Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/2856
Título: Synthesis of new Fe(II) and Ru(II) eta(5)-monocyclopentadienyl compounds showing significant second order NLO properties
Autor: Valente, Andreia
Royer, Sophie
Narendra, Milan
Silva, Tiago J. L.
Mendes, Paulo J. G.
Robalo, M. Paula
Abreu, Manuel
Heck, Juergen
Garcia, M. Helena
Palavras-chave: Cyclopentadienyl complexes
Quadratic hyperpolarizabilities
Hyper-Rayleigh scattering
Kurtz powder technique
Second-order nonlinear optical
Nonlinear-Optical Properties
Ray Crystal-Structure
Organometallic Compounds
2ND-Harmonic Generation
Organic Materials
Powder Technique
Data: 15-Jul-2013
Editora: Elsevier Science SA
Citação: VALENTE, Andreia; ROYER, Sophie; NARENDRA, Milan; SILVA, Tiago J. L.; MENDES, Paulo J. G.; ROBALO, M. Paula; ABREU, Manuel; HECK Juergen; GARCIA, M. Helena - Synthesis of new Fe(II) and Ru(II) eta(5)-monocyclopentadienyl compounds showing significant second order NLO properties. Journal of Organometallic Chemistry. ISSN 0022-328X. Vol. 736 (2013), p. 42-49.
Resumo: A series of new ruthenium(II) complexes of the general formula [Ru(eta(5)-C5H5)(PP)(L)][PF6] (PP = DPPE or 2PPh(3), L = 4-butoxybenzonitrile or N-(3-cyanophenyl)formamide) and the binuclear iron(II) complex [Fe(eta(5)-C5H5)(PP)(mu-L)(PP)(eta(5)-C5H5)Fe][PF6](2) (L = (E)-2-(3-(4-nitrophenyl)allylidene)malononitrile, that has been also newly synthesized) have been prepared and studied to evaluate their potential in the second harmonic generation property. All the new compounds were fully characterized by NMR, IR and UV-Vis spectroscopies and their electrochemistry behaviour was studied by cyclic voltammetry. Quadratic hyperpolarizabilities (beta) of three of the complexes have been determined by hyper-Rayleigh scattering (HRS) measurements at fundamental wavelength of 1500 nm and the calculated static beta(0) values are found to fall in the range 65-212 x 10(-30) esu. Compound presenting beta(0) = 212 x 10(-30) esu has revealed to be 1.2 times more efficient than urea standard in the second harmonic generation (SHG) property, measured in the solid state by Kurtz powder technique, using a Nd:YAG laser (1064 nm). (C) 2013 Elsevier B.V. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10400.21/2856
ISSN: 0022-328X
Aparece nas colecções:ISEL - Eng. Quim. Biol. - Artigos

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