Morphology change of asymmetric diblock copolymer micellar films during solvent annealing

Xue Li; Juan Peng; Yan Wen; Dong Ha Kim; Wolfgang Knoll

doi:10.1016/j.polymer.2007.02.054

Morphology change of asymmetric diblock copolymer micellar films during solvent annealing

Xue Li, Juan Peng, Yan Wen, Dong Ha Kim, Wolfgang Knoll

Department of Chemistry & Nanoscience

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

42 Scopus citations

Abstract

The morphology change of an asymmetric polystyrene-block-poly(2-vinyl pyridine) (PS-b-PVP) diblock copolymer micellar film was investigated during solvent vapor annealing in chloroform. Initially, smaller islands in nanometer-length scale form at the film surface. Further annealing results in the growth of the islands composed of the PS-b-PVP cylinders above the bottom brush layer. For comparison, a film of the block copolymer prepared from THF solution (without micellar structure) was also studied. The surface morphology of the film from THF evolves via spinodal dewetting mechanism during solvent vapor annealing. At a long time solvent vapor annealing, the two kinds of the films display the same surface morphologies, which are determined by the interplay between the surface field and autodewetting.

Original language	English
Pages (from-to)	2434-2443
Number of pages	10
Journal	Polymer
Volume	48
Issue number	8
DOIs	https://doi.org/10.1016/j.polymer.2007.02.054
State	Published - 5 Apr 2007

Bibliographical note

Funding Information:
This work was funded by the National Natural Science Foundation of China (20674030), Shandong Natural Science Foundation (2006ZRB01092) and the Doctorial Foundation of University of Jinan, PR China (B0541). Financial support in part from Deutsche Forschungsgemeinschaft (DFG) within the Schwerpunktprogramm 1165 (SPP 1165: KN 224/15-1) and Max Planck Gesellschaft (MPG) is acknowledged. This work was supported by Seoul Research and Business Development Program (10816).

Keywords

Asymmetric diblock copolymer
Morphology change
Solvent annealing

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title = "Morphology change of asymmetric diblock copolymer micellar films during solvent annealing",

abstract = "The morphology change of an asymmetric polystyrene-block-poly(2-vinyl pyridine) (PS-b-PVP) diblock copolymer micellar film was investigated during solvent vapor annealing in chloroform. Initially, smaller islands in nanometer-length scale form at the film surface. Further annealing results in the growth of the islands composed of the PS-b-PVP cylinders above the bottom brush layer. For comparison, a film of the block copolymer prepared from THF solution (without micellar structure) was also studied. The surface morphology of the film from THF evolves via spinodal dewetting mechanism during solvent vapor annealing. At a long time solvent vapor annealing, the two kinds of the films display the same surface morphologies, which are determined by the interplay between the surface field and autodewetting.",

keywords = "Asymmetric diblock copolymer, Morphology change, Solvent annealing",

author = "Xue Li and Juan Peng and Yan Wen and Kim, {Dong Ha} and Wolfgang Knoll",

note = "Funding Information: This work was funded by the National Natural Science Foundation of China (20674030), Shandong Natural Science Foundation (2006ZRB01092) and the Doctorial Foundation of University of Jinan, PR China (B0541). Financial support in part from Deutsche Forschungsgemeinschaft (DFG) within the Schwerpunktprogramm 1165 (SPP 1165: KN 224/15-1) and Max Planck Gesellschaft (MPG) is acknowledged. This work was supported by Seoul Research and Business Development Program (10816).",

year = "2007",

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doi = "10.1016/j.polymer.2007.02.054",

language = "English",

volume = "48",

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T1 - Morphology change of asymmetric diblock copolymer micellar films during solvent annealing

AU - Li, Xue

AU - Peng, Juan

AU - Wen, Yan

AU - Kim, Dong Ha

AU - Knoll, Wolfgang

N1 - Funding Information: This work was funded by the National Natural Science Foundation of China (20674030), Shandong Natural Science Foundation (2006ZRB01092) and the Doctorial Foundation of University of Jinan, PR China (B0541). Financial support in part from Deutsche Forschungsgemeinschaft (DFG) within the Schwerpunktprogramm 1165 (SPP 1165: KN 224/15-1) and Max Planck Gesellschaft (MPG) is acknowledged. This work was supported by Seoul Research and Business Development Program (10816).

PY - 2007/4/5

Y1 - 2007/4/5

N2 - The morphology change of an asymmetric polystyrene-block-poly(2-vinyl pyridine) (PS-b-PVP) diblock copolymer micellar film was investigated during solvent vapor annealing in chloroform. Initially, smaller islands in nanometer-length scale form at the film surface. Further annealing results in the growth of the islands composed of the PS-b-PVP cylinders above the bottom brush layer. For comparison, a film of the block copolymer prepared from THF solution (without micellar structure) was also studied. The surface morphology of the film from THF evolves via spinodal dewetting mechanism during solvent vapor annealing. At a long time solvent vapor annealing, the two kinds of the films display the same surface morphologies, which are determined by the interplay between the surface field and autodewetting.

AB - The morphology change of an asymmetric polystyrene-block-poly(2-vinyl pyridine) (PS-b-PVP) diblock copolymer micellar film was investigated during solvent vapor annealing in chloroform. Initially, smaller islands in nanometer-length scale form at the film surface. Further annealing results in the growth of the islands composed of the PS-b-PVP cylinders above the bottom brush layer. For comparison, a film of the block copolymer prepared from THF solution (without micellar structure) was also studied. The surface morphology of the film from THF evolves via spinodal dewetting mechanism during solvent vapor annealing. At a long time solvent vapor annealing, the two kinds of the films display the same surface morphologies, which are determined by the interplay between the surface field and autodewetting.

KW - Asymmetric diblock copolymer

KW - Morphology change

KW - Solvent annealing

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DO - 10.1016/j.polymer.2007.02.054

M3 - Article

AN - SCOPUS:33947606178

SN - 0032-3861

VL - 48

SP - 2434

EP - 2443

JO - Polymer

JF - Polymer

IS - 8

ER -

Morphology change of asymmetric diblock copolymer micellar films during solvent annealing

Abstract

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Keywords

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