Fiche publication
Date publication
octobre 2024
Journal
ACS nano
Auteurs
Membres identifiés du Cancéropôle Est :
Dr CHERIOUX Frédéric
Tous les auteurs :
Vasilev K, Canola S, Scheurer F, Boeglin A, Lotthammer F, Chérioux F, Neuman T, Schull G
Lien Pubmed
Résumé
Interactions between molecular electronic and vibrational states manifest themselves in a variety of forms and have a strong impact on molecular physics and chemistry. For example, the efficiency of energy transfer between organic molecules, ubiquitous in biological systems and in organic optoelectronics, is strongly influenced by vibronic coupling. Using an approach based on scanning tunneling microscope-induced luminescence (STML), we reveal vibronic interactions in optical spectra of a series of single phthalocyanine derivative molecules featuring degenerate or near-degenerate excited states. Based on detailed theoretical simulations, we disentangle spectroscopic signatures belonging to Franck-Condon and Herzberg-Teller vibronic progressions in tip-position-resolved STML spectra, and we directly map out the vibronic coupling between the close-lying excited states of the molecules.
Mots clés
Herzberg−Teller, STM-induced luminescence, Zn-phthalocyanine derivatives, vibronic coupling, vibronic spectroscopy
Référence
ACS Nano. 2024 10 3;:
