Singlet oxygen (1O2) is a common reactive oxygen species that has found wide application in wastewater processing, photochemical synthesis, and photodynamic therapy.In this paper, a dual-core metal [a Re(I)-based component and a Gd(III)-based component] photosensitizer was synthesized and doped into polymer fibrous films for 1O2 generation.Here the Re(I)-based component is responsible for the photosensitizing reaction which directly transformed Interfacings 3O2 to 1O2, while the Gd(III)-based component served as an auxiliary part that assisted the transformation from 3O2 to 1O2via synergistic effect by its triplet excited ligands.The photophysical parameters of this photosensitizer (denoted as Re-Gd) and its fibrous films (denoted as Re-Gd@PVP) were carefully recorded, discussed, and compared.It was Indoor/Outdoor Area Rug found that the excited state lifetime and photostability of Re-Gd were both improved after being doped into fibrous films, favoring 1O2 generation.
The 1O2 generation performance comparison between Re-Gd in the solid state, in solution, and fibrous films suggested that 1O2 generation performance was indeed improved by the electrospinning films.In addition, the positive factor of synergistic effect on improving 1O2-producing efficiency was confirmed by comparing Re-Gd@PVP films with reference films with a single-core metal photosensitizer having no synergistic effect.