The lanthanide (Ln) ions possess unique photophysical properties rendering them useful in a variety of areas including biological imaging and sensor applications. To fully exploit the luminescent properties of certain Ln ions in the form of emissive compounds, suitable ligands must be used to bind the metal and act as an �antenna,� absorbing light and transferring the energy to the Ln for subsequent emission. We are exploring a macrocyclic tetraiminodiphenolate (TIDP) ligand motif for Ln chelation and further luminescent applications. The complexes of interest form in one convenient, metal-templated step from readily available precursors and can easily be structurally modified to tune the metal emission. The synthesis, characterization, and applications in biological anion sensing with the TIDP complexes will be discussed, as well as their incorporation into silica nanoparticles to further enhance the Ln emission from this new series of complexes.

Macrocyclic lanthanide complexes for luminescent sensor applications

243rd National Meeting (2012)

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