Solvent effect on optical properties of hydrated lanthanide tris-acetylacetone

Optical and structural properties of nanostructured CeO2:Tb3+ film

“…Generally rare earth (RE) ions based on intra-configurational electronic transitions show sharp spectral transitions in visible region arising from their 4f electrons [1,7,8]. When combined with ultra-violate light emitting diode (UVLEDs), phosphors should be in a thin-film form and provide advantages such as high emission efficiencies, good compatibility with semiconductor devices and low fabrication cost.…”

“…be a promising photoluminescence host material because of strong light absorption through the charge transfer (CT) from O 2− to Ce 4+ [1][2][3][4][5][6][7][8].…”

Photoluminescence, optical absorption and hypersensitivity in mono- and dinuclear lanthanide (TbIII and HoIII) β-diketonate complexes with diimines and bis-diimine bridging ligand

“…These are termed as hypersensitive transitions [11,12]. The alterations in the spectral intensities and band shapes of the hypersensitive transitions can be used to probe complex formation, changes in coordination geometry and complex-ligand/ complex-solvent interactions in solution [13][14][15][16][17].…”

Terbium sensitized luminescence for the determination of fexofenadine in pharmaceutical formulations

“…It has been reported, that the difference in intensity of the emission line between the four alcoholic solutions indicates the different coordination behavior of alcohols with terbium metal with methanol exhibiting the strongest coordination ability Qin et al, 2003). The emission intensity decreases with increase in the alkyl chain in alcohols (Ansari et al, 2007). The low sensitization in water may be due to the O-H oscillators of water molecules that are known to quench the excited state of the lanthanide ions by interaction with high-energy vibrations associated with O-H. Solvent molecules can usually replace coordinated water and avoid high frequency O-H bond vibration--thus greatly decreasing energy loss resulting through the coordination of water molecules, and increasing the fluorescence intensity of the emitting lanthanide ion.…”