Actualités

High-energy excited states with slow rates for internal conversion to the lowest-energy excited state are prone to be intercepted before they dissipate energy to the medium.

For this demonstration, a 50 nm-thick film of the ferroelectric polymer polyvinylidene fluoride–trifluoroethylene (PVDF-TrFE) was used to engrave the 600th anniversary logo at the microscale. Jean Spièce, a researcher in the BSMA division, programmed a scanning probe microscopy tool to locally “draw” arbitrary shapes by precisely modifying the material’s polarization.

Oriane Froment (BSMA) won the best poster award at the annual meeting of the SoftComp EU Network of Excellence (May 19-22 in Venice, Italy). The topic of her poster was "Introducing vitrimers in electrolytes for lithium-metal batteries" by Oriane Froment, Carla Barakat, Charles-André Fustin and Jean-François Gohy

Zinc-iodine batteries (ZIBs) are promising candidates for safe and sustainable energy storage but are hindered by polyiodide shuttling, leading to rapid capacity decay and limited cyclability. Together with researchers from KULeuven and MPIP in Germany, researcher from BSMA Jean-François Gohy has participated to a work led by Shanghai Jiao Tong University in which a “polyiodide reservoirs” concept has been proposed, utilizing iodophilic covalent organic cages to chemically confine polyiodide through host-guest interactions. By precisely engineering the nitrogen-active site densities around three-dimensional superphane-based cavities, these cages evolve from open to near-enclosed structure, achieving molecular-level polyiodide entrapment. This work has recently been published in Angewandte Chemie as Very Important Paper and establishes covalent organic superphanes as a platform for long-life ZIBs.

A block copolymer electrolyte (BCPE) with a liquid crystal and a lithium-ion conductive phase is investigated to assess the influence of an external applied electric field on the bulk morphology and the resulting electrochemical performance. For this purpose, the controlled synthesis of poly(10-[(4-cyano-4′-biphenyl)oxy] decatyl methacrylate)-block-(methoxy-poly(ethylene glycol) methacrylate-co-glycidyl methacrylate) [P(MALC)-b-P(PEGMA-co-GM)] block copolymer is performed by reversible addition–fragmentation transfer polymerization.