ABSTRACT

The structure and thickness of the prepared films and monolayers depend on the concentration of nanoparticles in the solutions as well as on the viscosity of solvents. In the case of sol-gel processes, the sol is the starting precursor that is deposited on a substrate to form a film or monolayer of desirable properties. This wet chemical approach is a cheap and low-temperature technique that allows fine control of the product composition and doping elements can be easily introduced. The formation of silver nanoparticle monolayers on silanised surfaces of glass, carbon and gold was also described in the work of. Recent literature evidence showed that the successful application of colloid self-assembly processes to produce silver particle monolayers and multilayers of controlled structure and functionality requires a thorough knowledge of the aforementioned parameters. For biological applications, silver nanoparticle coatings immobilised on monolayers of cationic polyelectrolytes seem to be the most promising.