Abstract:
19 kinds of Schiff-bases and 5 kinds of their complexes have been synthesized, and their fluorescence spectra were determined. Regularity in the spectra has been found. For mono-Schiff base, there is the symmetry in spectra between the exited spectrum and emission spectrum. However, this symmetry in the spectra for bis-Schiff base is poor. For both complexes of mono-Schiff base and bis-Schiff base, the symmetry of spectra between the exited spectrum and emission spectrum is perfect. These phenomena are attributed to the degree of molecular conjugation, which have been explained in this paper.
