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Séminaire externe de l'ITAV "Upconverting nanoparticles: from design and synthesis to application in bioimaging"


Ce séminaire sera présenté par Clément ROUX, Laboratoire des intercations moléculaires et réactivité chimique et photochimique (IMRCP - CNRS/UT3 Paul Sabatier).

In many research contexts, luminescent nanoparticles have surpassed soluble fluorophores, thanks to key advantages such as resistance to photobleaching, longer excited state lifetimes, large Stokes shift. Whereas quantum dots have been in the spotlights for two decades, another class of nano-objects is currently coming of age: Upconverting nanoparticles (UCNPs). These particles, doped with lanthanide ions operate in a radically different, anti-Stokes fluorescence mode, where accumulation of photons on extremely long-lived excited states results in emissions at shorter wavelengths than the excitation. UCNPs enjoy quasi-null bleaching and blinking, are advantageously excited in the biological imaging window (near infrared), and provide sharp emission bands ranging from UV to NIR. In this presentation, we will give an overview of upconversion as a concept and the state of the art in UCNP-based imaging. We will then detail some of our contributions to the field, ranging from improved synthetic protocols based on microwave heating, to application in in vivo bioimaging.

Contact ITAV : Corinne Lorenzo (05 82 99 10 18)

Pour plus d'information, consultez le site internet de l'ITAV en suivant ce lien.

le 7 décembre 2018
à 11h
Salle des séminaires du Centre Pierre Potier

Date de mise à jour 29 novembre 2018

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