Two-Photon Absorption Cooperative Effects within Multi-Dipolar Ruthenium Complexes: The Decisive Influence of Charge Transfers - Archive ouverte HAL Access content directly
Journal Articles Molecules Year : 2022

Two-Photon Absorption Cooperative Effects within Multi-Dipolar Ruthenium Complexes: The Decisive Influence of Charge Transfers

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1
Nicolas Durand
  • Function : Author
  • PersonId : 1129433
Anissa Amar
  • Function : Author
Rana Mhanna
  • Function : Author
  • PersonId : 1129434
Huriye Akdas-Kiliç
  • Function : Author
  • PersonId : 981173
Olivier Soppera
Jean-Pierre Malval
  • Function : Author
  • PersonId : 865165
Abdou Boucekkine
  • Function : Author
  • PersonId : 945147

Abstract

One- and two-photon characterizations of a series of hetero- and homoleptic [RuL(bpy)] ( = 0, 1, 2) complexes carrying bipyridine π-extended ligands (L), have been carried out. These π-extended D-π-A-A-π-D-type ligands (L), where the electron donor units (D) are based on diphenylamine, carbazolyl, or fluorenyl units, have been designed to modulate the conjugation extension and the donating effect. Density functional theory calculations were performed in order to rationalize the observed spectra. Calculations show that the electronic structure of the π-extended ligands has a pronounced effect on the composition of HOMO and LUMO and on the metallic contribution to frontier MOs, resulting in strikingly different nonlinear properties. This work demonstrates that ILCT transitions are the keystone of one- and two-photon absorption bands in the studied systems and reveals how much MLCT and LLCT charge transfers play a decisive role on the two-photon properties of both hetero- and homoleptic ruthenium complexes through cooperative or suppressive effects.
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hal-03597497 , version 1 (04-03-2022)

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Nicolas Durand, Anissa Amar, Rana Mhanna, Huriye Akdas-Kiliç, Olivier Soppera, et al.. Two-Photon Absorption Cooperative Effects within Multi-Dipolar Ruthenium Complexes: The Decisive Influence of Charge Transfers. Molecules, 2022, 27 (5), pp.1493. ⟨10.3390/molecules27051493⟩. ⟨hal-03597497⟩
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