Synthesis and characterization of new thienylpyrrolyl-benzothiazoles as efficie...

• Autor(es): Batista, Rosa M. F. ; Costa, Susana P. G. ; Malheiro, Elisabeth L. ; Belsley, M. ; Raposo, M. Manuela M.
• Data: 2007
• Identificador Persistente: http://hdl.handle.net/1822/7825
• Origem: RepositóriUM - Universidade do Minho
• Assunto(s): Thiophene; Pyrrole; Benzothiazole; Solvatochromism; Hyper-Rayleigh scattering (HRS); Thermal stability; Nonlinear optical (NLO) material
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

The synthesis and full characterization of new chromophores with second-order nonlinearities containing thienylpyrrolyl and benzothiazolyl moieties are reported. The solvatochromic behavior of the compounds was investigated. The hyperpolarizabilities _ of derivatives 4-6 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 specially for chromophores 6b-c, making them good candidates for NLO applications.