Synthesis of the Core Compound of the BODIPY Dye Class: 4,4′-Difluoro-4-bora-(3a,4a)-diaza-s-indacene

We report the synthesis and characterization of the missing reference core compound 4,4-Difluoro-4-bora-(3a,4a)-diaza-s-indacene 1 of the BODIPY fluorescent dye class. The compound exhibits a fluorescence lifetime of 7.2 ns and has a high photostability.

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