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Article: Photorefractive polymers. 2. Structure design and property characterization

TitlePhotorefractive polymers. 2. Structure design and property characterization
Authors
Issue Date1993
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/macromolecules
Citation
Macromolecules, 1993, v. 26 n. 9, p. 2216-2221 How to Cite?
AbstractTo manifest a photorefractive effect, the polymer must possess a photocharge generator, a charge transporter, a charge trapping center, and a nonlinear optical (NLO) chromophore. We have synthesized novel photorefractive polymers which contain the NLO chromophore, the charge generator, and the transporting compound covalently linked to the polymer backbone. The charge generators absorbed strongly in the visible region (550-600 nm), allowing us to excite the species with normal laser sources. The other species had absorptions below 450 nm avoiding spectral overlap of these species with the charge generator. Structural characterizations confirmed that all of the species were incorporated into the polymer chains. These polymers exhibit relatively large electrooptical effects (r33 = 12.2 and 13.0 pm/V for polymers 1 and 2, respectively). A photocurrent of 1.4 μA was observed with a response time of 100 ms. Two beam coupling experiments revealed that the refractive index grating caused by the space charge field with a phase shift of 90° is a major contribution to the optical gain, which is a demonstration of the photorefractive effect.
Persistent Identifierhttp://hdl.handle.net/10722/167510
ISSN
2015 Impact Factor: 5.554
2015 SCImago Journal Rankings: 2.497

 

DC FieldValueLanguage
dc.contributor.authorYu, Lupingen_US
dc.contributor.authorChan, Waikinen_US
dc.contributor.authorBao, Zhenanen_US
dc.contributor.authorCao, Simon XFen_US
dc.date.accessioned2012-10-08T03:07:52Z-
dc.date.available2012-10-08T03:07:52Z-
dc.date.issued1993en_US
dc.identifier.citationMacromolecules, 1993, v. 26 n. 9, p. 2216-2221en_US
dc.identifier.issn0024-9297en_US
dc.identifier.urihttp://hdl.handle.net/10722/167510-
dc.description.abstractTo manifest a photorefractive effect, the polymer must possess a photocharge generator, a charge transporter, a charge trapping center, and a nonlinear optical (NLO) chromophore. We have synthesized novel photorefractive polymers which contain the NLO chromophore, the charge generator, and the transporting compound covalently linked to the polymer backbone. The charge generators absorbed strongly in the visible region (550-600 nm), allowing us to excite the species with normal laser sources. The other species had absorptions below 450 nm avoiding spectral overlap of these species with the charge generator. Structural characterizations confirmed that all of the species were incorporated into the polymer chains. These polymers exhibit relatively large electrooptical effects (r33 = 12.2 and 13.0 pm/V for polymers 1 and 2, respectively). A photocurrent of 1.4 μA was observed with a response time of 100 ms. Two beam coupling experiments revealed that the refractive index grating caused by the space charge field with a phase shift of 90° is a major contribution to the optical gain, which is a demonstration of the photorefractive effect.en_US
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/macromoleculesen_US
dc.relation.ispartofMacromoleculesen_US
dc.titlePhotorefractive polymers. 2. Structure design and property characterizationen_US
dc.typeArticleen_US
dc.identifier.emailChan, Waikin:waichan@hku.hken_US
dc.identifier.authorityChan, Waikin=rp00667en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0027573780en_US
dc.identifier.volume26en_US
dc.identifier.issue9en_US
dc.identifier.spage2216en_US
dc.identifier.epage2221en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridYu, Luping=7404164831en_US
dc.identifier.scopusauthoridChan, Waikin=13310083000en_US
dc.identifier.scopusauthoridBao, Zhenan=23065783000en_US
dc.identifier.scopusauthoridCao, Simon XF=15074732600en_US

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