Synthesis and optical properties of polyurethanes containing a highly NLO active chromophore

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dc.contributor.authorWoo, HYko
dc.contributor.authorShim, Hong Kuko
dc.contributor.authorLee, KSko
dc.date.accessioned2013-03-03T09:49:27Z-
dc.date.available2013-03-03T09:49:27Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued1998-07-
dc.identifier.citationMACROMOLECULAR CHEMISTRY AND PHYSICS, v.199, no.7, pp.1427 - 1433-
dc.identifier.issn1022-1352-
dc.identifier.urihttp://hdl.handle.net/10203/78267-
dc.description.abstractTwo 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.languageEnglish-
dc.publisherWILEY-V C H VERLAG GMBH-
dc.subject2ND HARMONIC-GENERATION-
dc.subject2ND-HARMONIC GENERATION-
dc.subjectNONLINEAR OPTICS-
dc.subjectSIDE-CHAIN-
dc.subjectPOLYMERS-
dc.subjectFILMS-
dc.titleSynthesis and optical properties of polyurethanes containing a highly NLO active chromophore-
dc.typeArticle-
dc.identifier.wosid000074949500022-
dc.identifier.scopusid2-s2.0-0000776560-
dc.type.rimsART-
dc.citation.volume199-
dc.citation.issue7-
dc.citation.beginningpage1427-
dc.citation.endingpage1433-
dc.citation.publicationnameMACROMOLECULAR CHEMISTRY AND PHYSICS-
dc.contributor.localauthorShim, Hong Ku-
dc.contributor.nonIdAuthorWoo, HY-
dc.contributor.nonIdAuthorLee, KS-
dc.type.journalArticleArticle-
dc.subject.keywordPlus2ND HARMONIC-GENERATION-
dc.subject.keywordPlus2ND-HARMONIC GENERATION-
dc.subject.keywordPlusNONLINEAR OPTICS-
dc.subject.keywordPlusSIDE-CHAIN-
dc.subject.keywordPlusPOLYMERS-
dc.subject.keywordPlusFILMS-
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