Triphenylbismuthine is primarily used in organic synthesis as a reagent for the introduction of the phenyl group into various compounds. It is particularly valuable in the formation of carbon-carbon bonds, making it useful in the production of complex organic molecules. Additionally, it serves as a catalyst in certain polymerization reactions, aiding in the creation of polymers with specific properties. In the field of materials science, it is employed in the development of advanced materials, including semiconductors and electronic components, due to its ability to influence the electrical and structural characteristics of these materials. Furthermore, triphenylbismuthine is utilized in the preparation of bismuth-containing compounds, which have applications in pharmaceuticals and agrochemicals, contributing to the development of new drugs and pesticides. Its role in these diverse areas highlights its importance in both industrial and research settings.