Regiospecific accumulation of photofunctional units at microphase segregation interface of amphiphilic diblock copolymer

Sadayuki Asaoka, Tomohisa Miyatani, Motonori Komura, Tomokazu Iyoda, Yoshinori Nishikitani, Takaya Kubo, Souichi Uchida

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The amphiphilic diblock copolymer of poly(ethylene oxide) (PEO) and poly(methacrylate) bearing azobenzene liquid crystalline units (PMA(Az)) gave a well-aligned cylindrical nanostructure, in which both PEO and PMA domains were bicontinuous throughout the film thickness. A point-functionalized block copolymer with photo- and electrochemically active perylenediimide PEO 114-Jb-pery-Jb-PMA(Az)n was synthesized by atom transfer radical polymerization with narrow polydispersity of 1.15. The spin-cast film from chloroform solution gave a hexagonally aligned but mono-directionally distorted cylindrical nanostructure throughout the film thickness. The fact that the relative intensity of the fluorescence at 638 nm, which is assigned as dimer emission of perylenediimide, was enhanced upon annealing implies that the strongly n-n stacked structure of perylenediimide was formed at the interface of PEO and PMA domains during the formation of aligned nanostructure.

Original languageEnglish
Title of host publicationPolymer Preprints, Japan
Pages4665-4666
Number of pages2
Volume55
Edition2
Publication statusPublished - 2006
Externally publishedYes
Event55th Society of Polymer Science Japan Symposium on Macromolecules - Toyama
Duration: 2006 Sep 202006 Sep 22

Other

Other55th Society of Polymer Science Japan Symposium on Macromolecules
CityToyama
Period06/9/2006/9/22

Keywords

  • Atom transfer radical polymerization
  • Microphase segregation interface
  • Regiospecific functionalization

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Asaoka, S., Miyatani, T., Komura, M., Iyoda, T., Nishikitani, Y., Kubo, T., & Uchida, S. (2006). Regiospecific accumulation of photofunctional units at microphase segregation interface of amphiphilic diblock copolymer. In Polymer Preprints, Japan (2 ed., Vol. 55, pp. 4665-4666)