Polyelectrolyte layered assemblies containing azobenzene-modified polymer and anionic cyclodextrins

Iwao Suzuki, Katsuhiko Sato, Masaki Koga, Qiang Chen, Jun ichi Anzai

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Sulfonated cyclodextrins (s-α-CyD and s-β-CyD) were employed for constructing photosensitive thin films containing azobenzene residues. Azobenzene-modified poly(allylamine hydrochloride) (Az-PAH) and s-α-CyD or s-β-CyD were deposited alternately on the surface of a quartz slide to prepare multilayer thin films. Az-PAH formed inclusion complex in the Az-PAH/s-α-CyD film but not in the Az-PAH/s-β-CyD film. The Az-PAH isomerized from E - to Z -isomer in the films under UV light irradiation, and the original E -form was recovered under visible light irradiation or thermally in dark. The thermal isomerization followed the first-order kinetics in the swelled films though the kinetics deviated from the first-order plot in the dry films. The host-guest complexation of Az-PAH and s-α-CyD in the film affected significantly on the photochemical and thermal isomerization.

Original languageEnglish
Pages (from-to)579-583
Number of pages5
JournalMaterials Science and Engineering C
Volume23
Issue number5
DOIs
Publication statusPublished - 2003 Oct 15

Keywords

  • Azobenzene
  • Cyclodextrin
  • Photoresponse
  • Polyelectrolyte multilayer film

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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