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NMR evidence of a photobase generator from ARC-5,7-diOMe-6-Br-DMPT/BPh4. The peaks of DMPT emerge after irradiation of the PBG, where the efficiency of photo-reductant generation is 77%. Ethylene carbonate was used as an internal standard for quantitative NMR. The concentration was 14.7 mM in deuterated dimethyl sulfoxide with 2.0 mW/cm2 405 nm LED irradiation.
