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|Title: ||NEW ORGANIC LIGANDS FOR NONLINEAR OPTICAL COMPLEXES|
|Authors: ||Teixeira, António P. S.|
Pais, Vânia F.
Robalo, M. Paula
Garcia, M. Helena
Piedade, M. Fátima Minas
Duarte, M. Teresa
Dias, A. R.
|Keywords: ||Organic ligands|
|Issue Date: ||Jul-2007|
|Citation: ||Vânia F. Pais, António P. S. Teixeira, Maria Paula Robalo, Maria Helena Garcia, M. Fátima Minas da Piedade, M. Teresa Duarte, A. R. Dias, ”New Organic Ligands for nonlinear Optical”, PC27, 7º Encontro Nacional de Química Orgânica e 1º Encontro Luso-Francês de Química Orgânica, 16-18 de Julho de 2007, Lisboa|
|Abstract: ||The search for organometallic compounds with nonlinear optical (NLO) properties
has becoming a field of considerable interest due to their potential as materials with
technological applications in the area of nonlinear optical phenomena . In the
organometallic push-pull systems, the metal center behaves as an electron-acceptor or
electron-donating center bonded to an organic delocalized pi-electron system. Organic
compounds could present themselves NLO properties due to the high electronic
polarizability of their .-system . The ability to introduce subtle changes in the
chemical structures, leading to improvements in their properties, and to build structureproperty
relationships, make the organic compounds still good candidates for
electronics and optical phenomena investigation area [1,2].
Here, we present the synthesis and spectroscopic characterization of electronwithdrawing
organic ligands, suitable for coordination to electron donating Fe or Ru
metal centers. These ligands present a two aromatic rings backbone linked by a spacer
(double, triple or hydrazone bond) with one or two electron withdrawing nitro groups on
para and ortho positions of the second aryl ring (Figure 1). The substitution with a
nitrile or alkyne groups provide an available site for coordination to the metals. The
structures of several compounds were confirmed by X-Ray diffraction studies.|
|Appears in Collections:||CQE - Artigos em Livros de Actas/Proceedings|
QUI - Artigos em Livros de Actas/Proceedings
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