In situ luminescence in rare earth based Layered Double Hydroxides

• Grant number: 24/14928-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: December 01, 2024
• End date: June 30, 2025
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Danilo Mustafa
• Grantee: Lucas Franco Ramos
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 22/01314-8 - Study of layered double hydroxide (LDH) as potential bifunctional photocatalyst, AP.R

Abstract

The two-dimensional arrangement of the structure of layered double hydroxides (LDH) results in a very important type of inorganic layered matrix considering its versatility in terms of chemical composition, i.e., it is possible to introduce almost any polyvalent cation into its structure, including certain ions for luminescent applications. Thus, not only can the cations present in the layered structure be partially replaced by other cations, but it is also possible to accommodate sensitizing molecules between its layers through ion exchange with the intercalated anions. Rare earth ions (TR3+) can be introduced into the original structure of the LDHs as well as sensitizing anions (e.g., 1,3,5-benzenetricarboxylic acid) between its layers, resulting in the formation of a material based on TR3+ with optical properties. During the formation of this material, using in situ measurements, it is possible to monitor the luminescence of these ions present in the LDH layers and thus try to understand its formation process.