Undecylphosphonic acid is widely used as a surface modification agent, particularly in the treatment of metal oxides and ceramics. Its ability to form strong bonds with metal surfaces makes it valuable in creating corrosion-resistant coatings, enhancing the durability of materials in harsh environments.

In the field of nanotechnology, it serves as a stabilizing agent for nanoparticles, ensuring their uniform dispersion and preventing aggregation. This is crucial in applications like catalysis, where nanoparticle performance is highly dependent on surface area and stability.

Additionally, it is employed in the extraction and separation of rare earth metals due to its selective binding properties. This makes it a key component in processes aimed at recovering valuable metals from ores or electronic waste.

In the oil and gas industry, undecylphosphonic acid is utilized as a scale inhibitor, preventing the formation of mineral deposits in pipelines and equipment. This helps maintain operational efficiency and reduces maintenance costs.

Its applications also extend to the development of self-assembled monolayers (SAMs) on various substrates, which are used in sensors, biosensors, and electronic devices to improve surface functionality and sensitivity.