A highly reactive chemical intermediate stabilised by weak interactions

Researchers at the CEISAM laboratory (CNRS/University of Nantes) and the Interdisciplinary Centre for Nanosciences in Marseille (CINaM, CNRS/Aix-Marseille University) have succeeded in stabilising a highly reactive reaction intermediate using weak intramolecular interactions. Known as the Meisenheimer complex, this negatively charged and highly reactive intermediate has long been recognised by chemists in aromatic nucleophilic substitution reactions....

Clémence Queffelec awarded the ARKEMA Prize from the Academy of Sciences

Clémence Queffelec, Senior Lecturer at Nantes University, at the Laboratory “Chemistry and Interdisciplinarity: Synthesis, Analysis, Modelling” (CEISAM), has been awarded the ARKEMA Prize by the French Academy of Sciences. The prize (€25,000), created in 2021, rewards decisive scientific advances in the development, characterisation, understanding or implementation of sustainable materials, i.e. materials whose life cycle and...

Conference: Christelle HUREAU

Following Lucas DE BIASI’s PhD defense, Christelle HUREAU (LCC, Toulouse) will give a seminar entitled: “Contribution of coordination chemistry to a better understanding of Alzheimer’s disease and to an improved design of drug candidates” on Thursday, November 13, 2025, at 2:00 p.m. in the LS2N auditorium. Christelle Hureau is the head of the “Alzheimer, Amyloids...

Pauline CRETIN: Collaboration US2B / AMaCC platform CEISAM

Pauline CRETIN (US2B; Molecular Engineering and Glycobiology Team) has defended her doctoral thesis entitled “Ecophysiology and importance of non-cyanobacterial marine diazotrophs (NCD)” on Friday, October 24, 2025. During her three years of doctoral research, Pauline studied diazotrophy using a model of non-cyanobacterial diazotrophic (NCD) bacteria. Monitoring of nitrogenase activity was carried out at the CEISAM...

CEISAM at the 2025 Science Festival

From 3rd to 13th October, the 2025 Science Festival took place with the theme ‘Intelligence(s)’ and once again, the CEISAM laboratory was there! Yann Pellegrin, accompanied by other members of the laboratory, ran a chemistry stand at the Science Village, focusing on silly mistakes in chemistry. They also visited the paediatric ward at Nantes University...

Tribute to Jean-Nicolas DUMEZ

It is with great sadness that we learned of the passing of Jean-Nicolas Dumez on August 18, 2025. Aged 41, he had been a researcher at the CNRS since 2013 and joined CEISAM five years later. Jean-Nicolas Dumez, studented at the ENS in Lyon from 2004 to 2008 and got the « agrégation » physical sciences, before...

PhD Defense : Federico ZIZZI

Federico ZIZZI, PhD student in CEISAM IMF team, will defend his thesis in english entitled « Tuning the Internal Structuration of Photoactive Organic Nanoparticles for Improved Photoswitching at the Nanoscale » December 10th 2025 at 1:45 pm in CEISAM’s conference room « Marie Curie ».

Label « CNRS Platform » for CHEM-Symbiose platform

The CHEM-Symbiose platform is dedicated to the custom synthesis of small molecules. Since 2013, CHEM-Symbiose has applied its expertise for numerous academic partners through two main activities : service offers and research collaborations. Based in the CEISAM laboratory (UMR6230) at Nantes University, CHEM-Symbiose is labeled by IBiSA (Scientific Interest Group), the Biogenouest platform network, and...

Conference : Emmanuel MAISONHAUTE

On the occasion of Arthur LANGLARD PhD thesis defense, a lecture will be given at CEISAM in the Marie Curie room at 10 am on Wednesday, October 15 by Professor Emmanuel Maisonhaute from Institut Parisien de Chimie Moléculaire (IPCM) at Sorbonne Université (Paris). Prof. E. Maisonhaute is an electrochemist, expert in ultrafast electron transfer mechanisms in...

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