Fluorinated beta-Diketonate Diglyme Lanthanide Complexes as New Second-Order Nonlinear Optical Chromophores: The Role of f Electrons in the Dipolar and Octupolar Contribution to Quadratic Hyperpolarizability (Articolo in rivista)

Type
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  • Fluorinated beta-Diketonate Diglyme Lanthanide Complexes as New Second-Order Nonlinear Optical Chromophores: The Role of f Electrons in the Dipolar and Octupolar Contribution to Quadratic Hyperpolarizability (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Alternative label
  • Valore, A.; Cariati, E.; Righetto, S.; Roberto, D.; Tessore, F.; Ugo, R.; Fragala, I.L.; Fragala, M.E.; Malandrino, G.; De Angelis, F.; Belpassi, L.; Ledoux-Rak, I.; Thi, K.H.; Zyss, J. (2010)
    Fluorinated beta-Diketonate Diglyme Lanthanide Complexes as New Second-Order Nonlinear Optical Chromophores: The Role of f Electrons in the Dipolar and Octupolar Contribution to Quadratic Hyperpolarizability
    in Journal of the American Chemical Society (Print)
    (literal)
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  • Valore, A.; Cariati, E.; Righetto, S.; Roberto, D.; Tessore, F.; Ugo, R.; Fragala, I.L.; Fragala, M.E.; Malandrino, G.; De Angelis, F.; Belpassi, L.; Ledoux-Rak, I.; Thi, K.H.; Zyss, J. (literal)
Pagina inizio
  • 4966 (literal)
Pagina fine
  • 4970 (literal)
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  • 132 (literal)
Rivista
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  • DOI: 10.1021/ja101081q (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [Valore, Adriana; Cariati, Elena; Righetto, Stefania; Roberto, Dominique; Tessore, Francesca; Ugo, Renato] Univ Milan, Dipartimento CIMA L Malatesta, UdR INSTM Milano, I-20133 Milan, Italy. [Valore, Adriana; Cariati, Elena; Righetto, Stefania; Roberto, Dominique; Tessore, Francesca; Ugo, Renato] CNR, ISTM, I-20133 Milan, Italy. [Fragala, Ignazio L.; Fragala, Maria Elena; Malandrino, Graziella] Univ Catania, Dipartimento Sci Chim, I-95125 Catania, Italy. [Fragala, Ignazio L.; Fragala, Maria Elena] UdR INSTM Catania, I-95125 Catania, Italy. [De Angelis, Filippo; Belpassi, Leonardo] CNR, ISTM, I-06123 Perugia, Italy. [Ledoux-Rak, Isabelle; Thi, Khuyen Hoang; Zyss, Joseph] Ecole Normale Super, LPQM, Inst Alembert, F-94230 Cachan, France. (literal)
Titolo
  • Fluorinated beta-Diketonate Diglyme Lanthanide Complexes as New Second-Order Nonlinear Optical Chromophores: The Role of f Electrons in the Dipolar and Octupolar Contribution to Quadratic Hyperpolarizability (literal)
Abstract
  • The second-order nonlinear optical (NLO) properties of [Ln(hfac)(3)(diglyme)] (hfac = hexafluoroacetylacetonate; diglyme = bis(2-methoxyethyl)ether; Ln = La, Ce, Pr, Sm, Eu, Gd, Er, Lu) complexes have been investigated by a combination of electric-field second harmonic generation (EFISH) and harmonic light scattering (HLS) techniques, providing evidence for the relevant role of f electrons in tuning the second-order NLO response dominated by the octupolar contribution. These lanthanide NLO chromophores allow a clean valuation of the influence of f electrons on the quadratic hyperpolarizability and on its dipolar and octupolar contributions. Molecular quadratic hyperpolarizability values measured by the EFISH method, beta(EFISH), initially increase rapidly with the number of f electrons, the value for the Gd complex being 11 times that of the La complex, whereas this increase is much lower for the last seven f electrons, the beta(EFISH) value of the Lu complex being only 1.2 times that of the Gd complex. The increase of , which is dominated by an octupolar contribution, is much lower along the Ln series. Remarkably, the good values of these simple systems, well known for their luminescence properties, are reached at no cost of transparency. (literal)
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