Orientation of Suspended Polar Organic Nanocrystals in Magnetic Fields: Effect of Magnetic Field Configuration

Yuji Kaneko, Takashi Fukuda, Tsunenobu Onodera, Hitoshi Kasai, Shuji Okada, Hidetoshi Oikawa, Hachiro Nakanishi, Hiro Matsuda

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The absorption spectral changes of trans-4-[4-(dimethylamino)]stilbazolium toluenesulfonate (DAST) nanocrystals dispersed in decahydronaphthalene were observed under magnetic fields in three different optical configurations. The absorbance only increased in the Voigt configuration, in which the light polarization was parallel to the magnetic field, indicating that the absorption transition moment of the nanocrystals is parallel to the magnetic field. From the arrangement of the aromatic rings in the crystals, the nanocrystal orientation under the magnetic field was concluded to be due to the diamagnetic anisotropy of the crystals.

Original languageEnglish
Pages (from-to)L1343-L1345
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume42
Issue number11 A
Publication statusPublished - 2003 Nov 1

Keywords

  • Absorption spectrum
  • DAST nanocrystal disperse system
  • Diamagnetic interaction
  • Magnetic field configuration
  • Magnetic field orientation

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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