM and ESR. Also the biological activity studies were performed