Push-pull tricyanovinyl-substituted thienylpyrroles : synthesis, solvatochromic...

• Author(s): Raposo, M. Manuela M. ; Sousa, Ana M. R. C. ; Fonseca, A. Maurício C. ; Kirsch, G.
• Date: 2006
• Persistent ID: http://hdl.handle.net/1822/7839
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Thiophene; Pyrrole; Push-pull thienylpyrroles; Tricyanovinylation; UV-visible spectroscopy; Chromophores; Solvatochromism; Electrochemistry; Non-linear optical (NLO) material
• Document Type: Article
• Language: English

Description

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 I the new compounds prepared, can find application for manufacturing new materials with notable non-linear optical properties.