Novel photo-induced aggregation behavior of a supramolecular system containing iron(III) magnetic ionic liquid and azobenzene

Takashiro Akitsu, Yasuaki Einaga

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

New photo-controllable supramolecular system containing magnetic ionic liquid (iron(III) chloride with 1-butyl-3-methylimidazolium chloride) and azobenzene has been prepared. Reversible structural changes due to cis-trans photoisomerization of azobenzene could be observed by means of resonance Raman and electronic spectroscopy. Field dependence of magnetic moment at 298 K exhibited paramagnetic behavior similar to pure iron(III) magnetic ionic liquid. Alternate irradiation of UV and visible light at 298 K resulted in a monotonous increase of magnetic moment. In analogy with previous study, the novel behavior can be explained as irreversible aggregation of paramagnetic iron(III) complexes forming a short-range order in the supramolecular system.

Original languageEnglish
Pages (from-to)1108-1110
Number of pages3
JournalInorganic Chemistry Communications
Volume9
Issue number11
DOIs
Publication statusPublished - 2006 Nov 1

Keywords

  • Azobenzene
  • Iron(III)
  • Magnetic ionic liquid
  • Photofunctional materials
  • Supramolecular chemistry

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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