Publicação
Compromise Between Conjugation Length and Charge-Transfer in Nonlinear Optical Monocyclopentadienyliron Complexes
| Resumo: | We study the conjugation-length dependence of the first hyperpolarizability in a series of complexes of general formula [FeCp(P_P)(NC{SC4H2}nNO2)][PF6] (P_P=dppe, (+)-diop; n=1 3). Spectroscopic data are used in order to evaluate the effect of the type of phosphine coligand and the length of the conjugated ligand on the second-order NLO response of the complexes, which is compared to the observations for the p-benzonitrile analogues. Cyclic voltammetry is also used as a tool for a better understanding of the electronic factors responsible for the NLO behaviour of the compounds studied in this work. |
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| Autores principais: | Mendes, Paulo J. G. |
| Assunto: | Iron complexes nonlinear optics |
| Ano: | 2008 |
| País: | Portugal |
| Tipo de documento: | palestra |
| Tipo de acesso: | acesso restrito |
| Instituição associada: | Universidade de Évora |
| Idioma: | inglês |
| Origem: | Repositório Científico da Universidade de Évora |
| Resumo: | We study the conjugation-length dependence of the first hyperpolarizability in a series of complexes of general formula [FeCp(P_P)(NC{SC4H2}nNO2)][PF6] (P_P=dppe, (+)-diop; n=1 3). Spectroscopic data are used in order to evaluate the effect of the type of phosphine coligand and the length of the conjugated ligand on the second-order NLO response of the complexes, which is compared to the observations for the p-benzonitrile analogues. Cyclic voltammetry is also used as a tool for a better understanding of the electronic factors responsible for the NLO behaviour of the compounds studied in this work. |
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