The Applied Organic Photochemistry Research Group synthesizes new photoactive heterocycles through described synthetic methodologies or developing new ones. In this way, we are able to obtain several different organic compounds, such as benzazoles (1), cyanines (2), squaraines (2), functionalized indoles (3), and different supramolecular scaffolds (4).
These compounds can present absorption in the UV-Vis region up to the NIR region. Some compounds present high thermal and photochemical stability with large separation between the absorption and emission maxima (Stokes' shift) due to a phototautomerism in the excited state so-called Excited State Intramolecular Proton Transfer (ESIPT).
The synthesized heterocycles can present different electronic conjugation, as well as different organic groups, such as -NH2, -COOH, -NO2, CH3, -CHO which allows these compounds to be envisaged as potential optical sensors for anions or macromolecules in solution, as photoactive monomers to produce new polymeric materials or as modified silicas in order to prepare new fluorescent hybrid materials.
Our Research Group also aims the photophysical characterization in solution, in the solid state or in confined media of fluorescent organic compounds using stationary and time-resolved techniques.