Heteroatom-centered free radicals some selected contributions by radiation chemistry

作者: Klaus-Dieter Asmus

DOI: 10.1016/S0167-6881(01)80016-1

关键词: PhotochemistryRadiolysisFlash photolysisHeteroatomAnilineRadicalChemistryRadical disproportionationResonance Raman spectroscopyRadiation chemistry

摘要: Publisher Summary The advent of time-resolved techniques such as pulse radiolysis and flash photolysis, allowed direct detection heteroatom on real time. reason that hetero-centered radicals have an electronic structure, most often they exhibit intense easily detectable optical absorptions in the UV, visible, near-IR. This chapter presents discusses some specially selected examples from solution studies well highlights general achievements basic concepts emerging therefrom. two important groups belonging to heteroatom-centered category—namely, those derived purines pyrimidines. There is also a discussion about entire family oxygen-centered radicals. description early days intermediates generated organic nitro nitroso compounds elementary redox processes. presentation recent results aminyl are amino acids, exemplifying diversity possible reactions seemingly simple type third example aniline aims demonstrate potential resonance Raman spectroscopy. All these N-centered focus importance acid/base properties system, particular, draws attention spin charge distribution implications chemistry radical species.

参考文章(132)
L G Forni, R L Willson, Thiyl and phenoxyl free radicals and NADH. Direct observation of one-electron oxidation. Biochemical Journal. ,vol. 240, pp. 897- 903 ,(1986) , 10.1042/BJ2400897
Janet Newlin Hauber, Anticarcinogens, Oddvar F. Nygaard, Michael G. Simic, Radioprotectors and anticarcinogens Academic Press. ,(1983)
Zeev B. Alfassi, S-centered radicals Wiley. ,(1999)
Zeev B. Alfassi, N-centered radicals Wiley. ,(1998)
E. Janata, D. Veltwisch, K.-D. Asmus, Submicrosecond pulse radiolysis conductivity measurements in aqueous solutions—II Radiation Physics and Chemistry (1977). ,vol. 16, pp. 43- 49 ,(1980) , 10.1016/0146-5724(80)90112-0
J. Schwinn H. Sprinz K. Drossler S. Le, Thiyl radical-induced cis/trans-isomerization of methyl linoleate in methanol and of linoleic acid residues in liposomes. International Journal of Radiation Biology. ,vol. 74, pp. 359- 365 ,(1998) , 10.1080/095530098141492
H. Moeckel, M. Bonifacic, K. D. Asmus, Formation of positive ions in the reaction of disulfides with hydroxyl radicals in aqueous solution The Journal of Physical Chemistry. ,vol. 78, pp. 282- 284 ,(1974) , 10.1021/J100596A019
Timothy. Clark, Odd-electron .sigma. bonds Journal of the American Chemical Society. ,vol. 110, pp. 1672- 1678 ,(1988) , 10.1021/JA00214A003