Title :

Ultrafast time-resolved spectroscopy elucidating photo-driven electron and energy transfer processes in a broadband light-absorbing BODIPY-C-60-distyryl BODIPY triad

Author(s) :

Fatima, A. [Auteur]
Institut des Sciences Moléculaires d'Orsay [ISMO]
Rabah, J. [Auteur]
Institut Lavoisier de Versailles [ILV]
Allard, E. [Auteur]
Fensterbank, H. [Auteur]
Wright, K. [Auteur]
Burdzinski, G. [Auteur]
Miomandre, F. [Auteur]
Laboratoire de Photophysique et Photochimie Supramoléculaires et Macromoléculaires [PPSM]
Pham, J. [Auteur]
Clavier, G. [Auteur]
Sliwa, Michel [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Pino, T. [Auteur]
Meallet-Renault, R. [Auteur]
Steenkeste, K. [Auteur]
Ha-Thi, M. H. [Auteur]

Journal title :

The European Physical Journal. Special Topics

Abbreviated title :

Eur. Phys. J.-Spec. Top.

Volume number :

-

Pages :

-

Publication date :

2022-10-29

ISSN :

1951-6355

HAL domain(s) :

Chimie

English abstract : [en]

Photoinduced electron and energy transfer pathways are elucidated in a panchromatic light-absorbing, covalently linked triad (BODIPY-C60-distyryl BODIPY, noted as BDP-C60-DSBDP) along with the two reference dyads: BODIPY-C60 ...
Show more >Photoinduced electron and energy transfer pathways are elucidated in a panchromatic light-absorbing, covalently linked triad (BODIPY-C60-distyryl BODIPY, noted as BDP-C60-DSBDP) along with the two reference dyads: BODIPY-C60 (BDP-C60) and distyryl-BODIPY-C60 (DSBDP-C60). The flexible linker between the BODIPY and C60 units leads to different possible conformations with varying donor–acceptor distances. Ultrafast transient absorption along with the time-resolved emission spectroscopies revealed the occurrence of different photoinduced electron/energy transfer processes in these conformers. Photoexcitation of the BODIPY units in the two reference dyads leads to one electron and two energy transfer steps from BODIPY to C60. However, in the BDP-C60-DSBDP triad, additional energy transfer processes from BDP to DSBDP were evidenced upon photoexcitation of the BDP unit. The singlet excited state of DSBDP in the triad then follows the same relaxation route as that of the DSBDP-C60 dyad. The intricate photophysics, particularly the formation of radical ion pairs in these flexible covalently linked donor–acceptor systems contribute to our fundamental understanding of electron and energy transfer mechanisms, which is important to build donor–acceptor assemblies for energy applications.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516

Submission date :

2024-02-28T23:44:42Z
2024-03-19T15:17:15Z