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Papers by Keyword: Non-Linear Optical (NLO) Material

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Donor-Acceptor Substituted Thienylpyrrole Azo Dyes: Synthesis, Solvatochromic and Electrochemical Properties

Authors: M. Manuela M. Raposo, Ana M. R. C. Sousa, António Maurício C. Fonseca, Gilbert Kirsch

Abstract: 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.

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Push-Pull Tricyanovinyl-Substituted Thienylpyrroles: Synthesis, Solvatochromic and Electrochemical Properties

Authors: M. Manuela M. Raposo, Ana M. R. C. Sousa, António Maurício C. Fonseca, Gilbert Kirsch

Abstract: New tricyanovinyl- derivatives 1 of 1-(alkyl)aryl-2-(2´-thienyl)pyrroles 2 have been synthesized and characterized. Compounds 1 display dramatic reductions in both their optical and electrochemical band gaps in comparison to thienylpyrroles 2. The solvatochomic behavior of tricyanovinyl- derivatives 1 was investigated in a variety of solvents. In agreement with the solvatochromic and the electrochemical studies for push-pull derivatives 1 the new compounds prepared, can find application for manufacturing new materials with notable non-linear optical properties.