Speaker : Prof Ryo Nakayama, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan

Abstract :

Thin-film model systems offer a powerful platform for studying interfacial phenomena in solid-state lithium batteries and complex hydride electrolytes.  At the Li₃PO₄/LiCo₀.₅Mn₁.₅O₄ interface in a thin-film lithium batteries, the resistance increases above 5 V vs Li/Li+ due to interfacial layer formation but relaxes over time, indicating reversible behavior.  Epitaxial NaBH₄ thin films have been successfully fabricated via infrared pulsed-laser deposition, allowing control over growth orientation which is useful for interface study. These findings highlight the effectiveness of thin films in elucidating interface properties and advancing solid-state energy materials.

Contact: Pierre RABU : pierre.rabu@ipcms.unistra.fr

Speaker : Prof. Chihaya Adachi

Chihaya Adachi is a professor at Kyushu University in Japan and director of the Photonics and Organic Electronics Research Centre (OPERA). His activities focus on the chemistry, physics and implementation of organic semiconductor materials for applications in photonics and organic electronics. In particular, it is behind the development of the third generation of light-emitting diodes (OLEDs) based on thermally activated delayed fluorescence (TADF) organic materials. Cultivating close links with industry, Chihaya Adachi has co-founded two start-ups: Kyulux, in 2014, for the development and commercialisation of new materials for the OLED market; and Koala Tech, in 2019, for the development of purely organic laser materials and devices. Finally, he has developed numerous international collaborations, particularly with France. In 2023, the CNRS launched the IRP LUX-ERIT, which brings together the OPERA laboratory and four French laboratories, including the Institut de Physique et de Chimie des Matériaux de Strasbourg (IPCMS), the Institut Lavoisier de Versailles (ILV), the Laboratoire de Physique des Lasers (LPL) and the Institut Parisien de Chimie Moléculaire (IPCM), which is currently coordinating the project on the French side.

To meet C. Adachi, please contact: stephane.mery@ipcms.unistra.fr

Dr. Cécilia Ménard-Moyon  (CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572, University of Strasbourg)

Abstract :

The relatively low-cost production of graphene oxide (GO) and its dispersibility in various solvents,
including water, combined with its tunable surface chemistry, make GO an attractive building block to
design multifunctional materials. There are many applications for which it is fundamental to preserve
the intrinsic properties of GO, for instance in the biomedical field. As a consequence, the derivatization
of GO to impart novel properties has to be well controlled and the characterization of the functionalized
samples thoroughly done. Despite the great progress in the functionalization of GO, its chemistry is not
always well controlled and not fully understood.[1] In this context, I will explain some strategies for the
functionalization of GO through the selective derivatization of the epoxides and hydroxyl groups without
alteration of its properties and with biomedical perspectives for anticancer therapy.[2,3] I will also
present how the incorporation of carbon nanomaterials, such as carbon nanotubes and GO, in hydrogels
formed by the self-assembly of aromatic amino acid derivatives can control drug release.[4,5]
[1] Guo S, Garaj S, Bianco A, Ménard-Moyon C, Nat. Rev. Phys., 4 (2022) 247.
[2] Guo S, Nishina Y, Bianco A, Ménard-Moyon C, Angew. Chem. Int. Ed. Engl., 59 (2020) 1542.
[3] Guo S, Song Z, Ji DK, Reina G, Fauny JD, Nishina Y, Ménard-Moyon C, Bianco A, Pharmaceutics, 14 (2022) 1365.
[4] Guilbaud-Chéreau C, Dinesh B, Schurhammer R, Collin D, Bianco A, Ménard-Moyon C, ACS Appl. Mater.
Interfaces, 11 (2019) 13147.
[5] Xiang S, Guilbaud-Chéreau C, Hoschtettler P, Stefan L, Bianco A, Ménard-Moyon C, Int. J. Biol. Macromol., 255
(2024) 127919.