Interest in lanthanide luminescence stems from an expanding need to implement luminescent materials in optical telecommunications, coatings, biological probes, theranostics, and molecular imaging applications. Trivalent lanthanide ions in particular are utilized in these applications as they possess sharp and easily recognizable emissions in the visible and near-infrared ranges, unlike the broad emissions of organic chromophores. This unique optical property is a result of 4f shielding by filled 5s<sup>2 </sup>5p<sup>6</sup> subshells leading to “buried” f-f transitions. For the same reason, however, lanthanide ions possess low absorption coefficients. To remedy this problem, organic ligands are applied to sensitize the lanthanide ion by transferring excited electrons from ligand to metal, thus making otherwise inaccessible f-f transitions accessible. Herein, we report NMR scale speciation studies with lanthanum (III) salts and a novel pincer ligand.

Speciation studies between a novel pincerlLigand with lanthanum (III) salts

249th National Meeting (2015)

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