Pyrazine-driven dinuclear assembly of dysprosium(iii) β-diketonate complex: a fluxidentate bridging approach toward functional near-white luminescent materials.

ABSTRACT: Three single component Dy(iii) complexes featuring β-diketone ligand TTBD (4,4,4-trifluoro-1-(2-thienyl)-1,3-butanedione) were studied for their potential as white-light emitters. The complexes include a water-containing species (DyA) and two anhydrous species (DyM and DyD) incorporating the auxiliary bidentate ligand pyrazine (pyz). The coordination geometry and ligand environment, particularly the nuclearity and presence of sensitizing co-ligands, significantly influence the relative intensities of the characteristic Dy(iii) yellow ⁴F_9/2 → ⁶H_13/2 and blue ⁴F_9/2 → ⁶H_15/2 and ligand-based phosphorescence emissions. The introduction of pyrazine enhances energy transfer efficiency, leading to improved Dy(

SUBMITTER: Aggarwal V 

PROVIDER: S-EPMC12695141 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature