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Article: Nanosized micelles formed by the self-assembly of amphiphilic block copolymers with luminescent rhenium complexes

TitleNanosized micelles formed by the self-assembly of amphiphilic block copolymers with luminescent rhenium complexes
Authors
Issue Date2003
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/langmuir
Citation
Langmuir, 2003, v. 19 n. 6, p. 2485-2490 How to Cite?
AbstractWe have synthesized a series of polystyrene-block-poly(4-vinylpyridine)s (PS-&-PVP) to which luminescent tricarbonyl(2,2′-bipyridyl)rhenium(I) complexes were attached. The rhenium complexes could induce the self-assembly of the copolymers into nanosized micelles with different shapes and dimensions, depending on the block size distribution of the copolymers and the solvent system being used. In general, spherical micelles were observed when methanol, a nonsolvent for the polystyrene block, was added to a copolymer solution in dichloromethane. Micellization was observed when the added methanol concentration was approximately 30%. When toluene, a nonsolvent for the poly(4-vinylpyridine) block, was added to the copolymer solution in dichloromethane, micelles with different interesting shapes were observed. For copolymers with larger PVP block size, spherical micelles were observed. When the relative block size of the PVP block was reduced, the micelles gradually changed to disk or vesicle structures and then to rodlike structures. The rhenium complex can act as a luminescent probe in the resulting nanosized micelles and provide sufficient contrast for electron microscopic studies. Significant changes in luminescence spectra were observed after the micellization.
Persistent Identifierhttp://hdl.handle.net/10722/70471
ISSN
2015 Impact Factor: 3.993
2015 SCImago Journal Rankings: 1.750
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHou, Sen_HK
dc.contributor.authorMan, KYKen_HK
dc.contributor.authorChan, WKen_HK
dc.date.accessioned2010-09-06T06:23:11Z-
dc.date.available2010-09-06T06:23:11Z-
dc.date.issued2003en_HK
dc.identifier.citationLangmuir, 2003, v. 19 n. 6, p. 2485-2490en_HK
dc.identifier.issn0743-7463en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70471-
dc.description.abstractWe have synthesized a series of polystyrene-block-poly(4-vinylpyridine)s (PS-&-PVP) to which luminescent tricarbonyl(2,2′-bipyridyl)rhenium(I) complexes were attached. The rhenium complexes could induce the self-assembly of the copolymers into nanosized micelles with different shapes and dimensions, depending on the block size distribution of the copolymers and the solvent system being used. In general, spherical micelles were observed when methanol, a nonsolvent for the polystyrene block, was added to a copolymer solution in dichloromethane. Micellization was observed when the added methanol concentration was approximately 30%. When toluene, a nonsolvent for the poly(4-vinylpyridine) block, was added to the copolymer solution in dichloromethane, micelles with different interesting shapes were observed. For copolymers with larger PVP block size, spherical micelles were observed. When the relative block size of the PVP block was reduced, the micelles gradually changed to disk or vesicle structures and then to rodlike structures. The rhenium complex can act as a luminescent probe in the resulting nanosized micelles and provide sufficient contrast for electron microscopic studies. Significant changes in luminescence spectra were observed after the micellization.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/langmuiren_HK
dc.relation.ispartofLangmuiren_HK
dc.titleNanosized micelles formed by the self-assembly of amphiphilic block copolymers with luminescent rhenium complexesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0743-7463&volume=19&issue=6&spage=2485&epage=2490&date=2003&atitle=Nanosized+micelles+formed+by+the+self-assembly+of+amphiphilic+block+copolymers+with+luminescent+rhenium+complexesen_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/la020773wen_HK
dc.identifier.scopuseid_2-s2.0-0037453656en_HK
dc.identifier.hkuros81180en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037453656&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume19en_HK
dc.identifier.issue6en_HK
dc.identifier.spage2485en_HK
dc.identifier.epage2490en_HK
dc.identifier.isiWOS:000181562700087-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHou, S=7201471840en_HK
dc.identifier.scopusauthoridMan, KYK=8051698900en_HK
dc.identifier.scopusauthoridChan, WK=13310083000en_HK

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