Fig. 2: Synthesis of a library of bioorthogonal and bioresponsive nitrobenzoselenadiazole PS.
From: Tuning singlet oxygen generation with caged organic photosensitizers
Chemical structures and synthetic procedures for the preparation of bioorthogonal caged PS (compounds 3–5, caging groups highlighted in green) and bioresponsive caged PS (compounds 6–8, caging groups highlighted in blue). Inset: chemical structures of 4-nitrophenylcarbonates (9–11) as precursors for the preparation of the caged nitrobenzoselenadiazoles (6–8).
