Chinese Journal of Magnetic Resonance ›› 2001, Vol. 18 ›› Issue (4): 397-428.

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RETROSPECT FOR ESR STUDIES DURING THE PAST 50 YEARS IN CHINA

CHEN Dewen, XU Guangzhi   

  1. State Key Laboratory for Structural Chemistry of Stable and Unstable Spe cies, Institute of Chemistry, The Chinese Academy of Sciences, Beijing 100080, China
  • Received:2001-05-28 Revised:2001-06-26 Published:2001-12-05 Online:2001-12-05
  • Supported by:

    国家自然科学基金资助项目(No.39890390).

Abstract:

1. Studies on ESR instruments, detection methods and applications of  new techniques;
2. Studies on the fundamental theory concerning ESR;
Theoretical exploration to the mathematical; model, calculating and descri bi ng methods for quantitative interrelations between spin spectrum parameters, opt ical spectrum properties, crystal field parameters, magnetic behavior and bond p arameters of paramegnetic species by using the theories and methods of quantum m echanics, group theory and crystal field-ligand field theories. The substance includes: spin-orbital interaction and spin-spin interaction mechanism research ; Calculations for g-tensor, superfine coupling constants, optical spectrum levels and zero-field splitting parameters; Correlation of crystal field param eters with zero-field splitting parameters and g-tensor etc.. At the same  time, chemically induced dynamic electron polarization(CIDEP) as well as its mec hanisms were studied.
3. ESR studies on the inorganic and organic metal coordination compounds a nd inorganic catalysts;
3.1. Basic research on the metal coordination compounds and paramagnetic ions;
3.2. Catalysts and catalytic processes;
3.3. Inorganic solids;
4. Organic free radicals and ionic radicals;
4.1. Long-lived free radicals and ionic radicals;
4.2. Intermediates in organic reactions, mechanisms and kinetics;
4.3. Free radicals in photochemical processes;
4.4. Free radicals in electrode processes and in gas phase reactions;
5. Photoinduced electron transfer and interfacial photocatalysis, micelle  behavior, free radicals in imaging processes;
5.1. Photoinduced electron transfer and photocatalysis in disperse systems  and superfine particle interfaces;
5.2. Free radicals in photosensitization and imaging processes;
6. Studies on the free radicals in biology and life science;
6.1. Probe for especial methods to study biological free radicals; explore  into  the initiation mechanisms for pathological changes of organism and the therapeut ic effects with drugs;
6.2. Mechanism and therapy research for the tissue injury initiated by myocardia lischemia-reperfusion of animals;
6.3. Scavenging effect of medicines and natural antioxidants against free radica ls;
6.4. Phototherapy of some medicines against pathological changes;
7. Research of free radicals for other fields