Synthesis, Post‐Modification and Fluorescence Properties of Boron Diketonate Complexes

A family of fluorescent dyes based on a boron diketonate core with extended conjugation has been prepared by a three‐step strategy. The complexes are fluorescent both in solution and in the solid state, with a large Stokes' shift. A free phenol group can be used to further modify the compounds with no loss of emission efficiency.