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Ln(III) Complexes Embedded in Biocompatible PLGA Nanoparticles as Potential Vis-to-NIR Optical Probes. | LitMetric
In this contribution, we present the spectroscopic study of two NIR emitting hydrophobic heteroleptic (,)-Yb(tta) and (,)-Nd(tta) complexes (with tta = 2-thenoyltrifluoroacetonate and = N,N'-bis(2-(8-hydroxyquinolinate)methylidene)-1,2-(, or ,)-cyclohexanediamine), both in methanol solution and embedded in water dispersible and biocompatible poly lactic-co-glycolic acid (PLGA) nanoparticles. Thanks to their absorption properties in a wide range of wavelengths extending from the UV up to the blue and green visible regions, the emission of these complexes can be effectively sensitized using visible radiation, which is much less harmful to tissues and skin than the UV one. The encapsulation of the two Ln(III)-based complexes in PLGA allows us to preserve their nature, making them stable in water and to test their cytotoxicity on two different cell lines, with the aim of using them in the future as potential bioimaging optical probes.
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