DI-UMONS : Dépôt institutionnel de l’université de Mons

Recherche transversale
(titres de publication, de périodique et noms de colloque inclus)
2006-07-28 - Article/Dans un journal avec peer-review - Anglais - 1 page(s)

Zhu L., Yi Y., Shuai Z., Brédas Jean-Luc , Beljonne David , Zojer E., "Structure-Property Relationships for Three-Photon Absorption in Stilbene-Based Dipolar and Quadrupolar Chromophores" in Journal of Chemical Physics, 125, 4, 044101

  • Edition : American Institute of Physics, New York (NY)
  • Codes CREF : Spectroscopie [électromagnétisme, optique, acoustique] (DI1255)
  • Unités de recherche UMONS : Chimie des matériaux nouveaux (S817)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) Based on essential-state models for three-photon absorption (3PA), we have investigated the structure-property relationships for stilbene-based dipolar and quadrupolar chromophores. The emphasis lies on the evolution of the 3PA cross section with the degree of ground-state polarization. For dipolar systems, we find a dominant role played by Deltamu, which expresses the change in dipole moment between the ground state and the 3PA active excited state. Thus, the strategies usually applied to maximize the second-order polarizability beta are also applicable to optimize the 3PA cross section. For quadrupolar systems, the 3PA response is dominated by contributions from channels including various low-lying two-photon allowed states, which limits the applicability of essential-state models. Optimization strategies can be proposed but vary for different ranges of ground-state polarization.

Notes :
  • (Anglais) Publié en ligne le 24 juillet 2006
Identifiants :
  • DOI : 10.1063/1.2216699