The history of high-pressure ESR techniques applied to solution chemistry has been surveyed briefly, and our recent investigations have been reviewed. The results are summarized as follows: (1) The rate of spin exchange reactions of nitroxides is diffusion-controlled, and the acti-vation volume is closely related to that for diffusive processes. (2) The rates of spin-lattice re-laxation for the photo-reduced products of 2,5-di-tert-butyl-1,4-benzoquinone(2,5-DBQ) were estimated at various pressures. (3) From the pressure effects on the ESR signal, aspects of di-tert-butyl nitroxide(DTBN) included in cyclodextrins were inferred. (4) The information on the rotational motion of spin-labeled long-chain molecules in solutions was obtained from the anisotropic ESR signals.
|Number of pages||7|
|Journal||the review of high pressure science and technology|
|Publication status||Published - 1994|
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics