Pt-acetylides with different end-side groups have been synthesized and incorporated in poly(methylmethacrylate) (PMMA) films for second-order nonlinear optics through high-temperature corona-poling. By using two complementary optical techniques, i.e. in-situ second-harmonic generation (SHG) and angle-resolved spectroscopy, the order parameter and the molecular hyperpolarizability beta of the chromophores have been characterized inside the polymer matrix. The relaxation of orientational after order poling fits a hi-exponential equation in agreement with the Debye model for guest/host systems. A comparison with the ate-dye Disperse Red 1 (DR1) is discussed within the two-level model and the role of the platinum moiety for conjugated molecules.
Second-harmonic generation and absorption spectra of platinum organometallic complexes incorporated in PMMA films / Casalboni, M; Sarcinelli, F; Pizzoferrato, R; D'Amato, R; Furlani, A; Russo, Maria Vittoria. - In: CHEMICAL PHYSICS LETTERS. - ISSN 0009-2614. - 319:(2000), pp. 107-112. [10.1016/S0009-2614(00)00103-2]
Second-harmonic generation and absorption spectra of platinum organometallic complexes incorporated in PMMA films
RUSSO, Maria Vittoria
2000
Abstract
Pt-acetylides with different end-side groups have been synthesized and incorporated in poly(methylmethacrylate) (PMMA) films for second-order nonlinear optics through high-temperature corona-poling. By using two complementary optical techniques, i.e. in-situ second-harmonic generation (SHG) and angle-resolved spectroscopy, the order parameter and the molecular hyperpolarizability beta of the chromophores have been characterized inside the polymer matrix. The relaxation of orientational after order poling fits a hi-exponential equation in agreement with the Debye model for guest/host systems. A comparison with the ate-dye Disperse Red 1 (DR1) is discussed within the two-level model and the role of the platinum moiety for conjugated molecules.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.