Poly(allylamine) solution is widely used in various industrial and scientific applications due to its unique properties. It serves as a key component in water treatment processes, where it acts as a flocculant to remove suspended particles and impurities from water. The solution is also employed in the biomedical field for surface modification of materials, enhancing biocompatibility and promoting cell adhesion. In the electronics industry, it is utilized as a dielectric layer in the fabrication of thin-film transistors and other electronic devices. Additionally, poly(allylamine) solution finds application in the development of drug delivery systems, where it helps in the controlled release of therapeutic agents. Its versatility and effectiveness make it a valuable material across multiple disciplines.