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NIR‐to‐NIR Two‐Photon Scanning Laser Microscopy Imaging of Single Nanoparticles Doped by YbIII Complexes |
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| Authors: | Dr Adrien Bourdolle Dr Anthony D'Aléo Dr Cécile Philippot Dr Patrice L Baldeck Dr Yannick Guyot Dr Fabien Dubois Dr Alain Ibanez Dr Chantal Andraud Dr Sophie Brasselet Dr Olivier Maury |
| Institution: | 1. Laboratoire de Chimie, CNRS UMR 5182, ENS Lyon, Université Lyon 1, Lyon, France;2. Aix Marseille Université, CNRS, CINaM UMR 7325, Campus de Luminy, Marseille, France;3. Univ. Grenoble Alpes, Institut NEEL, Grenoble, France;4. CNRS, Institut NEEL, Grenoble, France;5. Université Claude Bernard Lyon 1, Institut Lumière Matière, UMR 5306 CNRS-Université Lyon 1, Villeurbanne Cedex, France;6. Aix Marseille Université, CNRS, Centrale Marseille, Institut Fresnel, UMR 7249, Marseille, France |
| Abstract: | The photophysical and nonlinear optical properties of water‐soluble chromophore‐functionalised tris‐dipicolinate complexes LnL3]3? (Ln=Yb and Nd) are thoroughly studied, revealing that only the YbIII luminescence can be sensitized by a two‐photon excitation process. The stability of the complex in water is strongly enhanced by embedding in dispersible organosilicate nanoparticles (NPs). Finally, the spectroscopic properties of NBu4]3YbL3] are studied in solution and in the solid state. The high brightness of the NPs allows imaging them as single objects using a modified two‐photon microscopy setup in a NIR‐to‐NIR configuration. |
| Keywords: | fluorescence lanthanide complexes nanoparticles two-photon microscopy ytterbium |