Journal
TETRAHEDRON
Volume 63, Issue 20, Pages 4258-4265Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2007.03.065
Keywords
pyrrole; benzothiazole; solvatochromism; hyper-Rayleigh (HRS) scattering; thermal stability; nonlinear optical (NLO) material
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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.
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