Used as a photoredox catalyst in organic synthesis, enabling light-driven reactions such as C–C and C–N bond formations under mild conditions. It is particularly effective in visible-light-mediated transformations, including radical additions, cyclizations, and dehalogenation reactions. Its strong reducing ability in the photoexcited state makes it suitable for single-electron transfer processes. Also employed in electrochemical studies and as a redox mediator in certain sensor applications.