PSS-[3-(2-Aminoethyl)amino]propyl-Heptaisobutyl substituted is primarily used in materials science and nanotechnology for surface modification and functionalization. Its unique structure allows it to act as a coupling agent, enhancing the compatibility between inorganic materials and organic polymers. This chemical is often applied in the development of advanced composites, where it improves the dispersion of nanoparticles within a matrix, leading to materials with enhanced mechanical, thermal, and electrical properties. Additionally, it is utilized in the creation of self-assembled monolayers (SAMs) on various substrates, which are critical in sensor technology, catalysis, and biomedical applications. Its ability to modify surface properties also makes it valuable in coatings and adhesives, where it improves adhesion and durability.