A series of new lanthanide benzoates: Syntheses, crystal structures, and luminescent properties

Structural and optical characterisation of silanised Dy-doped-Gd2O3 NPs

“…6b) to investigate the influence of the dopant on the bandgap of Gd 2 O 3 NPs. We used eqn (1) to calculate the bandgap by assuming an indirect transition, as observed for lanthanide oxides. 71 Ens.…”

“…Lanthanide-based nanostructures exhibit unique optical and magnetic properties such as high magnetic moments, long emissive lifetimes, significant Stokes shifts, narrow emissive bands, and photostability. 1,2 These characteristics arise from their 4f valence electrons shielded by the 5s and 5p external orbitals. Their 4f-4f electronic transitions are poorly affected by the chemical environment and forbidden by the Laporte rule.…”

One Luminescent Cadmium Iodide with Free Bifunctional Azole Sites as a Triple Sensor for Cu2+, Fe3+, and Cr2O72– Ions

“…Currently, a large number of luminescent metal complexes as sensing materials have been intensively applied for the determinations of cations, anions, and organic molecular pollutants − , because of their simple pretreatment, high sensibility, low cost, fast response, and high sensitivity. The frameworks of these metal complexes with functional sites as the receptors for selectively recognizing and sensing the analytes are usually constructed by the combination of d 10 transition metal (or lanthanide) ions with aromatic-organic ligands, and their luminescence properties may be closely related to the ligand-to-ligand charge transfer (LLCT), ligand-to-metal charge transfer (LMCT), metal-to-ligand charge transfer (MLCT), and/or metal-centered emission .…”

“…The type of the organic components has a significantly structural directing effect on the frameworks of cadmium iodide components. Generally, protonated organic cations as either ligands or structure-directing agents (SDAs) are particularly preferable for a multiplicity of the anionic species [Cd x I y ] x − y (2 x < y ), as exemplified by simple tetrahedron [CdI 4 ] 2– , − ,, dimers [Cd 2 I 6 ] 2– or [Cd 2 I 7 ] 3– , trimers [Cd 3 I 7 ] − or [Cd 3 I 8 ] 2– , tetramer [Cd 4 I 10 ] 2– , hexamer [Cd 6 I 16 ] 4– , and one-dimensional (1-D) chains ∞ [Cd 2 I 6 ] − ,, or ∞ [Cd 5 I 12 ] 2– , while neutral organic molecules result in the formation of various neutral species [Cd x I 2 x ], such as dimer [Cd 2 I 4 ], hexamer [Cd 6 I 12 ], and 1-D chains ∞ [CdI 2 ], ∞ [Cd 3 I 6 ], and ∞ [Cd 4 I 8 ] . Conversely, OHCIs incorporating the cationic species [Cd x I y ] x − y (2 x > y ) are exceedingly scarce, ,, as a result of synthetic difficulties.…”