Solvatochromism of pyranine-derived photoacidsElectronic supplementary information (ESI) available: Detailed description of the synthesis of methylated compounds. Lippert-Mataga plots of methylated compounds. Crystal structure of compound 2b. Correlation plots of photoacids for Kamlet-Taft and Catalán analysis. Plot of solute parameters vs. anion fluorescence percentage. Absorption and excitation spectra of 1a and 1e. Results of the theoretical calculations and molecular orbitals of MPTA and MPT
Photoacidity is frequently found in aromatic alcohols where the equilibrium dissociation constant increases by some orders of magnitude upon electronic excitation. In this study we investigated the solvatochromism of a family of recently synthesized super-photoacids and their methylated counterparts...
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