T-grafting BODIPY-Based Photosensitizers: The Synthesis of 2,6-Diethylacrylic-8-(<i>o</i>-methoxyphenyl)BODIPY and Its DSSC Performance

A new T-grafting photosensitizer of Dye-Sensitized Solar Cell (DSSC) has been developed by aligning Donor-Acceptor (D-A) group in an axially chiral BODIPY. Synthesis the dye was conducted over a linear approach involving one-pot, non-oxidative synthesis 1,3,5,7-tetramethyl-8-(o-methoxyphenyl)BODIPY, bromination, and finally C2/C6 ethyl acrylate Pd-Heck coupling to produce 65% 2-ethylacrylic-1,3,5,7-tetramethyl-8-(o-methoxyphenyl)BODIPY (BOD-8) 35% 2,6-diethylacrylic-1,3,5,7-tetramethyl-8-(o-methoxyphenyl)BODIPY (BOD-9), both characterized appearance acrylic alkenes at 6.05, 7.63 ppm for BOD-8, additional 5.43, 7.80 doublet peaks BOD-9. The resulting showed excellent photon harvesting-related photovoltaic properties electronic injection regeneration processes where esters were found be Donor aryl Acceptor. Eventually, produced current 0.5% efficiency, similar horizontal D-A DSSC design.