Propriétés Optiques et Magnétiques des Architectures Moléculaires | POMAM

CHOUA Sylvie
Professeureà l'Unistra

Year of creation of the group - 2007

https://pomam.chimie.unistra.fr/

Le Bel Institute, 5th floor North

STOLL Geneviève
email:  genstoll[at]unistra.fr
Phone: +33 (0)3 68 85 13 64

The team is made up of (bio) physicists, physico-chemists, and organic chemists experimenters whose research topics are:

1. The electronic and magnetic properties of:
   a) molecules and molecular materials (molecular architectures);
   b) nanomaterials of various origin (polymers, thin coasts (layer), etc.);
2. The objects of biological interest (proteins, membrane structures, etc.) with a particular interest in aspects of structural biology.
3. The Quantum information.
4. Involvement of radical-type mechanisms in cutaneous inflammatory and allergic reactions.

• Magnetic properties of nanomaterials
• Molecular electronics
• Biophysics: oxidative stress, structural biology
• Investigating the molecular basis of skin allergy: understanding the radical chemical mechanisms responsible for hapten-protein interactions
• Spin Qubits

¤ Electron Paramagnetic Resonance Spectroscopies
¤ Molecular Orbital Calculation Methods of  Functional Density Type (DFT)
¤ Systems of studies:

• Conjugated systems
• Coordination complexes
• Nanoparticles
• Molecules of biological interest and / or biomimetic.

• Bruker Elexys E580, continuous-wave and pulsed mode: X-band (9.5 GHz) and Q-band (34 GHz) with arbitrary waveform generator (AWG) and pulsed electron–nuclear double resonance (ENDOR).
• Bruker Elexys E580, continuous-wave and pulsed mode: X-band (9.5 GHz), continuous-wave electron–nuclear double resonance (CW-ENDOR) and electron–electron double resonance (DEER).
• Bruker EMX Plus, continuous-wave, X-band (9.5 GHz), Q-band (34 GHz).
• Bruker ESP300, continuous-wave, X-band (9.5 GHz).
• CIQTEK EPR200M, continuous-wave, X-band (9.5 GHz).
• Cavities: QD2/ENDOR with optical window, QT with optical window, MD5 with optical window, MS5, MD4-ENDOR, MS3, TE with optical window / TM / dual / HSW with optical window.
• Cryogenic accessories for operation down to 1.7 K and high-temperature accessories up to 500 K.
• In situ electrochemistry: potentiostat and cells adapted for EPR.
• Accessories for in situ and ex situ optical illumination:
  ▪ In situ and ex situ illumination with AURA light engine (Lumencor®) at: 360, 475, 555, 635, and 730 nm,
  ▪ Oriel Sol-UV solar simulator for ex situ illumination at AM 1.5 (Newport™),
  ▪ Home made ex situ illumination chamber for EPR tubes and capillaries.

The platform is part of the CNRS research infrastructure FR2054 Infranalytics (https://infranalytics.eu/en/). Through this platform, the laboratory responds to requests for analysis and acquisition of advanced EPR spectra. We adapt and optimize custom experiments for various recording supports. For further information, please contact Nolwenn Le Breton, and visit the POMAM laboratory website: https://pomam.chimie.unistra.fr/

email : nlebreton[at]unistra.fr
Phone : +33 (0)3 68 85 16 40

Y. Port-Lougarre, C. Gourlaouen, B. Vileno, E. Giménez-Arnau
Antioxidant activity and skin sensitization of eugenol and isoeugenol: two sides of the same coin?
Chem Res Toxicol, 2023, 36 (11), 1804-1813. DOI: 10.1021/acs.chemrestox.3c00263

B. Vileno, Y. Port-Lougarre, E. Giménez-Arnau
Electron paramagnetic resonance and spin trapping to detect free radicals from sensitizing xenobiotics in contact with the skin: from the molecule to the tissue
Contact Dermatitis2022, 86 (4), 241-253. DOI: 10.1111/cod.14037

E. Di Piazza, C. Boilleau, A. Vacher, K. Merahi, L. Norel, K. Costuas, T. Roisnel, S. Choua, P. Turek, S. Rigaut
Ruthenium carbon-rich group as a redox-switchable metal coupling unit in linear trinuclear complexes
Inorg. Chem., 2017, 56(23), 14540-14555

C. Fliedel, V. Rosa, B. Vileno, N. Parizel, S. Choua, C. Gourlaouen, P. Rosa, P. Turek, P. Braunstein
Zwitterionic Cobalt Complexes with Bis(diphenylphosphino)(N-thioether)amine Assembling Ligands: Structural, EPR, Magnetic, and Computational Studies
Inorg.  Chem.,2016, 55(9), 4183-4198

A. K. Boudalis, G. Rogez,  B. Heinrich,  R. G. Raptis,  P. Turek
Towards ionic liquids with tailored magnetic properties: bmim⁺ salts of ferro- and antiferromagnetic Cu^II₃ triangles
Dalton Trans., 2017,  46, 12263-12273