Eu³⁺ and Tb³⁺ @ PSQ: Dual Luminescent Polyhedral Oligomeric Polysilsesquioxanes.

ABSTRACT: The synthesis and characterization of novel luminescent amorphous POSS-based polysilsesquioxanes (PSQs) with Tb³⁺ and Eu³⁺ ions directly integrated in the polysilsesquioxane matrix is presented. Two different Tb³⁺/Eu³⁺ molar ratios were applied, with the aim of disclosing the relationships between the nature and loading of the ions and the luminescence properties. Particular attention was given to the investigation of site geometry and hydration state of the metal centers in the inorganic framework, and of the effect of the Tb³⁺ → Eu³⁺ energy transfer on the overall optical properties of the co-doped materials. The obtained materials were characterized by high photostability and colors of the emitted light ranging from orang

SUBMITTER: Marchesi S 

PROVIDER: S-EPMC9694933 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature