Accordingly, the luminescence for BODIPY-NOD-4 was not detected. The quantum yield of 1 O2 generation Φ∆ in CCl4 was determined by comparison with 2I-meso-phenyl-BODIPY for which the QY was reported to be 0.81 (in toluene; compound I2-BDP in ). Results are shown in Table . We also determined Φ∆ in EtOH by the diappearance of 1,3diphenylisobenzofuran (DPBF) absorption at 410 nm as described in using methylene blue as a standard (Φ∆=0.50 ). The results are shown in Table and are largely the same up to the experimental uncertainty, whereas the experimental data are presented in Supplementary materials.