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

Mingfeng Wang; Meng Zhang; Conrad Siegers; Gregory D. Scholes; Mitchell A. Winnik

doi:10.1021/la900523s

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

Mingfeng Wang, Meng Zhang, Conrad Siegers, Gregory D. Scholes, Mitchell A. Winnik

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

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.

Original language	English (US)
Pages (from-to)	13703-13711
Number of pages	9
Journal	Langmuir
Volume	25
Issue number	24
DOIs	https://doi.org/10.1021/la900523s
State	Published - Dec 15 2009
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-F1-030-21
Acknowledgements: 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).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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10.1021/la900523s

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@article{c783058c6e514270b6aba082dd2ddeac,

title = "Polymer Vesicles as Robust Scaffolds for the Directed Assembly of Highly Crystalline Nanocrystals †",

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. {\textcopyright} 2009 American Chemical Society.",

author = "Mingfeng Wang and Meng Zhang and Conrad Siegers and Scholes, {Gregory D.} and Winnik, {Mitchell A.}",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-F1-030-21 Acknowledgements: 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). This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2009",

month = dec,

day = "15",

doi = "10.1021/la900523s",

language = "English (US)",

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journal = "Langmuir",

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T1 - Polymer Vesicles as Robust Scaffolds for the Directed Assembly of Highly Crystalline Nanocrystals †

AU - Wang, Mingfeng

AU - Zhang, Meng

AU - Siegers, Conrad

AU - Scholes, Gregory D.

AU - Winnik, Mitchell A.

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-F1-030-21 Acknowledgements: 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). This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2009/12/15

Y1 - 2009/12/15

N2 - 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.

AB - 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.

UR - http://hdl.handle.net/10754/599216

UR - https://pubs.acs.org/doi/10.1021/la900523s

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U2 - 10.1021/la900523s

DO - 10.1021/la900523s

M3 - Article

C2 - 19449823

SN - 0743-7463

VL - 25

SP - 13703

EP - 13711

JO - Langmuir

JF - Langmuir

IS - 24

ER -

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

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