Preparation and luminescence properties of LB films based on 4-hexadecyloxybenzoic terbium

Langmuir-Blodgett (LB) films of 4-hexadecyloxybenzoic-terbium by using the subphase containing Tb³⁺ were prepared. The monolayer behavior of 4-hexadecyloxybenzoic acid (HOBA) on the subphase containing rare earth ions was studied. IR and UV spectra show that the rare earth ions are bound to carboxylic acid head groups and the coordination takes place between the polar head group and the rare earth ions. The luminescence spectra show that the LB films have the fine luminescence properties, and emit strong luminescence under UV light irradiation.