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DTSTART;TZID=Europe/Paris:20260507T100000
DTEND;TZID=Europe/Paris:20260507T113000
DTSTAMP:20260502T115735
CREATED:20260414T144001Z
LAST-MODIFIED:20260416T144029Z
UID:5834-1778148000-1778153400@www.cnrs-imn.fr
SUMMARY:Séminaire Chen-Wei Liu
DESCRIPTION:  \nChen-Wei LIU\nNational Dong Hwa University (Taïwan) \n  \nContact : Camille Latouche (MIOPS)
URL:https://www.cnrs-imn.fr/event/seminaire-chen-wei-liu/
LOCATION:Amphi IMN
ATTACH;FMTTYPE=image/jpeg:https://www.cnrs-imn.fr/wp-content/uploads/2026/04/Chen-Wei_Liu.jpg
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260507T133000
DTEND;TZID=Europe/Paris:20260507T150000
DTSTAMP:20260502T115735
CREATED:20260417T100835Z
LAST-MODIFIED:20260428T063916Z
UID:5936-1778160600-1778166000@www.cnrs-imn.fr
SUMMARY:Séminaire Jeudis de la Chimie du Solide - João Rocha (CICECO-Aveiro)
DESCRIPTION:Functional Porous Materials: From Transition-Metal and Lanthanide Silicates to MOFs \n \nJoão Rocha \nDepartment of Chemistry\, CICECO-Aveiro Institute of Materials\, University of Aveiro\, Portugal \nBeyond zeolites\, certain microporous silicates constructed from transition metal- and lanthanide-containing heteropolyhedra constitute a particularly promising class of functional materials. In addition to the properties conventionally associated with zeolites\, these materials may also exhibit magnetic and luminescent behaviour of considerable interest. In my laboratory\, we have demonstrated the application potential of these materials in hydrogen/nitrogen separation membranes\, light-emitting devices [1]\, and the treatment of hyperkalaemia (elevated serum K+ levels)\, culminating in the development of a drug that is now available on the market. \nIn parallel\, our research on metal–organic frameworks (MOFs) seeks to exploit the remarkable modularity of these nanoporous hybrid materials\, which are composed of polyatomic metal assemblies interconnected by organic ligands. Although MOFs are generally less robust than zeolitic materials\, they offer a decisive advantage in terms of rational design and post-synthetic functionalisation. Within this context\, we have developed several research directions focused on luminescence-based thermometry\, anti-mosquito textiles\, and the capture of uranyl ions in aqueous media. We have furthermore designed MOFs based on tetrathiafulvalene phosphonates and lanthanide ions\, exhibiting mixed ionic and electronic conductivity [2]\, thereby opening significant prospects for applications in (opto)electronics\, catalysis\, and energy storage. \n______________________ \n[1] Wang\, Z.; Ananias\, D.; Carné-Sánchez\, A.; Brites\, C.D.S.; Imaz\, I.; Maspoch\, D.; Rocha\, J.; Carlos\, L.D. Adv. Funct. Mater. 2015\, 25\, 2824-2830.\n[2] Ribeiro\, C.; Tan\, B.; Figueira\, F.; Mendes\, R.; Calbo\, J.; Valente\, G.; Escamilla\, P.; Paz\, F.A.; Rocha\, J.; Dincă\, M.; Souto\, M. J. Am. Chem. Soc. 2025\, 147\, 63-68. \n  \nhttps://univ-nantes-fr.zoom.us/s/89388274201
URL:https://www.cnrs-imn.fr/event/seminaire-jeudis-de-la-chimie-du-solide-joao-rocha-ciceco-aveiro/
LOCATION:Visioconférence
ATTACH;FMTTYPE=image/jpeg:https://www.cnrs-imn.fr/wp-content/uploads/2026/04/Joao_Rocha.jpg
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DTSTART;TZID=Europe/Paris:20260604T143000
DTEND;TZID=Europe/Paris:20260604T160000
DTSTAMP:20260502T115735
CREATED:20260416T143002Z
LAST-MODIFIED:20260417T101111Z
UID:5910-1780583400-1780588800@www.cnrs-imn.fr
SUMMARY:Séminaire Mathieu G. Silly
DESCRIPTION:Soft X‑ray High‑Resolution and Time‑Resolved Photoemission: Surface Chemistry and Charge Dynamics in Photoactive Materials \n \nMathieu G. SILLY\nTEMPO Beamline\, Synchrotron SOLEIL\, France \nPhotoactive materials — from transition‑metal oxides to semiconductors and hybrid heterostructures — exhibit complex surface and interface phenomena that critically govern their optical\, catalytic\, and electronic performance. Understanding the interplay between surface chemistry\, defects\, and charge dynamics\, over timescales ranging from a few tens of picoseconds up to one second\, is essential for elucidating their photoactivity. \nHigh‑resolution photoemission spectroscopy (HRPES) provides chemical selectivity and surface sensitivity\, enabling the identification of oxidation states\, defects\, and interfacial electronic structures. When combined with time‑resolved photoemission spectroscopy (TRPES)\, this approach allows direct observation of fast picosecond‑scale dynamics — such as charge transfer and optically induced electronic relaxation — as well as slower nanosecond‑to‑second processes\, including trap‑mediated recombination\, surface photovoltage relaxations\, or charge drift on mesoscopic scales. \nThese multi‑timescale capabilities are particularly relevant for systems such as hematite under environmental conditions\, passivated silicon surfaces\, or colloidal nanoparticles coupled to oxides\, where simultaneous insight into local chemistry and transient charge dynamics is crucial. \nThe TEMPO beamline at the SOLEIL synchrotron\, dedicated to high‑resolution core‑level photoemission and pump–probe experiments over the ps–s temporal range\, provides a unique platform for probing light–matter interactions with both chemical and temporal sensitivity. The combination of HRPES and TRPES thus offers a powerful framework to unravel the mechanisms governing photoactivity and to guide the design of more efficient and durable photoactive materials. \n  \nContact : Mireille Richard-Plouet (PCM)
URL:https://www.cnrs-imn.fr/event/seminaire-mathieu-g-silly/
LOCATION:Amphi IMN
ATTACH;FMTTYPE=image/png:https://www.cnrs-imn.fr/wp-content/uploads/2026/04/Silly_Mathieu.png
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DTSTART;TZID=Europe/Paris:20260609T140000
DTEND;TZID=Europe/Paris:20260611T140000
DTSTAMP:20260502T115735
CREATED:20260413T124103Z
LAST-MODIFIED:20260413T124103Z
UID:5761-1781013600-1781186400@www.cnrs-imn.fr
SUMMARY:Congrès JEELS
DESCRIPTION:
URL:https://www.cnrs-imn.fr/event/congres-jeels/
LOCATION:Amphi IMN
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