Used as a surface modifier in nanotechnology to stabilize metal nanoparticles, particularly gold and silver, by forming self-assembled monolayers. Its thiol group binds strongly to metal surfaces, while the hexyl chain provides hydrophobic properties and steric stabilization. Employed in the fabrication of biosensors, molecular electronics, and catalytic systems due to its ability to control interfacial properties. Also serves as a coupling agent in coatings and adhesives to improve compatibility between organic and inorganic materials.