Desenvolvimento e estudos de materiais funcionais a base de Protoporfirina IX Sal Dissódico/Argila

Abstract

In this work, new hybrid functional materials formed by nanocomposites of Protoporphyrin IX disodium salt and haloisite nanotubes (PpIXk / HNTs) were developed and studied. In these materials the PpIXk molecules were adsorbed to the surfaces of the haloisite nanotubes remaining at different levels of aggregation. The results showed that the level of aggregation of protoporphyrin IX disodium salt (PpIXk) molecules exerts a strong influence on the photoluminescence emission efficiency. Analysis of the excitation photoluminescence (PLE) spectra, photoluminescence (PL) and photodegradation curves as a function of the PpIXk concentration, showed that the photoluminescence spectra of the PpIXk / HNTs samples are composed of the emission of monomers with different amounts of dimers around it. The photodegradation curves showed that even adsorbed to the surface of the nanocomposites the PpIXk molecules still have photochemical properties.