Conférence Dr Rémi Métivier

Dr Rémi Métivier

Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, Gif-sur-Yvette, France.

Interplay between fluorescent and photochromic units in multichromophoric architectures

The exciting field of advanced fluorescent molecular systems, adorned with captivating photoswitching capabilities, beckons at the crossroads of molecular design, photophysics, and materials engineering. We will explore the design of various conjugated molecules that interweave photochromic and fluorescent units in different configurations, to investigate their multiple interactions in detail. We will target intrinsic photochromic-fluorescent derivatives, as well as molecular dyads linked by covalent bonds, and supramolecular architectures assembled in nanosystems.^[1] The complex interplay between these entities unfolds fascinating dynamics (Fig. 1), involving excitation energy transfer, such as balanced fluorescence and photoreaction pathways,^[2] giant amplification of fluorescence photoswitching,^[3] or unprecedented zero-order photokinetic effects.^[4] To unravel these intriguing effects and decipher the multiple layers of interactions, our methodology includes time-resolved spectroscopy, microscopy, and theoretical simulations.^[2-5]

Multiple effects emerging from the combination of fluorescent and photochromic molecules.

Références

[1]    R. Métivier, N. Fabre, A. Mokhtar, T. Fukaminato, “Photochromic Nanoparticles: from Fluorescence to Assembly”, in Molecular Photoswitches – Synthesis, Properties and Applications, Pianowski Z. (ed.), Wiley, 2022; T. Fukaminato, S. Ishida, R. Métivier, NPG Asia Materials 2018, 10, 859.

[2]    Y. Zhou, S. Maisonneuve, L. Casimiro, P. Retailleau, J. Xie, F. Maurel, R. Métivier, Phys. Chem. Chem. Phys. 2022, 24, 6282; L. Casimiro, S. Maisonneuve, P. Retailleau, S. Silvi, J. Xie, R. Métivier, Chem. Eur. J. 2020, 26, 14341; E. Barrez, G. Laurent, C. Pavageau, M. Sliwa, R. Métivier, Phys. Chem. Chem. Phys. 2018, 20, 2470.

[3]    J. Su, T. Fukaminato, J.-P. Placial, T. Onodera, R. Suzuki, H. Oikawa, A. Brosseau, F. Brisset, R. Pansu, K. Nakatani, R. Métivier, Angew. Chem. Int. Ed. 2016, 55, 3662; I. Ikariko, S. Deguchi, N. Fabre, S. Ishida, S. Kim, S. Kurihara, R. Métivier, T. Fukaminato, Dyes Pigments 2020, 180, 108490.

[4]    N. Fabre, T. Fukaminato, I. Ikariko, L. Chocron, A. Brosseau, R. Métivier, Adv. Opt. Mater. 2024, 12, 2400452.

[5]    N. Fabre, T. Fukaminato, A. Brosseau, M. Sliwa, R. Métivier, Photochem. Photobiol. Sci., 2023, 22, 1673; Y. Zhou, S. Maisonneuve, F. Maurel, J. Xie, R. Métivier, Chem. Eur. J. 2022, 28, e202202071.