Used as a highly efficient photoredox catalyst in organic synthesis, enabling visible-light-driven reactions such as C–C and C–heteroatom bond formations. It is particularly effective in dual catalytic systems, where it facilitates electron transfer processes under mild conditions. Common applications include cross-coupling reactions, radical additions, and cyclizations, especially in pharmaceutical and fine chemical synthesis. Additionally, it serves as an air-stable copper(I) source for copper-catalyzed azide-alkyne cycloaddition (CuAAC, a type of click chemistry), enabling regioselective formation of 1,4-disubstituted 1,2,3-triazoles under mild, often anaerobic conditions in various organic solvents. Its stability under visible light and air, along with high redox activity, make it suitable for sustainable chemistry approaches in pharmaceutical, materials science, and molecular biology research.