Hybrid Systems of Silver Nanoparticles Generated on Cellulose Surfaces

A method to produce hybrid systems of cellulose ultrathin films containing immobilized silver nanoparticles (Ag NPs) generated and grown at the surface is presented. Ag NPs were produced via it mild wet chemistry technique on Cellulose Ultrathin films spin-coated oil GaAs substrates and on modified films after grafting of diaminoalkanes activated by N,N'-carbonyldiimidazole. Appended amine groups operate as anchoring centers of the silver NPs enabling selective generation and immobilization of Ag NPs. The different phases of the modification process were followed by Fourier transform infrared spectroscopy (FTIRS) in attenuated total reflection in multiple internal reflections (ATR/MIR), X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). The generation of NPs is observed even oil untreated cellulose surfaces with sizes ranging from 7 to 30 run but not specifically at the surface. For modified surfaces with diaminoalkanes, higher Nil density regions including extensive plates are obtained, which are specifically located at the film extreme surface. The highest Nil density is achieved when the Nil generation is performed oil these modified surfaces in the presence of a carboxylic salt.