Europium ions as a spectroscopic probe in the study of PMMA-SiO2 hybrid microstructure with variable coupling agent

Exploring the Influence of ZnF2 on Zinc-Tellurite Glass: Unveiling Changes in OH Content, Structure, and Optical Properties

“…Europium (Eu 3+ ) stands out as one of the most captivating and extensively researched RE 3+ , primarily due to its myriad applications in lasers and optical communication. Additionally, its luminescence properties exhibit remarkable sensitivity to environmental factors, rendering it an invaluable spectroscopic probe. − The 5 D 0 → 7 F 2 emission, referred to as hypersensitive, is strictly forbidden in sites with inversion centers; therefore, any distortion caused by the environment around the ion increases the emission intensity. As an electric dipole transition, the hypersensitive emission of Eu 3+ relies on the establishment of a vector within the ion, necessitating interaction with ligands.…”