5-Arylazo-2,2´-bithiophenes : a novel promising series of NLO chromophores

• Author(s): Raposo, M. Manuela M. ; Ferreira, Ana M. P. F. ; Belsley, M. ; Gomes, E. Matos ; Moura, João C. V. P.
• Date: 2008
• Persistent ID: http://hdl.handle.net/1822/7990
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Synthesis; Heterocyclic azo dyes; 5-alkoxy-2,2´-bithiophene couplers; UV-visible spectroscopy; Solvatochromic probes; Nonlinear optical (NLO) material; Hyper-Rayleigh scattering (HRS) technique
• Document Type: Article
• Language: English

Description

The synthesis of 5-arylazo- substituted bithiophenes and their UV-visible, solvatochromic and nonlinear optical properties (NLO) are described. In agreement with the solvatochromic data and also with the second-order molecular NLO characterization, the new donor-acceptor systems could find application as suitable solvatochromic probes and also as new NLO materials.