Bisdonor-azaBODIPY-fullerene supramolecules: syntheses, characterization, and light-Induced electron-transfer studies

摘要: Achieving ultrafast light-induced charge separation requires carefully selected donor and acceptor entities often held together in a closer proximity. In the present investigation, two tetrads featuring near-IR-emitting sensitizer, BF2-chelated dipyrromethene (azaBODIPY), covalently linked to fullerene through central boron atom electron-donor entities, namely, N,N-dimethylaminophenyl, or bithiophene close proximity entity were designed synthesized, results compared earlier-reported bisferrocene–azaBODIPY–fullerene this series. The synthesized by establishing multistep procedure exhibited typical spectral, redox, photo reactivities of individual components with some degree intramolecular interaction. X-ray structure one precursor triads was also solved as part investigation. Ultrafast photoinduced electron transfer witnessed case both femtosecond transient absorption s...