Synthesis And Characterization Of New Aza-boron-dipyrromethene And Boron-diisoindolomethene Dyes

Boron-dipyrromethene（BODIPY）functional dyes are well known as goodfluorescent agent, due to their unique optical and electronic properties andphotostability. Especially, the Aza-BODIPY and boron-diisoindolomethene dyeswith NIR absorption and emission are attractive for application in labeling ofbiomolecules and photovoltaic materials.In this work, we have used bromo-benzaldehyde and bromo-acetophenone asstarting materials to synthesis a series of Aza-BODIPY derivatives withbromo-substituents. We have used the bomo-Aza-BODIPY as precursor to obtain aseries of conjuction extended Aza-BODIPY by Palladium-catalyzed Suzuki couplingreaction. And then we try to transform the derivatives into ring-fused π-conjugatedstructure by intermolecular oxidation coupling reaction. On the other hand, we alsosynthesis a series of new Aza-BODIPY and boron-diisoindolomethene dyes withalkoxy substituents.All the new dyes are characterized by NMR spectroscopy, IR spectroscopy,UV-Vis absorption spectroscopy and fluorescent spectroscopy.