Lanthanide complexes have been studied as potential luminescent sensors for analytes reliant upon enhancement of metal-based emission. Sensing by these systems depends on modulation of their spectroscopic signatures through direct sensitization of the lanthanide excited state, upon the formation of ternary lanthanide complexes; or relies upon chelating agents displacing coordinated inner-sphere water molecules, capable of quenching the lanthanide excited state. Lanthanide complexes have also been studied as Single Molecule Magnets for potential applications associated with information storage, quantum computing and spintronics.<br/><br/>The work to be discussed scrutinizes octadentate europium complexes as potential sensors for aromatic dicarboxylates. The recognitive event is defined by the formation of ternary europium complexes inducing a photophysical change characterized by enhanced Eu(III) emission. The discussion extends to a composite material consisting of gadolinium complexes, acting as molecular magnets, along the surface of multi-walled carbon nanotubes. The observed magnetophysical response prompted by the Gd(III) chelation is of interest for developing carbon-based spintronic devices.

Photophysical and magnetophysical responses of lanthanide complexes and composites

ACS Spring Meeting 2021

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