Polymer Vesicles as Robust Scaffolds for the Directed Assembly of Highly Crystalline Nanocrystals †

Handle URI:
http://hdl.handle.net/10754/599216
Title:
Polymer Vesicles as Robust Scaffolds for the Directed Assembly of Highly Crystalline Nanocrystals †
Authors:
Wang, Mingfeng; Zhang, Meng; Siegers, Conrad; Scholes, Gregory D.; Winnik, Mitchell A.
Abstract:
We report the incorporation of various inorganic nanoparticles (NPs) (PbS, LaOF, LaF3, and TiO2, each capped by oleic acid, and CdSe/ZnS core/shell QDs capped by trioctylphosphine oxide) into vesicles (d = 70-150 nm) formed by a sample of poly(styrene-b-acrylic acid) (PS4o4-b-PAA 62, where the subscripts refer to the degree of polymerization) in mixtures of tetrahydrofuran (THF), dioxane, and water. The block copolymer formed mixtures of crew-cut micelles and vesicles with some enhancement of the vesicle population when the NPs were present. The vesicle fraction could be isolated by selective sedimentation via centrifugation, followed by redispersion in water. The NPs appeared to be incorporated into the PAA layers on the internal and external walls of the vesicles (strongly favoring the former). NPs on the exterior surface of the vesicles could be removed completely by treating the samples with a solution of ethylenediaminetetraacetate (EDTA) in water. The triangular nanoplatelets of LaF3 behaved differently. Stacks of these platelets were incorporated into solid colloidal entities, similar in size to the empty vesicles that accompanied them, during the coassembly as water was added to the polymer/LaF3/THF/ dioxane mixture. © 2009 American Chemical Society.
Citation:
Wang M, Zhang M, Siegers C, Scholes GD, Winnik MA (2009) Polymer Vesicles as Robust Scaffolds for the Directed Assembly of Highly Crystalline Nanocrystals † . Langmuir 25: 13703–13711. Available: http://dx.doi.org/10.1021/la900523s.
Publisher:
American Chemical Society (ACS)
Journal:
Langmuir
KAUST Grant Number:
KUS-F1-030-21
Issue Date:
15-Dec-2009
DOI:
10.1021/la900523s
PubMed ID:
19449823
Type:
Article
ISSN:
0743-7463; 1520-5827
Sponsors:
We are grateful to Dr. Karolina Fritz for the synthesis of PbS QDs and to Dr. Margret Hines at Evident Technology for providing the CdSe/ZnS core/shell QDs. We thank NSERC Canada for the support of this research. C.S. is grateful to the King Abdullah University of Science and Technology (KAUST) for a postdoctoral research grant (Award No, KUS-F1-030-21).
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorWang, Mingfengen
dc.contributor.authorZhang, Mengen
dc.contributor.authorSiegers, Conraden
dc.contributor.authorScholes, Gregory D.en
dc.contributor.authorWinnik, Mitchell A.en
dc.date.accessioned2016-02-25T13:55:05Zen
dc.date.available2016-02-25T13:55:05Zen
dc.date.issued2009-12-15en
dc.identifier.citationWang M, Zhang M, Siegers C, Scholes GD, Winnik MA (2009) Polymer Vesicles as Robust Scaffolds for the Directed Assembly of Highly Crystalline Nanocrystals † . Langmuir 25: 13703–13711. Available: http://dx.doi.org/10.1021/la900523s.en
dc.identifier.issn0743-7463en
dc.identifier.issn1520-5827en
dc.identifier.pmid19449823en
dc.identifier.doi10.1021/la900523sen
dc.identifier.urihttp://hdl.handle.net/10754/599216en
dc.description.abstractWe report the incorporation of various inorganic nanoparticles (NPs) (PbS, LaOF, LaF3, and TiO2, each capped by oleic acid, and CdSe/ZnS core/shell QDs capped by trioctylphosphine oxide) into vesicles (d = 70-150 nm) formed by a sample of poly(styrene-b-acrylic acid) (PS4o4-b-PAA 62, where the subscripts refer to the degree of polymerization) in mixtures of tetrahydrofuran (THF), dioxane, and water. The block copolymer formed mixtures of crew-cut micelles and vesicles with some enhancement of the vesicle population when the NPs were present. The vesicle fraction could be isolated by selective sedimentation via centrifugation, followed by redispersion in water. The NPs appeared to be incorporated into the PAA layers on the internal and external walls of the vesicles (strongly favoring the former). NPs on the exterior surface of the vesicles could be removed completely by treating the samples with a solution of ethylenediaminetetraacetate (EDTA) in water. The triangular nanoplatelets of LaF3 behaved differently. Stacks of these platelets were incorporated into solid colloidal entities, similar in size to the empty vesicles that accompanied them, during the coassembly as water was added to the polymer/LaF3/THF/ dioxane mixture. © 2009 American Chemical Society.en
dc.description.sponsorshipWe are grateful to Dr. Karolina Fritz for the synthesis of PbS QDs and to Dr. Margret Hines at Evident Technology for providing the CdSe/ZnS core/shell QDs. We thank NSERC Canada for the support of this research. C.S. is grateful to the King Abdullah University of Science and Technology (KAUST) for a postdoctoral research grant (Award No, KUS-F1-030-21).en
dc.publisherAmerican Chemical Society (ACS)en
dc.titlePolymer Vesicles as Robust Scaffolds for the Directed Assembly of Highly Crystalline Nanocrystals †en
dc.typeArticleen
dc.identifier.journalLangmuiren
dc.contributor.institutionUniversity of Toronto, Toronto, Canadaen
kaust.grant.numberKUS-F1-030-21en
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