Journées scientifiques CenTRA 2024

Session

Jour 2

27 Feb 2024, 09:00

Principal/0-0 - Salle Amphitheatre (Batiment Principal)

27. 25 ans d'utilisation de complexes de lanthanide pour la biologie structurale

Eric Girard

27/02/2024, 09:00

Lanthanides et actinides

Conférence Invitée

Au cours de cette présentation, j’exposerai les challenges passé, présent et futur associés à l’obtention d’information structurale sur des macromolécules biologiques. Je me focaliserai sur l’apport des complexes de lanthanide dans la levée de problématiques méthodologiques pour les deux techniques que sont la diffraction des rayons X, en particulier pour la production de cristaux de...

15. Advanced Bioimaging: Improved Lanthanide Luminescent Bioprobes Through Pyclen Regiofunctionalization

Nadège Hamon (Université de Bretagne Occidentale)

27/02/2024, 10:00

Lanthanides et actinides

Oral

Lanthanide Luminescent Bioprobes (LLBs) exploit the pecular properties of lanthanides such as sharp and intense emission band spread from the visible to the Near Infra-Red (NIR) and long luminescent lifetimes (up to ms for Eu and Tb), which make them useful tools for time-resolved optical imaging. Structurally, LLBs consist in lanthanide chelates functionalized with a chromophore in charge of...

23. ABOUT THE ASSESSMENT OF THE CIRCULARLY POLARIZED LUMINESCENCE OF LANTHANIDE COMPLEXES

François Riobé (ICMCB -Bordeaux)

27/02/2024, 11:00

Lanthanides et actinides

Oral

Recent years have seen a renewed interest in circularly polarized luminescence (CPL), the emission asymmetry observed with luminescent chiral molecules. These studies are driven by potential applications, such as bioprobes for microscopy or optimized dyes for current displays, and by the widespread availability of CPL spectrophotometers. While chiral lanthanide(III) complexes are considered...

12. Synthèse de complexes de lanthanides Divalents par activation C−P Sélective

Ms Amal Bouammali

27/02/2024, 11:30

Lanthanides et actinides

Oral

Les complexes sandwichs divalents volumineux de lanthanides suscitent actuellement un grand intérêt dans le domaine de la recherche scientifique eu égard à leur stabilité, leur réactivité et leurs propriétés physiques incontournables.[1] Les ligands à base de polyarylcyclopentadiényle semblent des candidats très prometteurs dans la synthèse de ce type de structures, en raison de leurs...

13. New insight in lanthanide photophysics thanks to transient absorption spectroscopy.

Olivier Maury (CNRS-ENS de Lyon)

27/02/2024, 11:50

Lanthanides et actinides

Oral

Luminescent lanthanide complexes find broad application in UC processes and beyond: in lasers or displays, in solar cells, as anti-counterfeit materials, in photocatalysis and particularly as bioprobes in photodynamic therapy or imaging. Owning the particular nature of the 4f-electrons, the photophysical properties of f-element are uniques (parity-forbidden f-f transition, sharp transition,...

26. ACTINIDE XAS STUDIES AT THE MARS BEAMLINE OF SOLEIL

Pier-Lorenzo SOLARI (SOLEIL)

27/02/2024, 12:10

Lanthanides et actinides

Oral

MARS (Multi-Analyses on Radioactive Samples) beamline at the SOLEIL synchrotron is opened to the international community since 2010 and is dedicated to the study of radioactive samples [1] with a specific radioprotection safety design that fulfills the French ASN (Autorité de Sureté Nucléaire) requirements. The beamline is fully devoted to advanced structural and chemical characterizations of...

4. Single Erbium ion in Scheelite measured by microwave photon counting

Emmanuel Flurin (CEA)

27/02/2024, 17:15

Conférence Invitée

Electron spin resonance (ESR) spectroscopy is the method of choice for characterizing paramagnetic impurities, with applications ranging from chemistry to quantum computing, but it gives only access to ensemble-averaged quantities due to its limited signal-to-noise ratio. The sensitivity needed to detect single electron spins has been reached so far using spin- dependent photoluminescence,...