Synthesis, characterization and nonlinear optical properties of four novel schiff base compounds

الملخص EN

Multifunctional Schiff base ligands 2-{(E)-[(2-hydroxypropyl) imino] methyl} phenol L1, 3-{(E)-[(2- hydroxypropyl) imino] methyl}-2-naphthol L2, 2-[(E)-{[(2R)-2-hydroxypropyl] imino} methyl]-4-[(E) phenyldiazenyl] phenol L3, and 2-[(E)-{[(2R)-2-hydroxypropyl]imino}methyl]-4-[(E)-(4-nitrophenyldiazenyl)]phenol L4 (Figure 1) were synthesized.

These Schiff base compounds have been characterized by C, H, N elemental analysis, and FT-IR, UV-Vis, and 1H NMR spectroscopy.

Molecular structures, electronic properties (charges), and hyperpolarizabilities of compounds L1–L4 were modeled with the semi-empirical AM1 (Austin Model 1) method.

The L4 molecule contains a lot of non-zero ß values revealing microscopic non-linear optic (NLO) properties.