Abstract
We investigated the one/two-photon fluorescence and excited state dynamics properties of two synthesized phenoxy-phthalocyanines (Pc1 and Pc2) using mild reaction coordination method. The results show that the fast decay component in the time-resolved fluorescence technique dynamics comes from the intramolecular vibrational relaxation, the slower ones from the internal conversion. Furthermore, in comparison with one-photon fluorescence spectra, the red shift of two-photon fluorescence spectra can be explained by the reabsorption effect of molecules. The samples are expected to be a potential candidate for optical applications and photodynamic therapy.
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