Synthesis and characterization of new thienylpyrrolyl-benzothiazoles as efficient and thermally stable nonlinear optical chromophores
摘要:
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 beta 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 strong nonlinearity is balanced by good thermal stability especially for chromophores 6b and 6c, making them good candidates for NLO applications. (C) 2007 Elsevier Ltd. All rights reserved.
Synthesis of formyl-thienylpyrroles: versatile building blocks for NLO materials
摘要:
Several formyl-substituted 1-alkyl(aryl)-2-(2'-thienyl)pyrroles 3-7 were synthesized by functionalization of the pyrrole or thiophene ring of thienylpyrroles 2 using different methods: Vilsnicier formylation or metalation followed by reaction with DMF. (c) 2006 Elsevier Ltd. All rights reserved.