Dimethylphenylphosphine is primarily used as a ligand in coordination chemistry, where it facilitates the formation of metal complexes. These complexes are often employed in catalytic processes, such as hydrogenation, hydroformylation, and polymerization reactions, due to the compound's ability to stabilize transition metals and enhance their reactivity. In organic synthesis, it serves as a precursor for the preparation of various phosphine derivatives, which are valuable in creating organophosphorus compounds. Additionally, it finds application in the development of advanced materials, including semiconductors and optoelectronic devices, where its properties contribute to the fine-tuning of material characteristics. Its role in catalysis and material science makes it a versatile compound in both industrial and research settings.