Synthesis and characterizations of carbazole–isoindigo–carbazole oligomers for photovoltaic application

Recent advances in the application of isoindigo derivatives in materials chemistry

“…The synthesis of such compounds is also based on the Suzuki coupling reaction between alkylated 6,6'-dibromoisoindigos and corresponding arylboronic derivatives, leading to the formation of target molecules in moderate yield (Scheme 11). In these compounds, the triarylamine substituent is linked either directly to the isoindigo core or via a vinylphenylene bridge (see compounds 17a,b) [27,28]. The presence of the latter determines the cell efficiency to be an order of magnitude higher (3.57%) then when using 16a and 16b.…”