Aromatic N-donor ligands as chelators and sensitizers of lanthanide ion emission

Synthesis, Characterization, and Structural Comparisons of the First Neodymium(III) Sulfite‐Acetate Crystal Structure

“…The lanthanide elements have been of increasing interest owing to their unique properties and applications Lanthanide carboxylates have been widely studied due to their ability to have a wide variation in coordination modes, potential stereochemistry and the capability of being a useful starting material for the above applications. In particular, many structures of simple and complex lanthanide carboxylates, specifically acetates, have been isolated .…”

Localizing Perturbations of the Racemic Equilibria Involving Dipicolinate‐Derived Lanthanide(III) Complexes

“…5,37,38 In solution, these coordination compounds form a racemic equilibrium between enantiomeric Λ and Δ ligand configurations (figure 1). Upon UV excitation of the coordinated ligands, each enantiomer emits circularly polarized light with equal intensity but opposite degrees of polarization.…”

Synthesis and photophysical studies of tetrazolate‐based Eu(III) photoluminescent ternary complexes containing N‐heterocyclic phosphine oxides auxiliary co‐ligands

“…Sensitizing ligands such as β-diketonates, aromatic carboxylates or heterocyclic compounds (pyrazolonates, isoxazolonates) have been studied for their antenna effect and ability to transmit energy from the organic ligand to the lanthanide ion (12,13). Sensitizing ligands such as β-diketonates, aromatic carboxylates or heterocyclic compounds (pyrazolonates, isoxazolonates) have been studied for their antenna effect and ability to transmit energy from the organic ligand to the lanthanide ion (12,13).…”

“…These limitations can be avoided by applying the so-called 'antenna effect', which involves an organic ligand or inorganic matrix coordinated with the lanthanide ion. Sensitizing ligands such as β-diketonates, aromatic carboxylates or heterocyclic compounds (pyrazolonates, isoxazolonates) have been studied for their antenna effect and ability to transmit energy from the organic ligand to the lanthanide ion (12,13). The low absorption coefficient of the lanthanide ion itself can be overcome by employing an organic coordination framework, but these types of lanthanide complexes also have several drawbacks, such as luminescence quenching by matrix vibrations (-OH group), low photoluminescence (PL) quantum yield and low thermal stability in some cases, which reduces their application in modern technologies (14).…”