Surface-modified lead iodide nanorods were synthesized by one-step room temperature solid-state reaction of lead nitrate with potassium iodide in the presence of a nonionic surfactant, polyethylene glycol. The chemical composition and structural features of the products were investigated by elemental analysis, XRD, IR, TG, SEM and TEM, respectively. The results confirmed the existence of organic layer connected with the inorganic nuclei. The products consist of a large quantity of nanorods. The diameters of PbI₂ nanorods modified by PEG600 are 100 nm and lengths up to several micrometers. The surfactant polyethylene glycol, which not only modifies the surface of lead iodide but also greatly impacts the morphology of the products, plays an important role in the formation of the products.

Key words: lead iodide, nanorod, surface modification, room temperature solid-state reaction