Singlet Sensitization of a BODIPY Rotor Triggered by Marriage with Perovskite Nanocrystals

Surface chemistry and quantum confinement in nanocrystals (NCs) can modulate the energy transfer efficiency between lead halide perovskite (LHP) NCs acceptor molecules hybrid assemblies. It is demonstrated here that colloidal CsPbBr3 capped with oleic acid/oleylamine ligand pair act as a good singlet sensitizer of meso-(4-carboxyphenyl) BODIPY dye (C-BPY). The ≈85% at 1 × 10−6 m consistent strong binding to NC surface via carboxylate group, evidenced by nuclear magnetic resonance (NMR) Fourier-transform infrared (FTIR) spectroscopies. A thorough analysis suggests Förster (FRET) mechanism from dye. These results provide better understanding underlying interaction perovskite−organic chromophore nanohybrids be employed design novel harvesting