AQ-based dyes have been used as photosensitizers for various applications such as photovoltaics, photocatalysts, photoactive peptides, and cell imaging; thus, we chose the AQ backbone to identify effective photosensitizers that can oxidatively modify Aβ peptides. As displayed in Figure , a series of AQ-based molecules with simple structural variations composed of only three basic carbon, hydrogen, and oxygen atoms was selected for this work.