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Simulated UV–vis of ARC, ARC-5,7-diOMe, and ARC-5,7-diOMe-6-Br. ARC-diOMe and ARC-diOMe-Br exhibit better visible-light absorption than unsubstituted ARC. When para-tolyl bromination of ARC-diOMe was attempted, bromination at the sixth position between two methoxy substituents continuously occurred; therefore, ARC-diOMe-Br was instead targeted as a potential chromophore for visible DCPI after computationally confirming its viability as a visible-light DCPI.
