Used as a photoredox catalyst in organic synthesis, enabling light-driven reactions such as C–H functionalization and cross-coupling under mild conditions. Its strong oxidizing power in the excited state allows for single-electron transfer processes, making it effective in radical-based transformations. Commonly applied in pharmaceutical and agrochemical research for constructing complex molecular frameworks with high selectivity and efficiency. Also utilized in mechanistic studies of electron transfer reactions due to its well-defined redox behavior and stability under irradiation.