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Title5´-alkoxy-2,2´-bithiophene azo dyes: a novel promising series of NLO chromophores
Author(s)Raposo, M. Manuela M.
Ferreira, Ana M. P. F.
Belsley, M.
Moura, João C. V. P.
Azo coupling
5-alkoxy-2,2´-bithiophene couplers
Heterocyclic azo dyes
Solvatochromic probes
UV-visible spectroscopy
Thermal stability
Nonlinear optics (NLO) applications
Donor-acceptor conjugated systems
First hyperpolarizability
nonlinear optics (NLO)
Issue date18-Apr-2008
Citation"Tetrahedron". ISSN 0040-4020. 64:25 (2008) 5878-5884.
Abstract(s)A series of bithienyl azo dyes has been prepared from their corresponding coupling components, 5-alkoxy-2,2´-bithiophenes. The solvatochromic behavior of the compounds was investigated. The hyperpolarizabilities β of derivatives 3-5 were measured using hyper-Rayleigh scattering and thermogravimetric analysis (TGA) was used to evaluate their thermal stability. The experimental results indicate that, good nonlinearity-thermal stability is well balanced for azo-bithiophene NLO-chromophores 3-5 making them good candidates for NLO applications.
AccessOpen access
Appears in Collections:CDQuim - Artigos (Papers)

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