Researchers from the ZIOC discovered a new class of superphotoacids

Photoacidity is a phenomenon that consists either in the appearance or in the change of acidic properties when light is absorbed. Molecules with photoacid properties can be used to activate pH-dependent processes at a certain point in an organism or artificial system.

Scientists of the Laboratory of Chemistry of Diazo Compounds of the Zelinsky Institute are actively developing of new fluorescent materials. In their recent study, they found that electron-deficient 5-hydroxyisoquinolones, previously obtained from amines and cycloheptatriene derivatives, in addition to impressive fluorescent properties, can be used as superphotoacids. This conclusion was made based on the absorption and fluorescence indices in aqueous media at various pH values and organic solvents. The results obtained will be the starting point for the search for effective new generation materials with valuable properties.

Source:

Rinat F. Salikov, Alexander Yu. Belyy, Konstantin P. Trainov, Julia A. Velmiskina, Michael G. Medvedev, Vladislav M. Korshunov, Ilya V. Taydakov, Dmitry N. Platonov, Yury V. Tomilov Superphotoacidic properties and pH-switched Stokes shifts in electron-deficient 5-hydroxyisoquinolone derivatives J. Photochem. Photobiol. A, 2022, 427, 113808. DOI: 10.1016/j.jphotochem.2022.113808.