Fig. 5: Photoreduction of various aryl bromides and chlorides via TS-conPET process with far red light. | Nature Communications

Fig. 5: Photoreduction of various aryl bromides and chlorides via TS-conPET process with far red light.

From: Long wavelength near-infrared and red light-driven consecutive photo-induced electron transfer for highly effective photoredox catalysis

Fig. 5

a Comparison of the luminescence intensity of PdTPBP under constant irradiation of 625 nm and 650 nm light. b The photoreduction yield of 4-bromoacetophenone at different reaction volumes including 2 mL and 20 mL when irradiated by far red light (650 nm) for 4 h. c Photocatalytic mechanism for the red light-driven reduction of aryl halides with PdTPBP/PDI pair. 3PdTPBP*, the excited triplet state of PdTPBP; 3PDI*, the excited triplet state of PDI; PDI•–, the radical anion of PDI•–; 2PDI•–*, the excited doublet state of PDI•–; Et3N•+, the radical cation of Et3N; Ar-X, aryl halide; Ar-X•–, the radical anion of aryl halide. d Far red light (650 nm)-driven TS-conPET process for the efficient photoreduction of various aryl halides. The red bonds highlight the reacted carbon halide bond, meanwhile, the blue bonds refer to the newly generated bond.

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