Spectral and Luminescent Properties of Metal Complexes of 3,4,9,10-Perylenetetracarboxylic Acid

摘要

The spectral and luminescent properties of solutions of perylenetetracarboxylic acid (PTCA), its ionic forms, and its aggregates and complexes with rare-earth ions are studied. The mechanisms of the fluorescence quenching of PTCA upon complex formation are discussed. It is concluded that the complex formation in such systems is of the intrasphere type. Comparison between the measured intracomplex-deactivation energies of the fluorescing states of PTCA and pyrene tetrasulfonate indicates that the metal-ligand interaction is more efficient in carboxylic complexes.