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Shin, Tae Joo
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A Morphological Transition of Inverse Mesophases of a Branched-Linear Block Copolymer Guided by Using Cosolvents

Author(s)
La, YunjuAn, Tae HyunShin, Tae JooPark, ChiyoungKim, Kyoung Taek
Issued Date
2015-09
DOI
10.1002/anie.201503551
URI
https://scholarworks.unist.ac.kr/handle/201301/16607
Fulltext
http://onlinelibrary.wiley.com/doi/10.1002/anie.201503551/abstract;jsessionid=B3AE4C9C67B57A2A393D77B30869F2A4.f01t02
Citation
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.54, no.36, pp.10483 - 10487
Abstract
We report here a strategy for influencing the phase and lattice of the inverse mesophases of a single branched-linear block copolymer (BCP) in solution which does not require changing the structure of the BCP. The phase of the self-assembled structures of the block copolymer can be controlled ranging from bilayer structures of positive curvature (polymersomes) to inverse mesophases (triply periodic minimal surfaces and inverse hexagonal structures) by adjusting the solvent used for self-assembly. By using solvent mixtures to dissolve the block copolymer we were able to systematically change the affinity of the solvent toward the polystyrene block, which resulted in the formation of inverse mesophases with the desired lattice by self-assembly of a single branched-linear block copolymer. Our method was also applied to a new solution self-assembly method for a branched-linear block copolymer on a stationary substrate under humidity, which resulted in the formation of large mesoporous films. Our results constitute the first controlled transition of the inverse mesophases of block copolymers by adjusting the solvent composition.
Publisher
WILEY-V C H VERLAG GMBH
ISSN
1433-7851
Keyword (Author)
block copolymersinverse mesophasesmesoporous structuresminimal surfacesself-assembly
Keyword
DIBLOCK COPOLYMERSBICONTINUOUS NANOSPHERESCOMPLEX MORPHOLOGIESINTERNAL STRUCTUREHYDROPHILIC BLOCKCUBIC PHASESSIZE CONTROLWATERNANOPARTICLESPARTICLES

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