MICROELECTRODE-DETECTED ELECTRON-SPIN-RESONANCE (MEDESR) SIGNALS OF FREE-RADICALS IN ELECTROLYTE-SOLUTIONS

Authors
YOKOYAMA H SATOH T OHYANISHIGUCHI H KAMADA H KASAI N MATSUE T
Citation
H. Yokoyama et al., MICROELECTRODE-DETECTED ELECTRON-SPIN-RESONANCE (MEDESR) SIGNALS OF FREE-RADICALS IN ELECTROLYTE-SOLUTIONS, Chemistry Letters, (10), 1995, pp. 919-920
Citations number
6
Categorie Soggetti
Chemistry
Journal title
Chemistry Letters → ACNP
ISSN journal
03667022
Issue
10
Year of publication
1995
Pages
919 - 920
Database
ISI
SICI code
0366-7022(1995):10<919:ME(SOF>2.0.ZU;2-Z
Abstract
The ESR spectra of stable free radical in solution have first been det ected through potential change between two electrodes inserted in the solution. The working electrode (phi 50 mu m) was biased by a constant current source under microwave irradiation and modulated magnetic fie ld. The AC component of the potential on resonance was preamplified an d detected by a lockin amplifier. The sensitivity of this method, 5 X 10(6) spins/G, is 10(3) higher than those of conventional ESR spectrom eters.