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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20260929T140000
DTEND;TZID=Europe/Paris:20260929T150000
DTSTAMP:20260910T152942Z
CREATED:20260910T152942Z
LAST-MODIFIED:20260910T152942Z
UID:10000248-1790690400-1790694000@sfp-alpes.fr
SUMMARY:Natali PLANK (School of Chemical and Physical Sciences and the MacDiarmid Institute for Advanced Materials and Nanotechnology\, Victoria University of Wellington\, New Zealand)
DESCRIPTION:Nanowire and carbon nanotube device structures for Biosensors and Artificial Neural Networks\nRésumé : \nCarbon nanotube (CNT) networks offer a particularly attractive platform due to their simple fabrication\, tunable electronic properties\, and ability to be interrogated through multiple electrical contacts on a single chip [1]. Functionalised carbon nanotube and graphene field effect transistors (CNTFETs and GFETs) have been used as the active channel in biosensors\, with the future promise of lab-on-a-chip diagnostics strongly motivating the research [2]. The ability to effectively sense analytes depends on multiple factors\, the conductivity of the platform [3]\, the robustness of the functionalisation and the selectivity and function of the receptor [4]. \nCarbon nanotubes also offer an interesting base platform for neuromorphic computing via physical reservoirs. Physical reservoir computing exploits the intrinsic dynamics of complex materials to perform temporal information processing with low power consumption and minimal training requirements. Disordered networks of memristive nanowires have emerged as promising neuromorphic architectures\, as they can host large numbers of nonlinear junctions that collectively generate rich spatiotemporal dynamics [5-7]. \nHere I will present our recent work on the development of the CNTFET and GFET platforms with aptamers and insect odorant receptors and the different challenges and device constraints we have encountered. I will also present our work on the development of the CNT platform for physical reservoir computing applications. \n[1]      Topinka\, M. A\, et al. Nano Lett. 2009 9\, 1866–1871 \n[2]      T An et al\, Lab Chip\, 2010\,10\,2052-2056 \n[3]      M Thanihaichelvan M\, et al\, Biosensors and Bioelectronics\, 2019\, 130\, 408-413 \n[4]      Nguyen et al.\, Nanomaterials\, 2021 11 (9)\, 2280 \n[5]      Milano\, G\, et al. Nat. Mater. 2022\, 21 (2)\, 195–202. \n[6]      Kotooka\, T.\, et al. Thermally Stable Ag 2 Se Nanowire Network as an Effective In-Materio Physical Reservoir Computing Device. 2024\, 2400443\, 1–10.  \n[7]      Zhu\, R.\, et al Online Dynamical Learning and Sequence Memory with Neuromorphic Nanowire Networks. Nat. Commun. 2023\, 14 (1)\, 6697.  \n\nShort Bio/CV\nDr Natalie Plank is Deputy Director for Commercialisation and Industry Engagement and an Associate Professor in Physics in the School of Chemical and Physical Sciences at Victoria University of Wellington. Natalie completed a BSc (Hons) in Astrophysics at The University of Edinburgh before doing an MSc in Microelectronics. She then completed her PhD on the functionalisation of carbon nanotubes for molecular electronics with Rebecca Cheung also at The University of Edinburgh. \nNatalie’s research interests are in the area of nanomaterial device fabrication and the characterisation of novel materials. Her current work focuses on nanomaterial device platforms for sensing technology and artificial neural networks. She is interested in carbon nanotubes and ZnO nanowires for nanowire transistor applications and in particular the ability to functionalise the nanomaterial channels with specific biomarkers or memristive molecules. Natalie’s core interests are in low cost fabrication techniques which allow for high throughput of devices whilst maintaining the particular material properties of the unique nanowire system. \n_ \nContact : deborah.verger@grenoble-inp.fr
URL:https://sfp-alpes.fr/event/natali-plank-school-of-chemical-and-physical-sciences-and-the-macdiarmid-institute-for-advanced-materials-and-nanotechnology-victoria-university-of-wellington-new-zealand/
LOCATION:LMGP – salle des séminaires\, Grenoble INP -Phelma 3 parvis Louis Néel\, Grenoble\, 38054\, France
CATEGORIES:Séminaire
ORGANIZER;CN="LMGP":MAILTO:deborah.verger@grenoble-inp.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261001T130000
DTEND;TZID=Europe/Paris:20261001T140000
DTSTAMP:20260917T134744Z
CREATED:20260917T134744Z
LAST-MODIFIED:20260917T134744Z
UID:10000255-1790859600-1790863200@sfp-alpes.fr
SUMMARY:Alice CLEYNEN (LJK\, Grenoble)
DESCRIPTION:Les différentes facettes de l’ARN : les opportunités ouvertes par le séquençage direct par nanopore\nRésumé : \nLe séquençage direct de l’ARN (Direct RNA Sequencing\, DRS) par nanopore (Oxford Nanopore Technologies) est une technologie qui lit les molécules d’ARN telles qu’elles existent dans la cellule\, sans jamais les copier. Cette absence d’amplification change la donne à plusieurs titres : elle évite les biais d’estimation de l’abondance des ARN inhérents à toute étape de PCR\, et surtout elle préserve les modifications chimiques qui décorent nativement les molécules — des marques aujourd’hui reconnues comme un véritable langage réactionnel. Autre atout\, les lectures produites (des « long-reads ») couvrent la molécule dans son intégralité\, ce qui permet d’assigner directement chaque lecture à un isoforme\, plutôt que de devoir les reconstruire a posteriori à partir de données au niveau du gène. Cerise sur le gâteau\, le DRS donne aussi accès à la longueur de la queue poly(A)\, dont un nombre croissant d’études souligne le rôle déterminant dans la stabilité et la traduction des ARN. \n_ \nContact : lucie.lamothe@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/alice-cleynen-ljk-grenoble/
LOCATION:IMAG – Salle de Réunion\, 150 place du Torrent\, St Martin d’Hères\, 38400\, France
CATEGORIES:Séminaire
ORGANIZER;CN="TIMC - IMAG":MAILTO:lucie.lamothe@univ-grenoble-alpes.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261001T140000
DTEND;TZID=Europe/Paris:20261001T150000
DTSTAMP:20260911T092949Z
CREATED:20260911T092949Z
LAST-MODIFIED:20260911T092949Z
UID:10000250-1790863200-1790866800@sfp-alpes.fr
SUMMARY:Zacharias AMARA (Conservatoire National des Arts et Métiers\, Paris)
DESCRIPTION:From Interface Engineering to Wavelength Control: Selective Photocatalytic Oxidations\nRésumé : \nIn this research seminar\, we present our group’s recent advances in the development of heterogenized photocatalytic systems for selective oxidation reactions. Central to our approach is the creation of well-defined catalytic interfaces through simple and scalable heterogenization strategies\, enabling the use of green solvents while simultaneously enhancing catalyst reactivity\, robustness\, and long-term stability. These engineered interfaces provide a versatile platform for efficient photo-oxidation under mild and sustainable reaction conditions. \nBeyond catalyst design\, control over interfacial phenomena is extended to the reactor level through the implementation of continuous-flow processing. Flow photoreactors offer precise control over mass and heat transfer\, as well as improved photon management\, allowing these heterogenized systems to operate at significantly higher space–time yields. As a result\, photo-\noxidation reactions can be performed with unprecedented productivity\, reproducibility\, and scalability. \nFinally\, an additional level of control is achieved by tuning the excitation wavelength across the visible spectrum and toward lower-energy photons in the near-infrared (NIR) region. Access to wavelength-selective photoactivation enables new photo-oxygenation pathways and unlocks levels of chemoselectivity that are inaccessible under conventional higher-energy irradiation. Together\, the combined control of catalytic interfaces\, reactor architecture\, and light energy establishes a unified strategy for highly selective and efficient photocatalytic oxidation processes. \nFor key references from our group\, see: a) Amara\, Zimberlin\, Atakpa\, Al Ayi\, Lancel\, ACS Inorg. Org. Chem. Au\, 2026\, 6\, 8–22 ; b) Al Ayi\, Atakpa\, Arab\, Lancel\, Amara\, Eur. J. Org. Chem.\, 2024 e202400634 ; c) Lancel\, Lindgren\, Monnereau\, Amara\, Photochem. Photobiol. Sci. 2023\, 23\, 79-92 ; d) Lancel\, Golisano\, Monnereau\, Gomez\, Port\, Amara\, ACS Sustain. Chem. Eng. 2023\, 11\, 15674–15684 ; e) Lancel\, Zimberlin\, Gomez\, Port\, Khrouz\, Monnereau\, Amara J. Org. Chem. 2023\, 88\, 10\, 6498–6508; f) Terra\, Desgranges\, Amara\, Moores\, Catalysis Today\, 2023\, 407\, 52-58 ; g) Lancel\, Gomez\, Port\, Amara\, Front. Chem. Eng.\, 2021\, 3\, 752364. ; h) Gellé\, Price\, Voisard\, Brodusch\, Gauvin\, Amara\, Moores\, ACS Appl. Mater. Interfaces\, 2021\, 13\, 35606-35616 ; i) Blanchard\, Asbai\, Cottet\, Boissonnat\, Port\, Amara\, Org. Process Res. Dev.\, 2020\, 24\, 822-826 ; j) Tambosco\, Segura\, Seyrig\, Cabrera\, Port\, Ferroud\, Amara\, ACS Catal. 2018\, 8\, 4383-4389 \n_ \nContact : adrien.quintard@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/zacharias-amara-conservatoire-national-des-arts-et-metiers-paris/
LOCATION:DCM – Salle C209\, DCM - Bât Chimie Recherche 301 rue de la Chimie\, St Martin d'Hères\, 38400\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261008T160000
DTEND;TZID=Europe/Paris:20261008T170000
DTSTAMP:20260409T110853Z
CREATED:20260409T110848Z
LAST-MODIFIED:20260409T110853Z
UID:10000124-1791475200-1791478800@sfp-alpes.fr
SUMMARY:Cecile ENGRAND
DESCRIPTION:Les micrométéorites : les messagères de notre origine\n_ \nToutes les informations sont disponibles sur : https://indico.ijclab.in2p3.fr/event/13491/ \nContact : louis.fayard@IJCLAB.INP3.FR \n  \n 
URL:https://sfp-alpes.fr/event/cecile-engrand/
LOCATION:Laboratoire IJCLab – Auditorium Pierre Lehmann\, Rue Ampère\, Orsay cedex\, 91898\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261013T140000
DTEND;TZID=Europe/Paris:20261013T150000
DTSTAMP:20260918T144108Z
CREATED:20260918T143923Z
LAST-MODIFIED:20260918T144108Z
UID:10000265-1791900000-1791903600@sfp-alpes.fr
SUMMARY:Chung-Hou CHUNG (1 Department of Electrophysics\, National Yang Ming Chiao Tung University\, Hsinchu\, Taiwan -  2 Physics Division\, National center for Theoretical Sciences\, Taipei\,Taiwan)
DESCRIPTION:A theory for quantum-critical Planckian strange metal phase in high-Tc cuprate superconductors\nRésumé : \nThe strange metallic state showing incoherent charge transport with universal linear-in-temperature scattering rate: 1/τ = αP kB T / ħ with αP ~ 1 and logarithmic-in-temperature singular specific heat coefficient\, so-called “Planckian metal”\, has been observed in various high-Tc cuprate superconductors over a finite range in doping near optimal doping [1]. Understanding this state is believed to be the key to revealing the mechanism for high-Tc superconductivity. Here\, we propose a generic microscopic mechanism for this state based on quantum-critical local bosonic charge Kondo fluctuations coupled to both spinon and a heavy conduction-electron Fermi surfaces within the heavy-fermion formulated slave-boson t-J model [2]. Our theory is motivated by the striking similarity in strange metal phenomenology between cuprates and heavy-fermion Kondo lattice systems [3]. By a controlled perturbative renormalization group analysis of our effective heavy-fermion model\, we examine the competition between the pseudogap phase\, characterized by Anderson’s Resonating-Valence-Bond spin-liquid made of fermionic spin-singlet spinons\, and the Fermi-liquid state modeled by coherent electron hopping (charge Kondo hybridization). We find an extended quantum-critical metallic phase with a universal Planckian ħω/kBT scaling in scattering rate near a localized-delocalized (pseudogap-to-Fermi liquid) charge-Kondo breakdown transition of the model. The d-wave superconducting ground state emerges near the transition. Unprecedented qualitative and quantitative agreements are reached between our theoretical predictions and various experiments\, including ħω/kBT scaling in optical conductivity [4]\, universal doping-insensitive field-to-temperature (B/T-) scaling in magnetoresistance [5]\, singular specific heat coefficient [6]\, marginal Fermi-liquid spectral function observed in ARPES [7]\, and Fermi surface reconstruction observed in Hall coefficients in various overdoped cuprates [5\,8]. We further applied this framework to obtain a universal quantum-critical B/T-scaling in magneto-transport and unify the B-linear and T-linear Planckian scattering rate observed in LSCO over an extended doping range\, pointing toward a unified quantum–critical origin of Planckian transport in cuprates [9]. This universal Planckian metal phase can be realized within a solvable large-N multi-channel Kondo lattice model generalized from this heavy-fermion formulated tJ model [10]. Our mechanism offers a microscopic understanding of the quantum-critical Planckian metal phase observed in cuprates and its link to the pseudogap\, d-wave superconducting\, and Fermi liquid phases. It offers a promising route for understanding how d-wave superconductivity emerges from such a strange metal phase in cuprates–one of the long-standing open problems in condensed matter physics since 1990s. \nReferences  \n\nLegros et al.\, Nat. Phys. 15\, 142 (2019).\nA mechanism for quantum-critical Planckian metal phase in high-temperature cuprate superconductors\, YY Chang\, K Van Nguyen\, K Remund\, C.H. Chung*\, Reports on Progress in Physics\, 88\, 048001 (2025).\nThe scaled-invariant Planckian metal and quantum criticality in Ce1-xNdxCoIn5\, Yung-Yeh Chang\, Hechang Lei\, Cedomir Petrovic*\, Chung-Hou Chung*\, Nature Communications 14 (581) (2023); A mechanism for the strange metal phase in rare-earth intermetallic compounds”\, Jiangfan Wang\, Yung-Yeh Chang and Chung-Hou Chung*\, Proceedings of the National Academy of Sciences (PNAS)\, Volume 119(10) e2116980119 March 1\, 2022; Strange superconductivity near an antiferromagnetic heavy fermion quantum critical point\, Y. Y. Chang\, F. Hsu\, S. Kirchner\, C. Y. Mou\, T. K. Lee\, C. H. Chung*\, Phys. Rev. B 99\, 094513 (2019); Mechanism of a strange metal state near a heavy-fermion quantum critical point\, Yung-Yeh Chang\, Silke Paschen\, Chung-Hou Chung*\, Phys. Rev. B 97\, 035156 (2018).\nB. Michon et al.\, Nature Communications 14\, 3033 (2023).\nJ. Ayres et al.\, Nature 595\, 661 (2021).\nB. Michon et al.\, Nature 567\, 218 (2019).\nS.D. Chen et al.\, Science\, 366\, 1099 (2019).\nC. Proust et al.\, Annual Review of Condensed Matter Physics 10\, 409 (2019).\nUniversality of T –linear and B–linear Planckian scattering rate in high–Tc cuprate superconductors\, K. Remund\, K. V. Nguyen\, P.-H. Chou\, P. Giraldo-Gallo\, J. A. Galvis\, G. S. Boebinger\, and C.-H. Chung*\, arXiv:2602.10627.\nTheory of universal Planckian metal phase in t-J model: application for high-temperature cuprate superconductors\, YY Chang\, K Van Nguyen\, K Remund\, CH Chung*\, arXiv:2506.15552\n\n_ \nContact : david.leboeuf@lncmi.cnrs.fr
URL:https://sfp-alpes.fr/event/chung-hou-chung-1-department-of-electrophysics-national-yang-ming-chiao-tung-university-hsinchu-taiwan-2-physics-division-national-center-for-theoretical-sciences-taipeitaiwan/
LOCATION:CNRS – Salle René Pauthenet (J229)\, CNRS – LNCMI\, 25 avenue des Martyrs\, Grenoble\, 38000\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261015T140000
DTEND;TZID=Europe/Paris:20261015T150000
DTSTAMP:20260911T130347Z
CREATED:20260911T130150Z
LAST-MODIFIED:20260911T130347Z
UID:10000251-1792072800-1792076400@sfp-alpes.fr
SUMMARY:Elise DUMONT (Institut de Chimie de Nice\, Université Côte d’Azur)
DESCRIPTION:Modeling the dynamics of DNA (photo)lesions: from reactivity to repair\nRésumé : \nFormation and repair of DNA lesions embrace a rich and combinatorial chemistry\, where atomic-scale simulations are increasingly helpful to complement and extent experimental evidences. \nThe modeling of DNA structure\, dynamics\, and (photo)chemistry has benefited from a series of recent methodological developments that now allow\, for instance capturing DNA-photosensitizers interactions\, probing new excited-state mechanisms for DNA lesions induction or photostability [1]\, and rationalize the photochemistry or photocatalytic properties of drugs within DNA owing to hybrid QM/MM-MD schemes. \nI will present a series of examples where computational approaches can palliate\, at least partly\, the absence of NMR\, FRET or X-ray data for damaged DNA oligonucleotides\, DNA-drug\nbinding modes or even DNA-proteins interactions at the nucleosomal scale [2\,3]. I will also situate DNA-ligand interactions\, which can be helpful for the design of next-generation G-\nquadruplex-specific photosensitizers [4] or new DNA-inspired photocatalysts [5]. \n[1] A. Frances-Monerris\, H. Gattuso\, D. Roca-Sanjuan\, I. Tunon\, M. Marazzi\, E. Dumont\, A. Monari\, Chem. Sci.\, 2018\, 9:7902-7911\n[2] E. Matouskova\, E. Bignon\, V. E. P. Claerbout\, T. Drsata\, N. Gillet\, A. Monari. E. Dumont\, F. Lankas\, J. Chem. Theory. Comput.\, 2020\, 16(9):5972-5981\n[3] T. Wen\, M. Kermarrec\, E. Dumont\, N. Gillet\, M. M. Greenberg\, J. Am. Chem. Soc.\, 2023\, 145(43):23702-23714\n[4] M. Deiana et al.\, Nucl. Acids. Res.\, 2023\, 51(12):6264-6285\n[5] Z. Pastorel\, J. Zani\, M. Noël\, A. Bartocci\, S. Arseniyadis\, E. Dumont\, Y. Canac\, O. Baslé\, M. Smietana\, Nat. Comm.\, 2026\, 17:7527 \n_ \nContact : anne.milet@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/elise-dumont-institut-de-chimie-de-nice-universite-cote-dazur/
LOCATION:DCM – Salle C209\, DCM - Bât Chimie Recherche 301 rue de la Chimie\, St Martin d'Hères\, 38400\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261015T160000
DTEND;TZID=Europe/Paris:20261015T170000
DTSTAMP:20260409T111459Z
CREATED:20260409T111456Z
LAST-MODIFIED:20260409T111459Z
UID:10000125-1792080000-1792083600@sfp-alpes.fr
SUMMARY:Christophe SALOMON
DESCRIPTION:Atomes froids et mesure précise du temps\n_ \nToutes les informations sont disponibles sur : https://indico.ijclab.in2p3.fr/event/13426/ \nContact : louis.fayard@IJCLAB.INP3.FR
URL:https://sfp-alpes.fr/event/christophe-salomon/
LOCATION:Laboratoire IJCLab – Auditorium Pierre Lehmann\, Rue Ampère\, Orsay cedex\, 91898\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261016T103000
DTEND;TZID=Europe/Paris:20261016T113000
DTSTAMP:20260918T091036Z
CREATED:20260918T091036Z
LAST-MODIFIED:20260918T091036Z
UID:10000261-1792146600-1792150200@sfp-alpes.fr
SUMMARY:Xavier RIBAS SALAMAÑA (Universitat de Girona)
DESCRIPTION:Supramolecular Nanocages as Masks for Fullerene Regiofunctionalization and Beyond\nRésumé : \nThe design of a confined cavity dictates the type of guest to be encapsulated\, and supramolecular cages are tunable scaffolds that allow the rational design of their cavities. Nowadays\, easily accessible C60 and C70 fullerene mono-adducts are mainly used in any application (1) due to the hampered accessibility to pure alternative fullerene poly-adduct derivatives. In general\, multi-adduct mixtures with uncontrolled regioselectivity (multi-isomers) are obtained\, and chromatographic purification is too costly and time-consuming. Herein\, porphyrin-based supramolecular nanocapsules (2\,3) are used as supramolecular shadow masks to tame the over-reactivity of Bingel-type cyclopropanation reactions and to have full control over the equatorial regioselectivity\nand the number of additions. Furthermore\, the regioselectivity control is finely tuned using a three-shell Matryoshka-like assembly towards synthesizing a single trans-3 bis-Bingel-C60 for the first time (4). Also\, the mask strategy is extended to C60 and C70 for Bingel and Diels-Alder (5\,6). We envision that the described protocol will produce a plethora of derivatives for applications such as solar cells. We will also discuss our recent selective purification of fullertube mixtures and beyond (7\,8). \nReferences :\n1. E. Castro\, L. Echegoyen et al. J. Mater. Chem. C\, 2018\, 6\, 2635.\n2. C. García-Simón\, X. Ribas\, et al. Nat. Commun. 2014\, 5:5557.\n3. C. Fuertes-Espinosa\, X. Ribas\, et al\, Chem 2020\, 6\, 169–186.\n4. E. Ubasart\, X. Ribas\, et al\, Nat. Chem. 2021\, 13\, 420-427.\n5. V. Iannace\, X. Ribas et al\, J. Am. Chem. Soc. 2024\, 146\, 5186−5194.\n6. T. Pèlachs\, X. Ribas et al\, CCS Chem. 2025\, 7\, 703–715\n7. V. Iannace\, X. Ribas et al\, J. Am. Chem. Soc. 2025\, 147\, 36079−36084\n8. V. Iannace\, X. Ribas\, Acc. Chem. Res. 2026\, 59\, 1414−1425 \n_ \nContact : noemie.lalaoui@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/xavier-ribas-salamana-universitat-de-girona/
LOCATION:DCM – Salle C209\, DCM - Bât Chimie Recherche 301 rue de la Chimie\, St Martin d'Hères\, 38400\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261016T111500
DTEND;TZID=Europe/Paris:20261016T121500
DTSTAMP:20260918T092550Z
CREATED:20260918T092501Z
LAST-MODIFIED:20260918T092550Z
UID:10000262-1792149300-1792152900@sfp-alpes.fr
SUMMARY:Gyorgy SZALOKI (Université Paul Sabatier – Toulouse)
DESCRIPTION:Towards confined gold catalysis\nRésumé : \nGold complexes have been the subject of an intense research over the past decade.[1] The main driving force to this interest is to impart new reactivity to these complexes\, that can be leveraged in catalysis. In addition to the widely used ligand engineering strategy\,[2] the concept of confining gold complexes within supramolecular cages has also shown a great\npotential.[3] Toste et coll. have demonstrated\, that small cationic gold complexes (LAu+\, L = Me3P)\, generated within anionic cages show a markedly different reactivity compared to their non-confined analogues. However\, the small cavity size of the cage (251 Å3) has not allowed to extend this concept to larger complexes (L = tBuP\, NHC) and substrates. Indeed\, one obstacle\nto overcome is the synthesis of large anionic cages\, that is far from being straightforward.\nIn order to design and synthesize large anionic cages\, we have implemented a rational approach combining modellizations and cavity size calculations.[4] As a result\, we have prepared an anionic\, cyclotricatechylene based supramolecular cage 1 with a large cavity (558 Å3).[5] Recently\, we have been studying the host-guest chemistry of this cage\, in order to prepare the confined gold-catalyst (Au+@1\, Figure 1). The catalytic activity of Au+@1 is being studied\, with special attention to the synthetically challenging gold catalyzed macrocyclizations. \nFigure 1. Concept: Using the confinement effect to alter the reactivity of gold complexes. \nAcknowledgements\nThe CNRS\, the ANR and the French Ministry of Higher Education and Research is gratefully acknowledged for funding. \nReferences\n[1] L. Rochigiani\, M. Bochmann Chem. Rev. 2021\, 121\, 8364.\n[2] J. Rodriguez\, G. Szalóki\, E. D. Sosa Carizzo\, N. Saffon-Merceron\, K. Miqueu\, D. Bourissou Angew. Chem. Int. Ed.\, 2020\, 59\, 1511;\n(b) G. Szalóki\, J. Babinot\, V. Martin-Diaconescu\, S. Mallet-Ladeira\, Y. Garcia-Rodeja\, K. Miqueu\, D. Bourissou Chem. Sci. 2022\, 13\, 10499.\n[3] M. Morimoto\, S. M. Bierschenk\, K. T. Xia\, R. G. Bergman\, K. N. Raymond\, D. F. Toste Nat. Catal. 2020\, 3\, 969.\n[4] J. V. S. Guerra\, L. F. G. Alves\, D. Bourissou\, P. S. Lopes-de-Oliveira\, G. Szalóki J. Chem. Inf. Model. 2023\, 63\, 3772.\n[5] Y. Diack\, S. Mallet-Ladeira\, D. Lesage\, J. V. S. Guerra\, D. Bourissou\, G. Szalóki Chem. Commun. 2025\, 61\, 8003 \n_ \nContact : noemie.lalaoui@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/gyorgy-szaloki-universite-paul-sabatier-toulouse/
LOCATION:DCM – Salle C209\, DCM - Bât Chimie Recherche 301 rue de la Chimie\, St Martin d'Hères\, 38400\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261026T140000
DTEND;TZID=Europe/Paris:20261026T150000
DTSTAMP:20260911T134555Z
CREATED:20260911T134555Z
LAST-MODIFIED:20260911T134555Z
UID:10000253-1793023200-1793026800@sfp-alpes.fr
SUMMARY:Ramón RIAL (Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS)\, Departamento de Física Aplicada\, Universidade de Santiago de Compostela\, Spain)
DESCRIPTION:Dynamic Supramolecular Eutectogels with Reversible Light Driven Reconfiguration\nRésumé : \nDeep eutectic solvents (DESs) constitute a highly tunable class of liquid media formed by the association of two or more components (e.g.\, a hydrogen-bond donor and an organic salt)\, whose extensive hydrogen bonding interactions result in a pronounced depression of the melting point. Their composition-dependent physicochemical properties make DESs particularly attractive for directing the self-assembly of functional soft materials [1\,2]. In this context\, eutectogels (gels formed within DES media)\, offer a versatile platform in which solvent–solute interactions can be exploited to modulate macroscopic material properties beyond those dictated by the gelator alone [3]. \nHerein\, we report a versatile strategy for the design of light-responsive eutectogels with intrinsically tunable mechanical properties. The approach relies on the supramolecular co-assembly of an amphiphilic component with a rationally designed azobenzene derivative engineered for high solubility in water-free DES media. Through complementary characterization across molecular and mesoscale length scales\, we provided a detailed understanding of the heterotypic interactions underlying the formation of elongated\, one-dimensional supramolecular networks. We further establish that photoisomerization of the azobenzene units induces pronounced rearrangements of these networks\, providing a molecular-level mechanism for controlling the material’s hierarchical organization. \nUpon ultraviolet irradiation\, this molecular reconfiguration leads to an abrupt gel-to-sol transition\, effectively erasing the material’s solid-like mechanical response. Subsequent exposure to visible light reverses the process\, restoring the gel state and recovering a mechanically robust network that remains stable during prolonged storage without appreciable loss of performance. Remarkably\, the optically driven transition is highly reversible and cyclable\, enabling repeated switching between gel and sol states without detectable deterioration of structural integrity or mechanical properties. Collectively\, these results demonstrate how molecular photochemical events can be translated into reversible macroscopic mechanical actuation\, establishing DES-based supramolecular eutectogels as promising platforms for dynamically reconfigurable soft matter. \nReferences :\n[1] Hansen\, B. et al.\, Chem. Rev. 2021\, 101\, 1232-1285.\n[2] P. A. Mercadal\, A. González\, A. Beloqui\, L. C. Tomé\, D. Mecerreyes\, M. Calderón and M. L. Picchio\, JACS Au\, 2024\, 4\, 3744-3758.\n[3] A. Sanchez-Fernandez\, J. F. Poon\, A. E. Leung\, S. F. Prevost and C. Dicko\, ACS Nano\, 2024\, 18\, 18314-18326. \nOrsolya Czakkel (College 9 Secretary) \nExternal visitors may ask for a site access to : tellier@ill.fr \nZoom link : https://ill.zoom.us/j/93326326401?pwd=mq7JqMLctpkqw7hIcPWTq6QGt8nGOg.1 – Password : SeminarC3 \n 
URL:https://sfp-alpes.fr/event/ramon-rial-centro-singular-de-investigacion-en-quimica-bioloxica-e-materiais-moleculares-ciqus-departamento-de-fisica-aplicada-universidade-de-santiago-de-compostela-spain/
LOCATION:ILL – Salle de Séminaire (110-111)\, ILL 50 71 avenue des Martyrs\, Grenoble\, 38042\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261105T160000
DTEND;TZID=Europe/Paris:20261105T170000
DTSTAMP:20260723T165405Z
CREATED:20260723T163914Z
LAST-MODIFIED:20260723T165405Z
UID:10000219-1793894400-1793898000@sfp-alpes.fr
SUMMARY:Guillaume HEBRARD
DESCRIPTION:Extraordinaires planètes extrasolaires\n_ \nToutes les informations sont disponibles sur : https://indico.ijclab.in2p3.fr/event/13798/ \nContact : louis.fayard@IJCLAB.INP3.FR
URL:https://sfp-alpes.fr/event/guillaume-hebrard/
LOCATION:Laboratoire IJCLab – Auditorium Pierre Lehmann\, Rue Ampère\, Orsay cedex\, 91898\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20261216T123000
DTEND;TZID=Europe/Paris:20261216T133000
DTSTAMP:20260723T165459Z
CREATED:20260723T165117Z
LAST-MODIFIED:20260723T165459Z
UID:10000220-1797424200-1797427800@sfp-alpes.fr
SUMMARY:Roland LEHOUCQ
DESCRIPTION:Science-fiction : le monde de la (dé)mesure\n_ \nToutes les informations sont disponibles sur : https://indico.ijclab.in2p3.fr/event/13626/ \nContact : louis.fayard@IJCLAB.INP3.FR
URL:https://sfp-alpes.fr/event/roland-lehoucq/
LOCATION:Université Paris-Saclay – Bâtiment 625 (Hbar) – Amphi A1\, Rue Joliot Curie\, Orsay\, 91400\, France
CATEGORIES:Séminaire
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20270114T160000
DTEND;TZID=Europe/Paris:20270114T170000
DTSTAMP:20260723T165928Z
CREATED:20260723T165928Z
LAST-MODIFIED:20260723T165928Z
UID:10000221-1799942400-1799946000@sfp-alpes.fr
SUMMARY:Emilia ROBIN
DESCRIPTION:Comment on a construit Orsay\n_ \nToutes les informations sont disponibles sur : https://indico.ijclab.in2p3.fr/event/13925/ \nContact : louis.fayard@IJCLAB.INP3.FR
URL:https://sfp-alpes.fr/event/emilia-robin/
LOCATION:Laboratoire IJCLab – Auditorium Pierre Lehmann\, Rue Ampère\, Orsay cedex\, 91898\, France
CATEGORIES:Séminaire
END:VEVENT
END:VCALENDAR