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Kim, Kyoung Taek
KT Kim Group at UNIST
Research Interests
  • Polymer Chemistry
  • Organic Chemistry
  • Supramolecular Chemistry
  • Biopolymers

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

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Title
A Morphological Transition of Inverse Mesophases of a Branched-Linear Block Copolymer Guided by Using Cosolvents
Author
La, YunjuAn, Tae HyunShin, Tae JooPark, ChiyoungKim, Kyoung Taek
Issue Date
2015-09
Publisher
WILEY-V C H VERLAG GMBH
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.
URI
https://scholarworks.unist.ac.kr/handle/201301/16607
URL
http://onlinelibrary.wiley.com/doi/10.1002/anie.201503551/abstract;jsessionid=B3AE4C9C67B57A2A393D77B30869F2A4.f01t02
DOI
10.1002/anie.201503551
ISSN
1433-7851
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