​​The PEPR LUMA research programme develops light-matter interactions, particularly in the following applications:

• ​optoelectronic technologies (information processing and storage) 
• sustainable materials (green chemistry, recycling, eco-design) 
• energy exploitation (solar energy conversion, photocatalytic devices) 
• Photomedicines (non-invasive methods, photodynamic therapy, cancer treatment).

• ​Thematic research in four areas: chirality, photochemistry and materials, energy and the environment, and health. 
• The creation of a national cluster of platforms, comprising two infrastructures: Ultrafast dedicated to ultrafast photoscience and the nano-structuring of matter by laser; 
• and Operando/Prototyping which brings together characterisation and analysis instruments, as well as equipment for the study and prototyping of photoactive materials and the conversion of solar energy.

• ​OPERANDO/PROTOTYPAGE is led by Jean-Pierre Simorre of the Institut de Biologie Structurale (IRIG/IBS). The Institut de Biologie Structurale (IRIG/IBS) operates a high-field nuclear magnetic resonance (NMR) platform that can be coupled with in situ sample illumination using a laser device. Solution-state NMR spectroscopy is the technique of choice for studying molecules from chemistry or biology at atomic resolution. Multidimensional NMR measurements under illumination provide access to information on light-induced chemical and structural changes in photosensitive, photoactivatable, and photoswitchable molecules​.
  
 
Photo 2: RMN platform at IBS (credit CEA)​.​

• The Molecular Systems and Nanomaterials for Energy and Health Laboratory (IRIG/SyMMES) manages a time-resolved electron spin resonance (ESR) spectroscopy platform using a rapid scan coupled to a laser, dedicated to the study of paramagnetic species involved in light energy conversion processes (photovoltaics, photocatalysis, etc.).
  

Photo 3: RPE platform at SyMMES (credit CEA)​.​

• ​​The Chemistry and Biology of Metals Laboratory (IRIG/LCBM), in partnership with INES, manages the characterisation and testing of photo(electro)catalytic devices. On the LCBM site, the facilities include a platform dedicated to photocatalytic or photoelectrocatalytic measurements with simulated solar irradiation on small devices for the production of solar hydrogen or carbon-based fuels (from 1 to 25 cm²)​.​
  
Photo 4: production of biofuel at LCBM (credit CEA)​.

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• ​​​Murielle Chavarot-Kerlidou (IRIG/LCBM) and Philip Gotico (CEA-Joliot) are leading ​the Moonshot project SYNFLUX-LUMICALS to develop photoelectro-catalytic systems for the production of solar fuels. This nature-inspired approach ​aimed at better understanding controlling and synchronising reactions ranging from the absorption of photons to the creation​ transport and use of charges across hybrid interfaces​.
  

Photo 5: photocatalyst experiment at LCBM (credit CEA)​.