Project/scholarship details
- Project/scholarship ID
37816
- Reference
POCTI/QUI/37816/2001
- FundRef URI
- Funder
FCT - Fundação para a Ciência e a Tecnologia, I.P.
- Funder's country
Portugal
- Funding program
POCI
- Funding amount
54,200.00 €
- Start date
2002-05-02
- End date
2005-12-31
Documents
Formylation, dicyanovinylation and tricyanovinylation on 5-alkoxy- and 5-amino-...
Raposo, M. Manuela M.; Kirsch, G.Several donor-acceptor-substituted bithiophenes were synthesized by functionalization of the corresponding 5-alkoxy- or 5-aminobithiophenes 1 by different methods: Vilsmeier formylation, metalation followed by reaction with DMF, direct tricyanovinylation reaction using TCNE or Knoevenagel condensation starting from the corresponding 5-formyl- derivatives of 1.; ICCTI/French Embassy (Technical and Scientific Coo...
Donor-acceptor substituted oligothiophenes: synthesis, spectroscopic and electr...
Raposo, M. Manuela M.; Fonseca, A. Maurício C.; Kirsch, G.Seven new donor/acceptor oligothiophenes 1-2 were synthesized by Stille coupling in moderate to good yields. Compounds 1-2 were completely characterized by the usual spectroscopic methods. In agreement with the electrochemical and the spectroscopic studies for this compounds the new derivatives prepared, can find application for manufacturing new materials with strong non-linear optical (NLO) properties.; Funda...
A convenient acess to thienyl-substituted phthalazines
Raposo, M. Manuela M.; Sampaio, A. M. B. A.; Kirsch, G.A synthesis of 1‐alkoxy‐ and 1‐amino‐ substituted 4‐(2‐thienyl)‐phthalazines is described from halo‐derivatives of 4‐(2‐thienyl)‐l‐(2H)‐phthalazinone 3.; Thanks are due to Foundation for Science and Technology (Portugal) for financial support through IBQF (UM) and through FEDER, POCTI (ref. POCTI/QUI/37816/2001).; info:eu-repo/semantics/publishedVersion
Thienylpyrrole azo dyes: synthesis, solvatochromic and electrochemical properties
Raposo, M. Manuela M.; Sousa, Ana M. R. C.; Fonseca, A. Maurício C.; Kirsch, G.The synthesis and the evaluation of solvatochromic and electrochemical properties of new donor-acceptor-substituted thienylpyrrole azo dyes 3 are described. These derivatives exhibit dramatic changes in both their electronic and redox properties in comparison with thienylpyrroles 1. In agreement with the solvatochromic and electrochemical studies of push-pull derivatives 3 the new compounds prepared, may find a...
Synthesis and characterization of dicyanovinyl-substituted thienylpyrroles as n...
Raposo, M. Manuela M.; Sousa, Ana M. R. C.; Kirsch, G.; Cardoso, P.; Belsley, M.; Gomes, E. Matos; Fonseca, A. M.New dicyanovinyl-substituted 1-(alkyl)aryl-2-(2'-thienyl) pyrroles 2 were synthesized and characterized. The solvatochromic behavior of the synthesized compounds was investigated. All the derivatives showed reversible oxidation and reduction on the CV time scale. The hyperpolarizabilities (beta) of compounds 2 were measured using hyper-Rayleigh scattering. The results are among the highest beta values reported ...
New fluorescent heterocyclic materials: Synthesis, solvatochromic and fluoresce...
Costa, Susana P. G.; Batista, Rosa Maria Ferreira; Sousa, Ana M. R. C.; Raposo, M. Manuela M.Thienyl- and bithienyl-1,3-benzothiazoles 1 and 2 were synthesised by reacting various formyl thienyl and bithienyl derivatives with o-aminobenzenethiol in moderate to excellent yields. Evaluation of the solvatochromic and fluorescence properties of these compounds was carried out. Due to their strong fluorescence and also the strong push-pull character, benzothiazole derivatives 1 and 2 can be used as potentia...
Donor-acceptor substituted thienylpyrrole azo dyes: synthesis, solvatochromic a...
Raposo, M. Manuela M.; Sousa, Ana M. R. C.; Fonseca, A. Maurício C.; Kirsch, G.The synthesis of thienyl- substituted pyrrole azo dyes and their UV-visible, solvatochromic and electrochemical properties are described. In agreement with the solvatochromic data and also with the electrochemical study the new donor-acceptor systems synthesized could have applications in NLO.; Fundação para a Ciência e Tecnologia (FCT)
Quantum chemical DFT and spectroscopic UV-Vis-NIR analysis of a series of push-...
Oliva, M. M.; Delgado, M. C. R.; Casado, J.; Raposo, M. Manuela M.; Fonseca, A. M.; Hartmann, H.A series of push-pull chromophores built around thiophene-based -conjugating spacers and bearing various types of amino-donors and cyanovinyl-acceptors have been analyzed by means of UV-Vis- NIR spectroscopic measurements. Density functional theory (DFT) calculations have also been performed to help the assignment of the most relevant electronic features and to derive useful information about the molecular stru...
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