Synthesis and Nonlinear Optical Properties of Novel Ttype Polyurethane Containing Tricyanovinylthiophene

A novel T-type polyurethane 7 containing 1-(2,5-dioxyphenyl)-2-{5-(1,2,2-tricyanovinyl)-2-thienyl}ethene groups as nonlinear optical (NLO) chromophores was prepared and characterized. Polyurethane 7 is soluble in common organic solvents such as DMF and DMSO. Polymer 7 shows a thermal stability up to...

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Bibliographic Details
Published inMolecular Crystals and Liquid Crystals Vol. 539; p. 442
Main Authors Cho, You Jin, Kim, Mi Sung, Lee, Ju-Yeon
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis Ltd 11.04.2011
Subjects
Molecular structure
Optical properties
Polymer films
Polyurethane
Solvents
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Summary:A novel T-type polyurethane 7 containing 1-(2,5-dioxyphenyl)-2-{5-(1,2,2-tricyanovinyl)-2-thienyl}ethene groups as nonlinear optical (NLO) chromophores was prepared and characterized. Polyurethane 7 is soluble in common organic solvents such as DMF and DMSO. Polymer 7 shows a thermal stability up to 270...C from TGA thermogram and the ... value obtained from DSC thermogram is around 155...C. The second harmonic generation (SHG) coefficient (...) of poled polymer film at 1560 nm fundamental wavelength is 3.56 x 10... esu. The dipole alignment exhibits a thermal stability even at 5...C higher than ..., and there is no SHG decay below 160...C due to the partial main-chain character of the polymer structure, which is acceptable for nonlinear optical device applications. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:1542-1406
1527-1943