Charge transfer vs. proton transfer in the excited-state dynamics of biomimetic pyranoflavylium cations - Espinoza, Eli M; Clark, John A; Silva, Cassio Pacheco da; Derr, James B; Silva, Gustavo Thalmer de Medeiros; Billones, Mimi K; Morales, Maryann; Quina, Frank Herbert; Vullev, Valentine I (Journal of Photochemistry and Photobiology, 2022)