Poly(N-isopropyl acrylamide)-Gold Nanoassemblies on Macroscopic Surfaces: Fabrication, Characterization, and Application

In this study, we report on the fabrication of the nanoassemblies consisting of the poly(N-isopropyl acrylamide) (PNIPAAm) brushes immobilized with gold nanoparticles (Au NPs), The employed process involves grafting of the carboxyl terminated PNIPAAm chains Oil all underlying substrate ill a brush conformation followed by the immobilization of surface functionalized Au NPs by means of physical interaction (hydrogen bonding). Atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy have been employed to characterize the prepared PNIPAAm-Au nanoassemblies. Polymer brushes have been round to Suppress the nanoparticles' aggregation and, hence, facilitate the complete SUI-face coverage. Furthermore, we demonstrated the application Of resulting PNIPAAm-Au nanoassemblies ill the fabrication of the temperature nanosensors. The employed approach is simple and highly versatile for the modification of macroscopic surfaces With a wide range of NPs.