Infos Lab' mai 2026
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Evénement - Chimie au féminin (SCF) - 26 mars 2026 à Paris

Evénement - Chimie au féminin (SCF) - 26 mars 2026 à Paris | Infos Lab' mai 2026 | Scoop.it

La SociĂ©tĂ© Chimique de France organise "Chimie au fĂ©minin" : une matinĂ©e consacrĂ©e Ă  la mise en lumiĂšre de parcours fĂ©minins inspirants dans les sciences chimiques. Cet Ă©vĂ©nement s'inscrit dans une dynamique plus large de valorisation des femmes chimistes, portĂ©e notamment par notre participation au projet des 72 femmes de sciences sur la Tour Eiffel, ainsi que par le numĂ©ro n°512 de l'ActualitĂ© Chimique qui consacrĂ© aux femmes chimistes. 📅 jeudi 26 mars 2026, de 9h Ă  13h 📍Amphithéùtre Charpak – Sorbonne UniversitĂ© – Campus Pierre et Marie Curie, Paris

Pour plus d'informations et pour participer 

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ICP science - Communiqué CNRS : Coup de projecteur sur ces ions invisibles qui empoisonnent la vie des électrocatalyseurs

ICP science - Communiqué CNRS : Coup de projecteur sur ces ions invisibles qui empoisonnent la vie des électrocatalyseurs | Infos Lab' mai 2026 | Scoop.it

Un communiquĂ© de presse des actualitĂ©s scientifiques de l’INC Chimie du CNRS met en avant les travaux de Ba Lich Pham, Alireza Ranjbari, Abderrahmane Tadjeddine, Christophe Humbert, et leurs collaborateurs de l’IUT d’Orsay et du LOMA (UniversitĂ© de Bordeaux), publiĂ©s dans le Journal of the American Chemical Society.

Ces derniers ont levĂ© le voile sur les mĂ©canismes d’empoisonnement des Ă©lectrodes de platine, constitutives des piles Ă  combustible et Ă©lectrolyseurs en milieu aqueux, par les espĂšces anioniques de l’acide phosphorique en fonction du pH de la solution et du potentiel Ă©lectrique appliquĂ©. Cette premiĂšre expĂ©rimentale a Ă©tĂ© rĂ©alisĂ©e en couplant in situ la spectroscopie optique non linĂ©aire par gĂ©nĂ©ration de seconde harmonique (SHG) Ă  l’électrochimie interfaciale.

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Lien vers la publication dans Journal of American Chemical Society ""Adsorption Mechanism of Phosphate Anions at Pt–H2O Electrochemical Interfaces via In Situ SHG Spectroscopy"

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ICP science - Thermal and (photo-)catalytic properties of poly(N-isopropylacrylamide)-stabilised gold nanoparticles induced by radiolysis

ICP science - Thermal and (photo-)catalytic properties of poly(N-isopropylacrylamide)-stabilised gold nanoparticles induced by radiolysis | Infos Lab' mai 2026 | Scoop.it

Tawakalit D. Abdulyekeen, Cécile Sicard-Roselli, Hynd Remita, Isabelle Lampre et leur collÚgue Vincent Huc (ICMMO) ont recemment publié un article dans New Journal of Chemistry "Thermal and (photo-)catalytic properties of poly(N-isopropylacrylamide)-stabilised gold nanoparticles induced by radiolysis"

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Gold nanoparticles (AuNPs) are widely studied due to their unique physicochemical properties, which are highly dependent on their size, shape, and composition. Efficient and environmentally friendly synthesis methods and effective stabilisation agents are essential for fabricating AuNPs with controlled sizes and shapes. This study explores the radiolytic synthesis method, a green synthesis approach using ionising radiation (gamma irradiation), and investigates the use of a thermosensitive polymer, poly(N-isopropylacrylamide) (PNIPAM), and its monomer, N-isopropylacrylamide (NIPAM), for stabilising gold nanoparticles in aqueous solutions. The resulting PNIPAM-AuNPs and NIPAM-AuNPs were spherical, homogenously dispersed, with average sizes of 5.4 nm and 3.5 nm, respectively, and exhibited high stability at room temperature over a long time. Thermal analysis revealed enhanced thermal responsiveness for PNIPAM-AuNPs, an effect not observed with the NIPAM-AuNPs. The AuNPs demonstrated excellent catalytic activity in the reduction of 4-nitrophenol (4-NP) in the presence of sodium borohydride and showed efficient plasmonic photocatalytic activity in the visible-light-driven reduction of 4-nitrothiophenol (4-NTP). These findings support the potential of radiolytically synthesised polymer-stabilised AuNPs for catalysis and environmental remediation applications.

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ICP science - C5H6 formation in Dense Molecular Clouds

ICP science - C5H6 formation in Dense Molecular Clouds | Infos Lab' mai 2026 | Scoop.it

Roland Thissen, Nandana Pattathadathil et Christian Alcaraz et leurs collaborateurs ont récemment publié un article dans Astronomy & Astrophysics "C5H6 formation in Dense Molecular Clouds".

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Les mesures ont été réalisées avec le dispositif CERISES au Synchrotron SOLEIL, ces résultats ont fait l'objet d'une communication sur le site du Synchrotron. Lien vers le communiqué. "How a reactive ion turns small gas molecules into complex organics"

 

Context. Cyclopentadiene (C5H6) has been recognized as a crucial precursor in the formation of nonplanar polycyclic aromatic hydrocarbons (PAHs) and carbon-rich nanostructures in space. Despite its significance and detection in the Taurus Molecular Cloud (TMC-1), the elementary gas-phase reaction pathways leading to cyclopentadiene from acyclic hydrocarbon precursors remain poorly constrained. This gap is emphasized by persistent discrepancies between astrochemical model predictions and the abundances inferred from its radioastronomical detection.

Aims. The aim of this work is to reconcile the chemical network that predicts the formation of C5H6 – a key intermediate in the growth of aromatic species – from gas-phase chemistry with its observed abundance in TMC-1.

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ICP science - Supramolecular Silver Nanoparticle Hydrogels With Controlled Nanoparticle Size and Order: Synthesis Conditions and Possible Mechanism

ICP science - Supramolecular Silver Nanoparticle Hydrogels With Controlled Nanoparticle Size and Order: Synthesis Conditions and Possible Mechanism | Infos Lab' mai 2026 | Scoop.it

Hynd Remita, Isabelle Lampre et leur collaborateurs ont publié récemment un article dans  CHEMNANOMAT "Supramolecular Silver Nanoparticle Hydrogels With Controlled Nanoparticle Size and Order: Synthesis Conditions and Possible Mechanism".

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Nanoparticle (NP)-gel hybrid systems are multifunctional materials combining the properties of metal NPs with the structural versatility of hydrogels. They find application in advanced technologies, including controlled drug delivery, sensing, flexible electronics, and tissue engineering. Incorporation of metal NPs into a gel matrix offers structural confinement and spatial distribution of the NPs, but the control of the size, size distribution, and spatial organization remains a major challenge. In a recent work, we have shown that silver NPs of controlled size (diameter of 28.0 ± 3.6 Å) can form two-dimensional arrays of long-range order coaligned with self-assembled fibers composed of a biobased bolaamphiphile glycolipid containing a single glucose headgroup opposite to a free carboxylic acid end-group. The straightforward self-assembly of the glycolipid with silver ions in water, followed by reduction, generates a silver NP hydrogel with an impressive order of NPs. The synthesis conditions of this process, which offers simplicity and enhanced sustainability are explored here by using and comparing various reduction methods (chemical, photochemical, and radiolytic) as well as by tuning the nature of the silver precursor. This article eventually proposes a mechanism of formation based on the excluded volume of the side-by-side assembly of four glycolipid molecules.

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ICP science - The O•–/electron tandem path for complete mineralization of trifluoroacetate and perfluorocarboxylic acids

ICP science - The O•–/electron tandem path for complete mineralization of trifluoroacetate and perfluorocarboxylic acids | Infos Lab' mai 2026 | Scoop.it

Zhiwen JIANG, Pierre Archirel, Mehran Mostafavi et leurs collaborateurs ont rĂ©cemment publiĂ© un article dans Nature Water "The O‱–/electron tandem path for complete mineralization of trifluoroacetate and perfluorocarboxylic acids". Cette Ă©tude a dĂ©jĂ  Ă©tĂ© relayĂ©e par l’UniversitĂ© Paris-Saclay, CNRS Chimie, L’HumanitĂ© et Les Échos. Contact : Mehran Mostafavi mehran.mostafavi@universite-paris-saclay.fr

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Les PFAS (pour substances per- et polyfluoroalkylĂ©es), Ă©galement appelĂ©es « polluants Ă©ternels », font rĂ©guliĂšrement la une de l’actualitĂ©. Dans la course Ă  la destruction des PFAS, le “maillon faible” reste souvent le mĂȘme : l’acide trifluoroacĂ©tique (TFA), le PFAS le plus court, rĂ©putĂ© quasi-indestructible. Il cristallise aujourd’hui l’enjeu des « polluants Ă©ternels ». Une Ă©tude vient toutefois bousculer les idĂ©es reçues : elle met en lumiĂšre une stratĂ©gie tandem oxydative/rĂ©ductrice (Ox/Red), pilotĂ©e par l’anion radicalaire oxygĂšne O‱– et l’électron hydratĂ©, qui reconfigure en profondeur le paradigme actuel d’activation des PFAS. Dans un milieu aqueux soumis Ă  l’ionisation, le TFA peut ainsi atteindre une minĂ©ralisation quasi complĂšte (≈100 %) Ă  tempĂ©rature ambiante et sans ajout de catalyseur. Ce mĂ©canisme est explicitĂ© par des mesures de radiolyse pulsĂ©e, qui suivent les intermĂ©diaires rĂ©actionnels dans le temps. Les radicaux nuclĂ©ophiles O‱– initient l’oxydation du TFA via une voie inaccessible aux radicaux ‱OH, avec une constante de vitesse nettement plus Ă©levĂ©e (5,1 × 107 M−1 s−1), conduisant Ă  la formation d’un intermĂ©diaire critique, le radical CF3CO32−‱. Les rĂ©actions ultĂ©rieures avec eaq− permettent ensuite une conversion complĂšte en F− et en CO32−. Au-delĂ  du TFA, l’approche permet Ă©galement la minĂ©ralisation d’acides perfluorĂ©s et perhalogĂ©nĂ©s et pourrait ĂȘtre Ă©tendue Ă  des processus tandem radicalaires photo- ou photocatalytiques. Lors de la validation prĂ©-pilote sous un faisceau d’électrons industriel, elle a atteint une vitesse record de dĂ©fluoration de 0,27 M h−1, dĂ©montrant sa compatibilitĂ© directe avec les technologies existantes de traitement de l’eau Ă  haut dĂ©bit. Ces rĂ©sultats, obtenus grĂące Ă  la comprĂ©hension du mĂ©canisme rĂ©actionnel, constituent une avancĂ©e dĂ©cisive pour remĂ©dier aux problĂšmes des PFAS, en remettant en cause l’idĂ©e admise de longue date selon laquelle l’activation des PFAS Ă  chaĂźne courte serait inefficace. 

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ICP science - Unravelling the mysteries behind orcein dye: from orcinol-based synthesis to molecular degradation

ICP science - Unravelling the mysteries behind orcein dye: from orcinol-based synthesis to molecular degradation | Infos Lab' mai 2026 | Scoop.it

Sylvie Héron, Alain Tchapla et leurs collaborateurs du Muséum d'Histoire Naturelle et du Laboratoire de Recherche des Monuments Historiques ont récemment publié un article dans Dyes and Pigments "Unravelling the mysteries behind orcein dye: from orcinol-based synthesis to molecular degradation"

 

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This study aims to identify the various reasons behind the wide range of colours of orchil dye. The first step was to study the impact of synthesis parameters on colour and chemical composition variation, while the second step aimed to study chemical degradation with the artificial ageing protocol.
Variation in reactant concentration, ammonia level and O2 availability led to red-orange or purple-coloured solutions. HPLC-DAD-MS, UV-Vis absorption and reflectance analysis enabled both molecular identification and objective colour characterisation of each solution. Thanks to PLS regression, the contribution of the relative content of each molecule to observed colour of the dye could be determined. Finally, accelerated light-ageing experiments assessed the stability of the synthesised dyes. Molecules responsible for the purple hue (ÎČ- and Îł-orceins) were found to be significantly more sensitive to photodegradation than those associated with red-orange shades (α-orceins).
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ICP science - Experimentally recreated workplace environments contain submicron crystalline silica particles, including ultrafine particles, which have been identified in the mediastinal lymph node...

ICP science - Experimentally recreated workplace environments contain submicron crystalline silica particles, including ultrafine particles, which have been identified in the mediastinal lymph node... | Infos Lab' mai 2026 | Scoop.it

Dominique Bazin et ses collaborateurs ont recemment publié un article dans BMJ  "Experimentally recreated workplace environments contain submicron crystalline silica particles, including ultrafine particles, which have been identified in the mediastinal lymph nodes of construction workers"

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Although ultrafine particles are suspected to contribute significantly to occupational exposure to crystalline silica, they have not yet been definitively identified in workplaces or human tissues.

Particles were generated in three 60-minute tests in a glove box: cutting kerb or granite pavement, drilling solid cinder block. The particle concentrations per cm3 of air in the box and their mean size were analysed online and using transmission electron microscopy and energy dispersive X-ray analysis (EDX). 17 mediastinal lymph node (MLN) samples from construction workers who underwent lung cancer surgery were examined by Fourier transform infrared spectroscopy (FTIR) and 8/17 by scanning electron microscopy (SEM) with EDX analysis.

The particle concentration was high when cutting kerb or granite pavement (10 000–20 000 cm−3 and 50 000–160 000 cm−3, respectively), while below 1000 cm−3 for drilling cinder block. The aerosol consisted mainly of submicron emissions with a nanometric fraction (ie, <100 nm), showing two main modes: 351 nm to 16 nm for kerb, 407 nm to <16 nm for granite pavement and 310 nm to 17 nm for cinder block processing. Ultrafine silica particles were only identified in kerb and granite cutting samples.

Analysis using FTIR revealed an Si signal in 15/17 of the MLN samples and SEM and EDX analysis detected geometric particle deposition with Si spectra, particularly nano-sized particles, in the eight analysed samples.

Ultrafine silica particles are produced in conditions that mimic typical construction work processes, but the quantity produced varies according to the task. Similar characteristics were observed in ultrafine silica particles in both MLN samples and experimental aerosols.

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ICP science - The absolute cross-section of the reactive collision of P + ( 3 P) with D 2 : a combined theoretical and experimental study

ICP science - The absolute cross-section of the reactive collision of P + ( 3 P) with D 2 : a combined theoretical and experimental study | Infos Lab' mai 2026 | Scoop.it

Christian Alcaraz, Roland Thissen et leurs collaborateurs ont récemment publié un article dans Physical Chemistry Chemical Physics "The absolute cross-section of the reactive collision of P + ( 3 P) with D 2 : a combined theoretical and experimental study". Les mesures ont été réalisées au Synchrotron SOLEIL grùce à l'utilisation du dispositif CERISES.

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In this work, we combine theoretical and experimental methods to study the P+(3P) + D2 → PD+ + D reaction. As a result, the absolute cross-section as a function of collision energy is obtained. Experimentally, the cross-section is measured using the guided ion beam technique (GIB), where P+ is produced by VUV photons at the SOLEIL synchrotron using PCl3 as a precursor. Theoretically, the cross-section is calculated from first principles. The potential energy surfaces of the three electronic states correlating with the P+(3P) are constructed by fitting MRCI points, and reaction dynamics are performed on each of them independently, hence neglecting couplings. The total cross-section is then obtained from the weighted contribution of each considered electronic state. Our findings show good agreement between the measured and calculated cross-sections, with a small discrepancy indicating that spin–orbit and non-adiabatic coupling, not considered in this work, may play a role in this reaction. The results hereafter presented demonstrate that the chemistry of the third-row atomic cations with molecular hydrogen is generally unfavoured, unlike their second-row homologues, thus manifesting the existence of boundaries to the applicability of the so-called chemical analogy (i.e., assuming the same chemical behaviour for elements belonging to the same group).

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ICP actualité - Soutenance HDR Marine de Person 

ICP actualité - Soutenance HDR Marine de Person  | Infos Lab' mai 2026 | Scoop.it

Marine de Person du groupe CAPRI a soutenu avec succĂšs son Habilitation Ă  Diriger des Recherches le mardi 5 mai 2026.

 

"Analyse de lipides et substances analogues par chromatographie en phase liquide couplée à la spectrométrie de masse (HPLC-MS/MS)".

 

Félicitations Marine!

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ICP actualité - A Chemist’s Guide to Valence Bond Theory, 2nd Edition (Wiley)

ICP actualité - A Chemist’s Guide to Valence Bond Theory, 2nd Edition (Wiley) | Infos Lab' mai 2026 | Scoop.it

Philippe Hiberty (groupe Theosim) has just published a book entitled “A Chemist’s Guide to Valence Bond Theory, 2nd Edition“.

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This books is primarily aimed at chemists, be they experimentalists, theoreticians and teachers. It explains how to use valence bond (VB) theory to think concisely and rigorously in chemical and photochemical applications and how to use VB computations. It first teaches the basic principles of VB theory such as hybridization, resonance energy and the nature of various types of chemical bonds, and sets bridges to Molecular Orbital theory. In passing, it addresses the alleged failures often associated to VB theory (ground state of dioxygen, hybridization vs. photoelectron spectroscopy, aromaticity, and so on) and shows them to be all mythical. A VB-based reactivity model is presented, allowing one to predict reactions barriers from easily accessible properties of reactants. All these applications include sets of exercises and corresponding answers. On the computational side, the book familiarizes the reader with the various VB-based computational tools and methods available today. The last chapter describes the Breathing-Orbital VB method, originating from the ICP, aimed at providing very compact VB wave functions approaching chemical accuracy by treating dynamic electron correlation in a direct and cost-efficient way.

 

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ICP agenda - PhD Days de l'ICP 

ICP agenda - PhD Days de l'ICP  | Infos Lab' mai 2026 | Scoop.it

Le PhD Day à l'ICP aura lieu le 5 juin 2026.  Au programme (à venir) : communications orales et session poster.

Venez nombreux !

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UPSaclay - la 11ème Journée de l'Ecole Doctorale 2MIB aura lieu le 16 juin 

UPSaclay - la 11ème Journée de l'Ecole Doctorale 2MIB aura lieu le 16 juin  | Infos Lab' mai 2026 | Scoop.it

La onziĂšme JournĂ©e de l'Ecole Doctorale 2MIB aura lieu Ă  partir de 12:45 le mardi 16 juin 2026 Ă  l’ENS Paris-Saclay (Gif-sur-Yvette). AprĂšs une brĂšve introduction proposĂ©e par la Graduate School de Chimie et le directeur de l’Ecole doctorale, GĂ©raldine Masson, de l’ICSN (Institut de Chimie des Substances Naturelles, CNRS), membre du bureau de l’ED 2MIB et mĂ©daille d’argent du CNRS assurera la confĂ©rence plĂ©niĂšre.

Vous serez ensuite invités à assister aux présentations orales proposées par des étudiants des trois pÎles de l'école doctorale (qui se dérouleront en trois sessions parallÚles) :

 

- CIM (Chimie Inorganique et Matériaux)

- COB (Chimie Organique et Biomoléculaire)

- CPBA (Chimie Physique, BioPhysique et Analytique) .

 

Dans l’aprĂšs-midi, d’autres doctorants des trois pĂŽles de l’ED 2MIB prĂ©senteront leurs travaux Ă  l’occasion d’une session posters.

 

Date limite d’inscription pour toute participation simple : 1er juin 

Inscription Ă  l’évĂ©nement

 

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UPSaclay - Conférences et Workshops : IA et pédagogie pour la formation des formateurs

UPSaclay - Conférences et Workshops : IA et pédagogie pour la formation des formateurs | Infos Lab' mai 2026 | Scoop.it

La Graduate School Éducation, Formation, Enseignement (GS EFE) et l'Institut DataIA de l’UniversitĂ© Paris-Saclay, en collaboration avec la DĂ©lĂ©gation RĂ©gionale et AcadĂ©mique du NumĂ©rique Éducatif (DRANE) Île de France, organisent le 17 juin 2026, de 9h Ă  17h au LUMEN une journĂ©e consacrĂ©e Ă  l’IA au service de la formation des formateurs.

DestinĂ© aux enseignants, futurs enseignants et acteurs de la formation (sans prĂ©requis en intelligence artificielle et hors public expert de l’IA) cet Ă©vĂ©nement proposera des Ă©changes et des ateliers autour des usages pĂ©dagogiques de l'IA, de ses enjeux Ă©thiques et de ses impacts sur les pratiques Ă©ducatives.

Le programme complet 

Des ateliers sont prĂ©vus, merci de prĂ©voir de vous munir d’un ordinateur portable.

Inscription gratuite et obligatoire 

Date & horaires : Rendez-vous le 17 juin 2026 de 9h Ă  17h

Lieux : 📍 LUMEN – UniversitĂ© Paris-Saclay - 8 avenue des Sciences, 91190 Gif-sur-Yvette

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UPSaclay - Programme post-doctoral UPSaclay-STAR-φ

UPSaclay - Programme post-doctoral UPSaclay-STAR-φ | Infos Lab' mai 2026 | Scoop.it

La Graduate School de physique de l’UniversitĂ© Paris-Saclay lance un deuxiĂšme appel Ă  candidatures dans le cadre de son programme de bourses postdoctorales : UPSaclay-STAR-φ, soutenu par le programme europĂ©en Marie SkƂodowska-Curie COFUND (appel 2024).

Date limite de candidature : 15 juillet 2026. Début prévu des bourses : début 2027 (flexible jusqu'en octobre 2027). 

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Cet appel permettra de recruter jusqu’à 22 chercheurs postdoctoraux internationaux pour des projets de recherche de 24 mois au sein de l’un des 40 laboratoires de la Graduate School, au synchrotron SOLEIL ou au Laboratoire national de mĂ©trologie (LNE). Les candidats devront proposer un projet de recherche original, en lien avec les vastes domaines d'expertise de la Graduate School et de ses partenaires, allant de la physique fondamentale Ă  la physique appliquĂ©e.

 

 

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UPSaclay - Appel à projets prématuration des Graduate Schools et Institut dans le cadre de A2-LINE.

UPSaclay - Appel à projets prématuration des Graduate Schools et Institut dans le cadre de A2-LINE. | Infos Lab' mai 2026 | Scoop.it

L’AAP PREMATURATION GS/I a pour objectif de soutenir financiĂšrement et d’accompagner les projets Ă  trĂšs bas niveau de maturitĂ© technologique et Ă  fort potentiel innovant, portĂ©s par des chercheurs, chercheuses, enseignants-chercheurs, enseignantes chercheuses, ingĂ©nieurs ou ingĂ©nieures, relevant des 235 laboratoires des 18 Graduate Schools et Institut. Co-financĂ©s par la RĂ©gion Ile-de-France dans le cadre du Fonds europĂ©en de dĂ©veloppement rĂ©gional (FEDER) au travers du projet A2-LINE, les projets laurĂ©ats devront s'inscrire dans les Domaines d’Innovation StratĂ©giques de la RĂ©gion Île-de-France et bĂ©nĂ©ficieront du financement d'un an de salaire d’ingĂ©nieur ou post-doctorant.

En amont de leur candidature, les porteuses et porteurs de projets sont invité·es à contacter leur Graduate School ou Institut (pour assurer la validation du financement) ainsi que la structure de valorisation de leur établissement tutelle gestionnaire. Le dossier de candidature est à déposer sur la plateforme dédiée avant le 9 Juin 2026 à 12h.

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Evénement - 5ème édition de l'école d'été "Physico-chimie et problématiques sociétales contemporaines"  de la fédération de Chimie-Physique de Paris-Saclay (CPPS)

Evénement - 5ème édition de l'école d'été "Physico-chimie et problématiques sociétales contemporaines"  de la fédération de Chimie-Physique de Paris-Saclay (CPPS) | Infos Lab' mai 2026 | Scoop.it

La 5Ăšme Ă©dition de l'Ă©cole d'Ă©tĂ© "Physico-chimie et problĂ©matiques sociĂ©tales contemporaines"  de la fĂ©dĂ©ration de Chimie-Physique de Paris-Saclay (CPPS) se tiendra du 29 juin (14h) au 3 juillet (16h) sur le campus de l’UniversitĂ© Paris-Saclay. Cette Ă©cole s'adresse plus particuliĂšrement aux Ă©tudiants de L2 au M2 (magistĂšre ou non), souhaitant nourrir leur rĂ©flexion sur leur futur parcours ou dĂ©couvrir les thĂ©matiques dĂ©veloppĂ©es Ă  Paris-Saclay Ă  l'interface de la Chimie et de la Physique.

 

L’objectif est de prĂ©senter les grands enjeux sociĂ©taux oĂč la Chimie-Physique joue un rĂŽle clĂ©. Le programme s'articule autour de cinq thĂ©matiques majeures (une par jour), explorĂ©es Ă  travers de petits cours/prĂ©sentations, des visites d'installations expĂ©rimentales et des travaux pratiques :

Biomolécules : Comprendre la relation structure-activité de molécules biologiques pour le design de nouveaux médicaments ou la photostabilité des molécules du vivant.

Astrophysique & Astrochimie : Étudier la matiùre interstellaire.

Patrimoine & Archéologie : Utiliser les techniques analytiques pour documenter l'histoire et créer les matériaux durables, paléo-inspirés, de demain.

MĂ©thodes biophysiques et biochimiques pour la santĂ© & l’environnement : Allier approches expĂ©rimentales et thĂ©oriques complĂ©mentaires pour optimiser les outils molĂ©culaires nĂ©cessaires Ă  la comprĂ©hension de la machinerie cellulaire ou la dĂ©tection de polluants.

Technologies quantiques : MaĂźtriser les processus molĂ©culaires par lasers ultrarapides pour une chimie plus efficace. Cette Ă©cole vous permettra de dĂ©couvrir des approches de pointe telles que les  spectroscopies laser (femtoseconde/attoseconde), la spectromĂ©trie de masse, la RMN, la microscopie AFM couplĂ©e Ă  l’IR et la modĂ©lisation numĂ©rique.

 

Informations pratiques :

Frais : L'inscription est totalement gratuite.

Repas : Les déjeuners (du mardi au vendredi) sont offerts par la Fédération CPPS.

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Stage : Si vous ĂȘtes en stage durant cette pĂ©riode, n'oubliez pas d'en informer votre responsable afin d'effectuer, si nĂ©cessaire, un avenant Ă  votre convention.

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May 21, 10:54 AM
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Evènement - Une 1/2 journée scientifique ChemoSensium le 1er juillet au Lumen

Evènement - Une 1/2 journée scientifique ChemoSensium le 1er juillet au Lumen | Infos Lab' mai 2026 | Scoop.it

Pour mettre en place le rĂ©seau ChemoSensium au sein des Ă©quipes de Paris-Saclay, les Graduate Schools Chimie et HeaDS organisent une demi journĂ©e scientifique sur les thĂ©matiques de ChemoSensium le mercredi 1er juillet 2026, au Lumen (8 avenue des sciences). L'Ă©vĂšnement dĂ©butera Ă  midi par un cocktail sensoriel dĂ©jeunatoire, il sera suivi par quatre interventions et des animations autour du goĂ»t et de l’odorat. 

L’inscription est gratuite avec rĂ©servation obligatoire avant le 24 juin

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May 22, 3:57 AM
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Evènement - Colloque CNRS « Santé-environnement : comprendre, prévenir, agir »  les 9 et 10 juillet 2026

Evènement - Colloque CNRS « Santé-environnement : comprendre, prévenir, agir »  les 9 et 10 juillet 2026 | Infos Lab' mai 2026 | Scoop.it

Le comitĂ© scientifique santĂ© du CNRS a le plaisir de vous convier au Colloque « SantĂ©-environnement : comprendre, prĂ©venir, agir 2026 - MITI" qui se tiendra les 9 et 10 juillet 2026 au siĂšge du CNRS. N’hĂ©sitez pas Ă  vous inscrire, ce colloque est ouvert Ă  tout le monde ! Ce colloque comporte Ă©galement un volet prospectif, prĂ©parĂ© en amont et poursuivi pendant le colloque sous forme d’ateliers. Ce volet a pour but d’identifier collectivement les prioritĂ©s scientifiques et les dispositifs structurants nĂ©cessaires au dĂ©veloppement de la recherche Ă  l’interface santé–environnement pour les annĂ©es Ă  venir. Les contributions alimenteront des fiches prospectives CNRS en santĂ© environnement, en appui aux stratĂ©gies et aux travaux du comitĂ© scientifique santĂ© du CNRS et de ses instituts. Dans ce cadre, un questionnaire court est diffusĂ© afin de recueillir vos avis. Nous vous remercions par avance pour votre participation Ă  cette rĂ©flexion collective d’ici le 31 mai 2026 (5-10 min, 6 questions) : Questionnaire

Programme et inscription 

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May 21, 11:15 AM
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Prix - Call for Nomination 2027 L’Oréal-UNESCO For Women in Science International Awards

Prix - Call for Nomination 2027 L’Oréal-UNESCO For Women in Science International Awards | Infos Lab' mai 2026 | Scoop.it

The Call for Nomination 2027 L’OrĂ©al-UNESCO For Women in Science International Awards is now open.   The 2027 Awards will designate five outstanding researchers in Physics, Mathematics, Computer and Information Sciences, Chemistry, Earth & Related Environmental Sciences. 

Link to the website

Call for application/nomination from April 6 to June 30 2026.

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May 21, 7:13 AM
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Infos Lab' mars 2025

    

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March 12, 3:22 AM
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ICP science - Radiolytic synthesis of rGO–PEDOT nanohybrids with enhanced functional properties 

ICP science - Radiolytic synthesis of rGO–PEDOT nanohybrids with enhanced functional properties  | Infos Lab' mai 2026 | Scoop.it

Souad Abou Zeid, Liran Hu, Samy Remita et leurs collaborateurs ont rĂ©cemment publiĂ© un article dans Materials Chemistry Frontiers "Radiolytic synthesis of rGO–PEDOT nanohybrids with enhanced functional properties"

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Hybrid reduced graphene oxide–poly(3,4-ethylenedioxythiophene) (rGO–PEDOT) nanocomposites were synthesized via green gamma-radiolysis under ambient conditions, without dopants or catalysts. Three distinct synthesis routes—including one-step simultaneous radiation induced reduction of aqueous graphene oxide (GO) and EDOT monomers and two-step approaches involving the reduction of GO in the presence of pre-formed PEDOT oligomers or polymers—were explored to assess the impact of absorbed dose and polymerization stage on the physicochemical and functional properties of the resulting materials. Extensive characterization techniques revealed that gamma-irradiation promotes effective GO reduction and controlled PEDOT polymerization, leading to significant band gap narrowing, enhanced structural ordering, and substantial increase in the carbon-to-oxygen atomic ratio (from 3.7 to 9.3) indicative of effective reduction and improved conjugation within the nanocomposites. Visual evolution confirmed kinetic-controlled composite formation, yielding hydrogel-like aggregates. Morphological analyses showed well-dispersed PEDOT on rGO sheets, contributing to improved thermal stability, enhanced optoelectronic properties and superior electrochemical performance. The composites exhibited enhanced specific capacitances up to ∌248 F g−1, surpassing many reported PEDOT-based materials, attributed to the synergistic combination of rGO's conductive network and PEDOT's pseudocapacitance. This green, catalyst-free, and scalable methodology offers a promising platform for fabricating multifunctional hybrid materials with potential applications in flexible electronics, energy storage devices, and sensing technologies.

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March 12, 3:15 AM
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ICP science - Modeling the Vibrational Circular Dichroism Spectroscopy of Phenylcyclohexanediol Solvated in Dimethyl Sulfoxide Using Polarizable Molecular Dynamics

ICP science - Modeling the Vibrational Circular Dichroism Spectroscopy of Phenylcyclohexanediol Solvated in Dimethyl Sulfoxide Using Polarizable Molecular Dynamics | Infos Lab' mai 2026 | Scoop.it

Emeline Boyer, Carine Clavaguéra et leurs collaborateurs viennent de publier un article dans The Journal of Physical Chemistry B "Modeling the Vibrational Circular Dichroism Spectroscopy of Phenylcyclohexanediol Solvated in Dimethyl Sulfoxide Using Polarizable Molecular Dynamics". Ce travail se place dans le cadre du projet ANR Dichrosol (ISMO, ICP, LIPhy, CPCV).

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Modeling vibrational circular dichroism (VCD) spectra in solution remains a complex task due to the intricate interactions involved. Recent advances in computational chemistry, particularly the implementation of polarizable force fields, have greatly improved the description of environmental effects in classical molecular dynamics simulations. In this study, we use the AMOEBA polarizable model to calculate VCD spectra through the expression of the electric and magnetic dipole moments developed recently [Bowles, J. . ChemPhysChem 2024, 25, e202300982.] in combination with the use of induced dipole models. This methodology enables the reliable treatment of flexible molecules and has been applied to the 1-Phenyl-1,2-Cyclohexanediol (PC) molecule solvated in dimethyl sulfoxide (DMSO). The computed infrared and VCD spectra provide detailed insights into molecular conformations and solute–solvent interactions. An in-depth investigation was conducted into the possible effects of system size, concentration, and spectral convergence. Comparison with experimental vibrational frequencies in deuterated solvent further supports the interpretation of spectral features, although residual differences in the spectral shifts and broadenings prove to be challenging for theory, especially in the case of VCD.

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March 12, 3:41 AM
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ICP science - Ion induced formation of complex organic nitrogen molecules in solid-phase adenine

ICP science - Ion induced formation of complex organic nitrogen molecules in solid-phase adenine | Infos Lab' mai 2026 | Scoop.it

Roland Thissen et ses collaborateurs ont récemment publié un article dans Icarus "Ion induced formation of complex organic nitrogen molecules in solid-phase adenine"

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Complex organic molecules have been found in many space environments like meteorites and comets. There, they are subjected to various forms of radiation (photons, electrons, ions), opening the question of their behavior and chemical evolution, which may have played a crucial role in chemical processes of astrobiological interest. In this study, we investigate the irradiation of adenine (CHN) with oxygen and neon ions. The free parameters of the experiments include varying energies (30-70 keV), temperatures (150, 300 K), sample thicknesses (138-554 nm), and ion fluences (0.69-5  10 ions cm). In situ IR spectroscopy reveals the appearance of CN and N=C=N bands indicating the formation of new species. Ex situ ultra-high-resolution mass spectrometry shows the formation of new complex organic molecules that far exceed the molecular mass of adenine. These macromolecules show great chemical diversity and can be expressed as (HCN)R families, where z can reach 14 and R can be C, H, N, NH, CH or CN. In total, nearly 100 individual families have been identified, 28 of which can be found in every irradiated sample. Their aromaticity equivalent is higher than that in other N-rich samples such as Titan tholins and HCN-polymers, corresponding to polycyclic aromatic nitrogen-bearing hydrocarbons. The high amount of nitrogen in these molecules indicates a very efficient incorporation of nitrogen in the solid phase during the irradiation of adenine. The ease with which complex organic matter forms through irradiation highlights the relevance of these species in space environments.

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March 12, 3:29 AM
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ICP science - Gamma-induced one-step synthesis of reduced graphene oxide–silver nanoparticles with enhanced properties

ICP science - Gamma-induced one-step synthesis of reduced graphene oxide–silver nanoparticles with enhanced properties | Infos Lab' mai 2026 | Scoop.it

Souad Abou Zeid, Liran Hu, Samy Remita et leurs collaborateurs ont publiĂ© un article dans Materials Chemistry Frontiers "Gamma-induced one-step synthesis of reduced graphene oxide–silver nanoparticles with enhanced properties".

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This study presents a novel gamma-induced one-pot synthesis of reduced graphene oxide–silver nanoparticle (rGO–Ag NPs) nanocomposites. Syntheses were conducted in a deoxygenated aqueous medium containing 0.2 g L−1 graphene oxide (GO), silver ions (10−3 or 10−2 mol L−1), and 0.2 mol L−1 isopropanol at ambient temperature and pressure. Multi-technique characterization confirmed the reduction of GO and silver ions, forming nanocomposites with significantly improved physicochemical and electrochemical properties compared to pristine GO, rGO alone, and rGO–Ag NPs prepared by other methods. UV-Vis absorption spectroscopy revealed tunable optical properties, while UPS measurements provided insights into the energy band structure, highlighting interactions between rGO and Ag NPs that enhance electronic properties. XPS and ATR-FTIR confirmed the successful reduction processes. SEM–EDX analyses demonstrated uniform silver nanoparticle distribution on rGO sheets. The C/O ratio significantly increased after irradiation, with values of 10.8 and 9.6 for composites synthesized with 10−3 and 10−2 mol L−1 in silver ions, respectively, compared to 11.2 for rGO alone. Raman spectroscopy showed a lower intensity ratio (ID/IG) between D and G bands (1.18 for nanocomposites vs. 1.40 for rGO), indicating fewer structural defects. Improved thermal stability was evidenced by reduced weight loss (10%) at 300–800 °C. Electrochemical studies revealed exceptional specific capacitance values of 218 F g−1 (10−3 mol L−1 Ag+ at 50 kGy) and 298 F g−1 (10−2 mol L−1 Ag+ at 70 kGy), surpassing the 125.4 F g−1 for rGO alone. These findings highlight the potential of gamma-induced synthesis for producing rGO–Ag NPs nanocomposites for high-performance supercapacitor applications.

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March 12, 3:36 AM
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ICP science - Elaboration of novel biocomposite hydrogel polymers made of alginate and sepiolite and endowed with enhanced properties

ICP science - Elaboration of novel biocomposite hydrogel polymers made of alginate and sepiolite and endowed with enhanced properties | Infos Lab' mai 2026 | Scoop.it

Meriem Baziz, Liran Hu, Samy Remita et leurs collaborateurs ont publié un article dans Polmer Bulletin : "Elaboration of Novel Biocomposite Hydrogel Polymers made of Alginate and Sepiolite and endowed with Enhanced Properties"

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Nowadays growing attention is given to the design and development of novel interpenetrating polymer networks (IPN) from the combination of hydrogel polymers loaded with natural clay. In this work, we used the eco-friendly IPN strategy to develop novel hydrogel biocomposite beads, made of alginate (ALG), with improved clay dispersion, higher pH sensitivity, better stretchability and swellability, together with enhanced regenerability properties and delayed biodegradability. Fibrous clay, namely, sodium sepiolite (NaS), was loaded into alginate simple biocomposite network (SBN) beads, via manual co-grinding mixture/encapsulation method, at different sepiolite loads. Alginate double biocomposite network (DBN) beads were also prepared at different sepiolite loads, via the diffusion of acrylamide monomers (AAM) inside alginate single biocomposite network (SBN) beads, followed by external and in situ free radical polymerization of AAM into polyacrylamide (pAAM), using ammonium persulfate (APS) as polymerization initiator and N,N-methylenebisacrylamide (Bis) as covalent crosslinker agent. The as-elaborated SBN and DBN beads were then characterized by digital camera recording, XRD analysis, ATR-FTIR characterization and SEM observation. FTIR results showed that NaS and pAAM were successfully incorporated into DBN beads, while partially exfoliated morphology was obtained with XRD analysis, which revealed the enhancement of fibrous clay dispersion, even at relatively high sepiolite loads. Besides, SEM microscopy confirmed the porous spongious nature of DBN beads. The properties of the as-elaborated SBN and DBN beads were also evaluated by test touching, swelling rate measurements, adsorption/desorption experiments and biodegradability evaluation. DBN beads properties were always found enhanced in comparison with those of SBN beads. This suggests that the synergetic effect between IPN and biocomposite structure improves the stretchability of the DBN beads, their stability in water whatever the pH and their swelling behavior (up to 2000 g/g adsorbed water after 110 min, which was nevertheless found dependent on the pH and on sepiolite load). Moreover, DBN beads displayed enhanced adsorption/desorption properties toward methylene blue (MB) dye (no reduction in MB adsorption capacity after 5 cycles), very good regenerability (ethanol being used as effective eluting agent) and delayed biodegradability (complete degradation only after 8 days in the presence of sepiolite). In summary, this work showed an interesting and safe IPN/biocomposite approach to develop high-performance alginate biocomposite polymers as a promising system toward their use in eco-friendly processes. 

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