Spectral and Photophysical Parameters of Set Hydrophobic Phtalocyanines and Porphyrins in Water-Micellar Solution

Abstract

The spectral and photophysical parameters for the family of hydrophobic metallocomplexes of phthalocyanines and porphyrins, which were incapsulated in polymeric micelles, has been studied in water solutions at 293 K. The fluorescent characteristics of above mentioned compounds with light ions of Mg(II) and Zn(II), as it was found, have weak differences between the values of main photophysical parameters in water-micellar solutions relatively to the same values in organic solvents. In contrast, the encapsulation of the porphyrins with heavy Pd(II) and Pt(II) ions into polymeric micelles leads to a significant increase in the values of quantum yields and phosphorescence lifetimes in water-micellar solutions relatively to the same characteristics in organic solvents. It was shown that these differences were due to the spin-orbital coupling effect for compounds with Pd(II) and Pt(II) ions, as well as, significant decreasing of the efficiencies quenching of triplet states by molecular oxygen upon encapsuling of compounds in polymeric micelles. The luminescent parameters for the studied compounds depend on the nature of the polymeric micelles and the structure of the studied compounds.