DC Field | Value | Language |
---|---|---|
dc.contributor.author | Woo, HY | ko |
dc.contributor.author | Shim, Hong Ku | ko |
dc.contributor.author | Lee, KS | ko |
dc.date.accessioned | 2013-03-03T09:49:27Z | - |
dc.date.available | 2013-03-03T09:49:27Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 1998-07 | - |
dc.identifier.citation | MACROMOLECULAR CHEMISTRY AND PHYSICS, v.199, no.7, pp.1427 - 1433 | - |
dc.identifier.issn | 1022-1352 | - |
dc.identifier.uri | http://hdl.handle.net/10203/78267 | - |
dc.description.abstract | Two types of new polyurethanes with a highly NLO active chromophore, 2-[4-[4-[bis(2-hydroxyethyl)amino] phenylazo] benzylidene] malonitrile (HAPM), in the polymer side chain were synthesized (PU1-DCN and PU2-DCN) and characterized. The diisocyanate components of the polymers are 2,4-tolylene diisocyanate and 3,3'-dimethoxybiphenyl-4,4'-ylene diisocyanate. The molecular weights of PU1-DCN and PU2-DCN were determined to be <(M)over bar (w)> = 23000 (<(M)over bar (w)>/<(M)over bar (n)> = 2.19) and <(M)over bar (w)> = 22000 (<(M)over bar (w)>/<(M)over bar (n)> = 2.34), respectively. The final products are readily soluble in polar aprotic organic solvents, like tetrahydrofuran, N,N-dimethylformamide, cyclohexanone, etc. Good optical quality films were obtained by spin coating. The glass transition temperatures of both polymers were found to be 158-159 degrees C. They showed no melting points in the DSC curves, suggesting an amorphous phase. It was found that the electro-optic coefficient of PU1-DCN was r(33) = 62.7 pm.V-1 at 633 nm wavelength. The macroscopic second-order hyperpolarizability at 1064 nm wavelength was determined to be chi((2)) = 136 pm.V-1 for PU1-DCN and chi((2)) = 120 pm.V-1 for PU2-DCN. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.subject | 2ND HARMONIC-GENERATION | - |
dc.subject | 2ND-HARMONIC GENERATION | - |
dc.subject | NONLINEAR OPTICS | - |
dc.subject | SIDE-CHAIN | - |
dc.subject | POLYMERS | - |
dc.subject | FILMS | - |
dc.title | Synthesis and optical properties of polyurethanes containing a highly NLO active chromophore | - |
dc.type | Article | - |
dc.identifier.wosid | 000074949500022 | - |
dc.identifier.scopusid | 2-s2.0-0000776560 | - |
dc.type.rims | ART | - |
dc.citation.volume | 199 | - |
dc.citation.issue | 7 | - |
dc.citation.beginningpage | 1427 | - |
dc.citation.endingpage | 1433 | - |
dc.citation.publicationname | MACROMOLECULAR CHEMISTRY AND PHYSICS | - |
dc.contributor.localauthor | Shim, Hong Ku | - |
dc.contributor.nonIdAuthor | Woo, HY | - |
dc.contributor.nonIdAuthor | Lee, KS | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | 2ND HARMONIC-GENERATION | - |
dc.subject.keywordPlus | 2ND-HARMONIC GENERATION | - |
dc.subject.keywordPlus | NONLINEAR OPTICS | - |
dc.subject.keywordPlus | SIDE-CHAIN | - |
dc.subject.keywordPlus | POLYMERS | - |
dc.subject.keywordPlus | FILMS | - |
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