Polymer Bulletin

, Volume 70, Issue 2, pp 593–601 | Cite as

Block copolymer photonic mesogels exhibiting dual volume phase transitions

  • Yulim Jang
  • Jeyon Chung
  • Sungmin Lee
  • Hyunmin Lim
  • Heeyoel Baek
  • Youngjong Kang
Original Paper

Abstract

Photonic mesogel films exhibiting brilliant photonic colors were prepared by selective swelling of polystyrene-b-quaternized poly(2-vinyl pyridine) (PS-b-QP2VP) block copolymers, and their volume phase transition behaviors were investigated in various solvent mixtures. The swollen PS-b-QP2VP lamellae segregate into mesophased gels where the highly swollen QP2VP gel layers are alternating with the glassy PS layers and exhibit strong responsive photonic colors in visible regime. Utilizing the changes of photonic stop bands, the swelling behaviors of the photonic mesogels were able to be monitored with sub-nanometer accuracy. Unusual dual volume phase transitions were observed at certain conditions where hydrogen bonding became significantly strong.

Keywords

Photonic crystal Mesogel Volume phase transitions 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Yulim Jang
    • 1
  • Jeyon Chung
    • 1
  • Sungmin Lee
    • 1
  • Hyunmin Lim
    • 1
  • Heeyoel Baek
    • 1
  • Youngjong Kang
    • 1
  1. 1.Department of Chemistry, Research Institute for Natural Sciences, and Institute of Nano Science and TechnologyHanyang UniversitySeoulSouth Korea

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