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Article: Preparation of functionalized polystyrene-block-polyisoprene copolymers and their luminescence properties

TitlePreparation of functionalized polystyrene-block-polyisoprene copolymers and their luminescence properties
Authors
Issue Date2002
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/macromolecules
Citation
Macromolecules, 2002, v. 35 n. 3, p. 850-856 How to Cite?
AbstractA series of block copolymers functionalized with aromatic 1,3,4-oxadiazole and stilbene derivatives have been synthesized by the palladium catalyzed reaction between polystyrene-block-polyisoprene and different functional units. These polymers exhibited different emission properties in solution and in the solid state. In chloroform solution, they showed relatively narrow and featured emission bands while, in the solid state, the emission band was broadened and showed a significant red shift. These observations were attributed to the formation of aggregates between the luminophores. After some oxadiazole functionalized copolymers were annealed at elevated temperature, such aggregation was enhanced and there were further changes in the emission spectra. For the bifunctional copolymers, such a shift in the emission band was not significant because the presence of two different chemical species in the same block may prevent the same type of luminophores from aggregating together.
Persistent Identifierhttp://hdl.handle.net/10722/70144
ISSN
2015 Impact Factor: 5.554
2015 SCImago Journal Rankings: 2.497
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHou, Sen_HK
dc.contributor.authorChan, WKen_HK
dc.date.accessioned2010-09-06T06:20:07Z-
dc.date.available2010-09-06T06:20:07Z-
dc.date.issued2002en_HK
dc.identifier.citationMacromolecules, 2002, v. 35 n. 3, p. 850-856en_HK
dc.identifier.issn0024-9297en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70144-
dc.description.abstractA series of block copolymers functionalized with aromatic 1,3,4-oxadiazole and stilbene derivatives have been synthesized by the palladium catalyzed reaction between polystyrene-block-polyisoprene and different functional units. These polymers exhibited different emission properties in solution and in the solid state. In chloroform solution, they showed relatively narrow and featured emission bands while, in the solid state, the emission band was broadened and showed a significant red shift. These observations were attributed to the formation of aggregates between the luminophores. After some oxadiazole functionalized copolymers were annealed at elevated temperature, such aggregation was enhanced and there were further changes in the emission spectra. For the bifunctional copolymers, such a shift in the emission band was not significant because the presence of two different chemical species in the same block may prevent the same type of luminophores from aggregating together.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/macromoleculesen_HK
dc.relation.ispartofMacromoleculesen_HK
dc.titlePreparation of functionalized polystyrene-block-polyisoprene copolymers and their luminescence propertiesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0024-9297&volume=35&issue=3&spage=850&epage=856&date=2002&atitle=Preparation+of+functionalized+polystyrene-block-polyisoprene+copolymers+and+their+luminescence+propertiesen_HK
dc.identifier.emailChan, WK:waichan@hku.hken_HK
dc.identifier.authorityChan, WK=rp00667en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/ma0107206en_HK
dc.identifier.scopuseid_2-s2.0-0037192226en_HK
dc.identifier.hkuros68396en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037192226&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume35en_HK
dc.identifier.issue3en_HK
dc.identifier.spage850en_HK
dc.identifier.epage856en_HK
dc.identifier.isiWOS:000173478200037-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHou, S=7201471840en_HK
dc.identifier.scopusauthoridChan, WK=13310083000en_HK

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