Abstract: One kind of novel chiral Zn porphyrin was synthesized. By means of elementary analysis, UV-Vis, IR, CD spectrum, and 1H-NMR, the chiral Zn porphyrin was charactered. The lowest energy conformation of the chiral zinc porphyrin was obtained by system search on the basis of Tripos force field. Nonlinear optical properties of the chiral porphyrin complexes were studied and refractive indexes were measured by Z-scan techniques. The result indicates that chiral zinc porphyrin has biggish nonlinear refractive index. This is an effective method by modifying chiral structure of porphyrin complexes to increase nonlinear refractive index.

Key words: Chiral metalloporphyrin, CD spectrum, Theoretical calculation, Nonlinear optical properties