Type of Publication: | Journal article |
Author: | Baier, Moritz C.; Huber, Johannes; Mecking, Stefan |
Year of publication: | 2009 |
Published in: | Journal of the American Chemical Society ; 131 (2009), 40. - pp. 14267-14273. - ISSN 0002-7863. - eISSN 1520-5126 |
Pubmed ID: | 19764722 |
DOI (citable link): | https://dx.doi.org/10.1021/ja905077c |
Summary: |
Highly fluorescent conjugated polymer nanoparticles were prepared directly by polymerization in aqueous miniemulsion, employing Glaser coupling polymerization as a suitable step-growth reaction. A 4,4′-dinonyl-2,2′-bipyridine-modified catalyst was found to be suited for the polymerization in the aqueous heterophase system. Nanoparticles of poly(arylene diethynylenes) (arylene = 2,5-dialkyoxy phenylenes and 9,9′-dihexyl fluorene) with molecular weights in the range of Mn 104 to 105 g mol−1 and with sizes of ≤30 nm, as observed by TEM, result. N,N′-Di(4-ethynylphenyl)-1,7-di[4-(1,1,3,3-tetramethylbutyl)phenoxy]perylene-3,4:9,10-tetracarboxdiimide or 2,7-diethynylfluorenone was converted completely during the heterophase polymerization to afford colloidally stable nanoparticles of poly(arylene diethynylenes) with 0.1−2 mol % covalently incorporated perylene dye and 2−9 mol % of covalently incorporated fluorenone dye, respectively. Fluorescence spectroscopy of the aqueous dispersions reveals an efficient energy transfer to the dye in the nanoparticles, which enables a variation of the luminescence emission color between red (λem (max.) ca. 650 nm) and the green emission of the nanoparticles without dye.
|
Subject (DDC): | 540 Chemistry |
Bibliography of Konstanz: | Yes |
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |
BAIER, Moritz C., Johannes HUBER, Stefan MECKING, 2009. Fluorescent conjugated polymer nanoparticles by polymerization in miniemulsion. In: Journal of the American Chemical Society. 131(40), pp. 14267-14273. ISSN 0002-7863. eISSN 1520-5126. Available under: doi: 10.1021/ja905077c
@article{Baier2009Fluor-1109, title={Fluorescent conjugated polymer nanoparticles by polymerization in miniemulsion}, year={2009}, doi={10.1021/ja905077c}, number={40}, volume={131}, issn={0002-7863}, journal={Journal of the American Chemical Society}, pages={14267--14273}, author={Baier, Moritz C. and Huber, Johannes and Mecking, Stefan} }
<rdf:RDF xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:void="http://rdfs.org/ns/void#" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/1109"> <dcterms:issued>2009</dcterms:issued> <dcterms:bibliographicCitation>First publ. in: Journal of the American Chemical Society 131 (2009), 40, pp. 14267-14273</dcterms:bibliographicCitation> <dc:creator>Baier, Moritz C.</dc:creator> <dcterms:abstract xml:lang="eng">Highly fluorescent conjugated polymer nanoparticles were prepared directly by polymerization in aqueous miniemulsion, employing Glaser coupling polymerization as a suitable step-growth reaction. A 4,4′-dinonyl-2,2′-bipyridine-modified catalyst was found to be suited for the polymerization in the aqueous heterophase system. Nanoparticles of poly(arylene diethynylenes) (arylene = 2,5-dialkyoxy phenylenes and 9,9′-dihexyl fluorene) with molecular weights in the range of Mn 104 to 105 g mol−1 and with sizes of ≤30 nm, as observed by TEM, result. N,N′-Di(4-ethynylphenyl)-1,7-di[4-(1,1,3,3-tetramethylbutyl)phenoxy]perylene-3,4:9,10-tetracarboxdiimide or 2,7-diethynylfluorenone was converted completely during the heterophase polymerization to afford colloidally stable nanoparticles of poly(arylene diethynylenes) with 0.1−2 mol % covalently incorporated perylene dye and 2−9 mol % of covalently incorporated fluorenone dye, respectively. Fluorescence spectroscopy of the aqueous dispersions reveals an efficient energy transfer to the dye in the nanoparticles, which enables a variation of the luminescence emission color between red (λem (max.) ca. 650 nm) and the green emission of the nanoparticles without dye.</dcterms:abstract> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <dc:contributor>Huber, Johannes</dc:contributor> <dc:creator>Mecking, Stefan</dc:creator> <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/> <dc:contributor>Mecking, Stefan</dc:contributor> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-22T17:55:17Z</dcterms:available> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-22T17:55:17Z</dc:date> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dc:contributor>Baier, Moritz C.</dc:contributor> <dc:creator>Huber, Johannes</dc:creator> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/1109"/> <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/29"/> <dc:rights>terms-of-use</dc:rights> <dcterms:title>Fluorescent conjugated polymer nanoparticles by polymerization in miniemulsion</dcterms:title> <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/rdf/resource/123456789/29"/> <dc:language>eng</dc:language> </rdf:Description> </rdf:RDF>