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Conferences > EQEC > 2023 > ee_3 > ee_3_1
  • Conference on Lasers and Electro-Optics/Europe (CLEO/Europe 2023) and European Quantum Electronics Conference (EQEC 2023)
  • Technical Digest Series (Optica Publishing Group, 2023),
  • paper ee_3_1

Ultrafast Dynamics in Donor-Acceptor Prototype Molecules by XUV-IR Attosecond Spectroscopy

F. Vismarra, R. Borrego-Varillas, Y. Wu, D. Mocci, F. Fernández-Villoria, L. Colaizzi, M. Reduzzi, F. Holzmeier, L. Carlini, P. Bolognesi, R. Ritcher, L. Avaldi, J. González-Vázquez, A. Palacios, J. Santos, M. Lucchini, L. Bañares, N. Martín, F. Martín, and M. Nisoli

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Abstract

Photoinduced electron transfer and charge transfer are processes at the basis of core technologies aiming, for example, at effective conversion of solar energy into electrical energy. A complete understanding of these processes requires real-time imaging of the electronic-nuclear motion, taking place on the few-femtosecond time scales [1]. Here we investigate, by attosecond spectroscopy, the ultrafast dynamics following photoionization in nitroanilines, the simplest donor-acceptor system. We explore three systems with different functionalization of the push-pull groups (4-nitroaniline, 4-NA; 3-nitroaniline, 3-NA; N,N-Dimethyl-4-nitroaniline, nd-NA; chemical structures shown in Fig. 1). Our results, supported by photo-electron photo-ion coincidence energy-resolved (PEPICO) measurements and quantum simulations, show that the observed ultrafast dynamics are correlated to the wave-packet spreading in the excited states of the cation.

© 2023 IEEE

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