Effective photosensitized emission of a Tb(iii) complex using a β-diketonate photosensitizer and an oxygen barrier system in a thermally populated triplet state

Abstract

A Tb(iii) complex with a β-diketonate photosensitizer and bulky ancillary ligands exhibits strong photosensitized emission. The bulky ancillary ligand plays a crucial role in shielding from oxygen, resulting in effective photosensitized emission.

Guest-Responsive Near-Infrared-Luminescent Metal–Organic Cage Organized by Porphyrin Dyes and Yb(III) Complexes

“…We considered that the guest-responsive turn-on NIR fluorescence enhancement under air conditions was attributed to oxygen blocking by the formation of a tight host–guest complex. The structural protection of the ligand π surface in the luminescent Ln­(III) complexes is a key strategy for the suppression of oxygen quenching . The higher energy-transfer efficiency of the MOC with guests in air can be explained by the stronger intercalation and larger cover of the porphyrin π surface.…”