Striped, ellipsoidal particles by controlled assembly of diblock copolymers

Se Gyu Jang; Debra J. Audus; Daniel Klinger; Daniel V. Krogstad; Bumjoon J. Kim; Alexandre Cameron; Sang Woo Kim; Kris T. Delaney; Su Mi Hur; Kato L. Killops; Glenn H. Fredrickson; Edward J. Kramer; Craig J. Hawker

doi:10.1021/ja4019447

Striped, ellipsoidal particles by controlled assembly of diblock copolymers

Se Gyu Jang, Debra J. Audus, Daniel Klinger, Daniel V. Krogstad, Bumjoon J. Kim, Alexandre Cameron, Sang Woo Kim, Kris T. Delaney, Su Mi Hur, Kato L. Killops, Glenn H. Fredrickson, Edward J. Kramer, Craig J. Hawker

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

Abstract

Control of interfacial interactions leads to a dramatic change in shape and morphology for particles based on poly(styrene-b-2-vinylpyridine) diblock copolymers. Key to these changes is the addition of Au-based surfactant nanoparticles (SNPs) which are adsorbed at the interface between block copolymer-containing emulsion droplets and the surrounding amphiphilic surfactant to afford asymmetric, ellipsoid particles. The mechanism of formation for these novel nanostructures was investigated by systematically varying the volume fraction of SNPs, with the results showing the critical nature that the segregation of SNPs to specific interfaces plays in controlling structure. A theoretical description of the system allows the size distribution and aspect ratio of the asymmetric block copolymer colloidal particles to be correlated with the experimental results.

Original language	English (US)
Pages (from-to)	6649-6657
Number of pages	9
Journal	Journal of the American Chemical Society
Volume	135
Issue number	17
DOIs	https://doi.org/10.1021/ja4019447
State	Published - May 1 2013
Externally published	Yes

ASJC Scopus subject areas

Catalysis
General Chemistry
Biochemistry
Colloid and Surface Chemistry

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10.1021/ja4019447

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title = "Striped, ellipsoidal particles by controlled assembly of diblock copolymers",

abstract = "Control of interfacial interactions leads to a dramatic change in shape and morphology for particles based on poly(styrene-b-2-vinylpyridine) diblock copolymers. Key to these changes is the addition of Au-based surfactant nanoparticles (SNPs) which are adsorbed at the interface between block copolymer-containing emulsion droplets and the surrounding amphiphilic surfactant to afford asymmetric, ellipsoid particles. The mechanism of formation for these novel nanostructures was investigated by systematically varying the volume fraction of SNPs, with the results showing the critical nature that the segregation of SNPs to specific interfaces plays in controlling structure. A theoretical description of the system allows the size distribution and aspect ratio of the asymmetric block copolymer colloidal particles to be correlated with the experimental results.",

author = "Jang, {Se Gyu} and Audus, {Debra J.} and Daniel Klinger and Krogstad, {Daniel V.} and Kim, {Bumjoon J.} and Alexandre Cameron and Kim, {Sang Woo} and Delaney, {Kris T.} and Hur, {Su Mi} and Killops, {Kato L.} and Fredrickson, {Glenn H.} and Kramer, {Edward J.} and Hawker, {Craig J.}",

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TY - JOUR

T1 - Striped, ellipsoidal particles by controlled assembly of diblock copolymers

AU - Jang, Se Gyu

AU - Audus, Debra J.

AU - Klinger, Daniel

AU - Krogstad, Daniel V.

AU - Kim, Bumjoon J.

AU - Cameron, Alexandre

AU - Kim, Sang Woo

AU - Delaney, Kris T.

AU - Hur, Su Mi

AU - Killops, Kato L.

AU - Fredrickson, Glenn H.

AU - Kramer, Edward J.

AU - Hawker, Craig J.

PY - 2013/5/1

Y1 - 2013/5/1

N2 - Control of interfacial interactions leads to a dramatic change in shape and morphology for particles based on poly(styrene-b-2-vinylpyridine) diblock copolymers. Key to these changes is the addition of Au-based surfactant nanoparticles (SNPs) which are adsorbed at the interface between block copolymer-containing emulsion droplets and the surrounding amphiphilic surfactant to afford asymmetric, ellipsoid particles. The mechanism of formation for these novel nanostructures was investigated by systematically varying the volume fraction of SNPs, with the results showing the critical nature that the segregation of SNPs to specific interfaces plays in controlling structure. A theoretical description of the system allows the size distribution and aspect ratio of the asymmetric block copolymer colloidal particles to be correlated with the experimental results.

AB - Control of interfacial interactions leads to a dramatic change in shape and morphology for particles based on poly(styrene-b-2-vinylpyridine) diblock copolymers. Key to these changes is the addition of Au-based surfactant nanoparticles (SNPs) which are adsorbed at the interface between block copolymer-containing emulsion droplets and the surrounding amphiphilic surfactant to afford asymmetric, ellipsoid particles. The mechanism of formation for these novel nanostructures was investigated by systematically varying the volume fraction of SNPs, with the results showing the critical nature that the segregation of SNPs to specific interfaces plays in controlling structure. A theoretical description of the system allows the size distribution and aspect ratio of the asymmetric block copolymer colloidal particles to be correlated with the experimental results.

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ER -

Striped, ellipsoidal particles by controlled assembly of diblock copolymers

Abstract

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