Effects of magnetic field on water investigated with fluorescent probes

Ko Higashitani, Jun Oshitani, Norio Ohmura

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Aqueous solutions with dissolved fluorescent probes were exposed to a magnetic field, and the effects of the magnetic exposure were investigated by measuring the fluorescence emission intensity with a spectrofluorophotometer. The data were compared with those of magnetic exposure effects on colloidal solutions reported previously [K. Higashitani, K. Okuhara and S. Hatade, J. Colloid Interface Sci., 152 (1992) 125; K. Higashitani, H. Isari, K. Okuhara, A. Kage and S. Hatade, J. Colloid Interface Sci., 172 (1995) 383]. It is found that (1) the degree of magnetic effects increases with the magnetic exposure and becomes constant at a certain exposure time in the case of solutions of fluorescent probes with an alkyl chain, but no effect was observed for solutions of probes without an alkyl chain; (2) the magnetic effects decay with the concentration of alcohol in the solution, the solution temperature, and the standing time of the solution after the magnetic exposure; and (3) if it is presumed that an ordered structure of water molecules around the hydrophobic chain of probes is formed by the magnetic exposure, not only are the results in the present study but also are our previous results for colloidal particles explained consistently.

Original languageEnglish
Pages (from-to)167-173
Number of pages7
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume109
DOIs
Publication statusPublished - Apr 20 1996
Externally publishedYes

Fingerprint

Fluorescent Dyes
Magnetic fields
Water
probes
magnetic fields
water
magnetic effects
Colloids
colloids
alcohols
Alcohols
aqueous solutions
Fluorescence
fluorescence
decay
Molecules
molecules

Keywords

  • aqueous solutions
  • fluorescence
  • fluorescent probes
  • magnetic field effects
  • memory effect
  • water structure

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Effects of magnetic field on water investigated with fluorescent probes. / Higashitani, Ko; Oshitani, Jun; Ohmura, Norio.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 109, 20.04.1996, p. 167-173.

Research output: Contribution to journalArticle

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