Efficient Photoredox Cycles to Control Perylenediimide Self‐Assembly - Archive ouverte HAL
Article Dans Une Revue Chemistry - A European Journal Année : 2022

Efficient Photoredox Cycles to Control Perylenediimide Self‐Assembly

Chunfeng Chen
  • Fonction : Auteur
  • PersonId : 1235171
Jorge Santos Valera
  • Fonction : Auteur
  • PersonId : 1235172
Thomas Hermans
  • Fonction : Auteur
  • PersonId : 1054822

Résumé

Photoreduction of perylenediimide (PDI) derivatives has been widely studied for use in photocatalysis, hydrogen evolution, photo-responsive gels, and organic semiconductors. Upon light irradiation, the radical anion (PDI⋅- ) can readily be obtained, whereas further reduction to the dianion (PDI2- ) is rare. Here we show that full 2-electron photoreduction can be achieved using UVC light: 1) in anaerobic conditions by 'direct photoreduction' of PDI aggregates, or 2) by 'indirect photoreduction' in aerobic conditions due to acetone ketyl radicals. The latter strategy is also efficient for other dyes, such as naphthalenediimide (NDI) and methylviologen (MV2+ ). Efficient photoreduction on the minute time-scale using simple LED light in aerobic conditions is attractive for use in dissipative light-driven systems and materials.
Fichier principal
Vignette du fichier
islandora_160378.pdf (1.43 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04020467 , version 1 (08-03-2023)

Identifiants

Citer

Chunfeng Chen, Jorge Santos Valera, Takuji B. M. Adachi, Thomas Hermans. Efficient Photoredox Cycles to Control Perylenediimide Self‐Assembly. Chemistry - A European Journal, 2022, 29 (1), ⟨10.1002/chem.202202849⟩. ⟨hal-04020467⟩
24 Consultations
56 Téléchargements

Altmetric

Partager

More