Strongly phase-segregating block copolymers with sub-20 nm features

Kristian Kempe; Kato L. Killops; Justin E. Poelma; Hyunjung Jung; Joona Bang; Richard Hoogenboom; Helen Tran; Craig J. Hawker; Ulrich S. Schubert; Luis M. Campos

doi:10.1021/mz400309d

Strongly phase-segregating block copolymers with sub-20 nm features

Kristian Kempe, Kato L. Killops, Justin E. Poelma, Hyunjung Jung, Joona Bang, Richard Hoogenboom, Helen Tran, Craig J. Hawker, Ulrich S. Schubert, Luis M. Campos

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

27 Citations (Scopus)

Abstract

The modular synthesis and lithographic potential of diblock copolymers based on polystyrene-block-poly(2-ethyl-2-oxazoline) (PS-b-PEtOx) are highlighted herein. Controlled radical and living cationic polymerization techniques were utilized to synthesize hydrophobic PS and hydrophilic PEtOx building block of varying molar mass. Subsequently, "click" chemistry was used to couple the blocks and obtain a family of PS-b-PEtOx polymers. The influence of molar mass, composition, and thin-film thickness on the microphase-segregated morphology and orientation were investigated with atomic force microscopy (AFM) and grazing incidence small-angle X-ray scattering (GISAXS). Dense hexagonal arrays of cylindrical nanodomains normal to the substrate, having a periodicity of less than 20 nm were obtained.

Original language	English
Pages (from-to)	677-682
Number of pages	6
Journal	ACS Macro Letters
Volume	2
Issue number	8
DOIs	https://doi.org/10.1021/mz400309d
Publication status	Published - 2013 Aug 20

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/mz400309d

Cite this

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title = "Strongly phase-segregating block copolymers with sub-20 nm features",

abstract = "The modular synthesis and lithographic potential of diblock copolymers based on polystyrene-block-poly(2-ethyl-2-oxazoline) (PS-b-PEtOx) are highlighted herein. Controlled radical and living cationic polymerization techniques were utilized to synthesize hydrophobic PS and hydrophilic PEtOx building block of varying molar mass. Subsequently, {"}click{"} chemistry was used to couple the blocks and obtain a family of PS-b-PEtOx polymers. The influence of molar mass, composition, and thin-film thickness on the microphase-segregated morphology and orientation were investigated with atomic force microscopy (AFM) and grazing incidence small-angle X-ray scattering (GISAXS). Dense hexagonal arrays of cylindrical nanodomains normal to the substrate, having a periodicity of less than 20 nm were obtained.",

author = "Kristian Kempe and Killops, {Kato L.} and Poelma, {Justin E.} and Hyunjung Jung and Joona Bang and Richard Hoogenboom and Helen Tran and Hawker, {Craig J.} and Schubert, {Ulrich S.} and Campos, {Luis M.}",

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doi = "10.1021/mz400309d",

language = "English",

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journal = "ACS Macro Letters",

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TY - JOUR

T1 - Strongly phase-segregating block copolymers with sub-20 nm features

AU - Kempe, Kristian

AU - Killops, Kato L.

AU - Poelma, Justin E.

AU - Jung, Hyunjung

AU - Bang, Joona

AU - Hoogenboom, Richard

AU - Tran, Helen

AU - Hawker, Craig J.

AU - Schubert, Ulrich S.

AU - Campos, Luis M.

PY - 2013/8/20

Y1 - 2013/8/20

N2 - The modular synthesis and lithographic potential of diblock copolymers based on polystyrene-block-poly(2-ethyl-2-oxazoline) (PS-b-PEtOx) are highlighted herein. Controlled radical and living cationic polymerization techniques were utilized to synthesize hydrophobic PS and hydrophilic PEtOx building block of varying molar mass. Subsequently, "click" chemistry was used to couple the blocks and obtain a family of PS-b-PEtOx polymers. The influence of molar mass, composition, and thin-film thickness on the microphase-segregated morphology and orientation were investigated with atomic force microscopy (AFM) and grazing incidence small-angle X-ray scattering (GISAXS). Dense hexagonal arrays of cylindrical nanodomains normal to the substrate, having a periodicity of less than 20 nm were obtained.

AB - The modular synthesis and lithographic potential of diblock copolymers based on polystyrene-block-poly(2-ethyl-2-oxazoline) (PS-b-PEtOx) are highlighted herein. Controlled radical and living cationic polymerization techniques were utilized to synthesize hydrophobic PS and hydrophilic PEtOx building block of varying molar mass. Subsequently, "click" chemistry was used to couple the blocks and obtain a family of PS-b-PEtOx polymers. The influence of molar mass, composition, and thin-film thickness on the microphase-segregated morphology and orientation were investigated with atomic force microscopy (AFM) and grazing incidence small-angle X-ray scattering (GISAXS). Dense hexagonal arrays of cylindrical nanodomains normal to the substrate, having a periodicity of less than 20 nm were obtained.

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U2 - 10.1021/mz400309d

DO - 10.1021/mz400309d

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EP - 682

JO - ACS Macro Letters

JF - ACS Macro Letters

IS - 8

ER -

Strongly phase-segregating block copolymers with sub-20 nm features

Abstract

ASJC Scopus subject areas

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