Polymeric one-dimensional reflectors based on self-organization of comb-shaped supramolecules

  • Harri Kosonen
  • , Sami Valkama
  • , Janne Ruokolainen
  • , Gerrit ten Brinke
  • , Olli Ikkala

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Polystyrene-block-poly(4-vinylpyridine) (PS-block-P4VP) diblock copolymer was complexed with dodecylbenzenesulfonic acid (DBSA), leading to comb-coil polymeric supramolecules PS-block-P4VP(DBSA)y (y = 1.0, 1.5, and 2.0). Complexes formed hierarchical lamellar structure with long period of ca. 1400 Å. Due to periodicity and refractive index contrast between the layers, transmission and reflectance measurements showed a relatively narrow incomplete bandgap at ca. 460 nm. The angular dependence of the bandgap was also studied using different angles (ø) relative to the surface normal. The mid-gap was blue-shifted when the incident angle was increased indicating that the lamellar structure was partly oriented by the surfaces of quartz glasses.
Original languageEnglish
Title of host publicationSymposium P — Self-Assembled Nanostructured Materials
EditorsC.J. Brinker, Y. Lu, M. Antonietti, C. Bai
PublisherMaterials Research Society
Pages87-92
DOIs
Publication statusPublished - 2003
MoE publication typeA4 Article in a conference publication
Event2003 MRS Spring Meeting & Exhibit - San Francisco, United States
Duration: 21 Apr 200325 Apr 2003

Publication series

SeriesMRS Online Proceedings
Volume775
ISSN1946-4274

Conference

Conference2003 MRS Spring Meeting & Exhibit
Country/TerritoryUnited States
CitySan Francisco
Period21/04/0325/04/03

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