Synthesis of Tunable Fluorescent Imidazole-Fused Heterocycle Dimers

A short, concise, and one-pot synthesis of imidazo-fused heterocycle dimers with tunable fluorescent properties has been developed. By the first time use of glyoxal dimethyl acetal in the Groebke-Blackburn-Bienaymee (GBB) three-component reaction (3CR), the innovation features a new series of fluorescence-tunable imidazo-fused heterocycle dimers exhibiting a broad substrate scope with good yields. Luminescence studies demonstrate that these GBB-dimers possess color-tunable properties, and their emission colors can be successively changed from blue to green and yellow by easy substituent control.

Automated summary

A concise and one-pot method for synthesizing imidazo-fused heterocycle dimers with tunable fluorescent properties has been developed, which allows for the control of emission colors by substituent manipulation.