Kauno technologijos universitetas, Vilniaus universitetas, Valstybinis mokslinių tyrimų institutas Fizinių ir technologijos mokslų centras, Lietuvos chemikų draugija, Lietuvos mokslų akademija
سنة النشر:
2023
الوصف:
Organic photovoltaic (OPV) solar cells aim to provide an Earth-abundant and low-energy-production photovoltaic solution. This technology also has the theoretical potential to provide electricity at a lower cost than first- and second-generation solar technologies. Although numerous high-performance electron transporting layers have already been developed and deployed in state-of-the-art OPVs, reports on hole transporting layers (HTLs) remain scarce [1-3]. Herein we report two diaryl-substututed carbazoles and their application as holeextracting interlayers in OPVs. The synthesis of diaryl-substituted carbazoles compounds (1-2), was done in a multistep synthetic procedure, starting from commercially available carbazole. 9H-carbazole was alkylated, then brominated and by the means of Arbuzov reaction, aliphatic bromide was transformed into phosphonic acid ethyl ester. Dibromo atoms were changed by palladium-catalysed Suzuki reaction to yield carbazoles containing naphtalene or phenylcarbazole fragments. Finally, the cleavage of the ester utilising bromotrimethylsilane resulted in phosphonic acid containing substituted carbazole fragments as shown in Figure 1. [...]
