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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.48 [2010] >
IJPAP Vol.48(09) [September 2010] >
| Title: | EPR study of free radicals in amino acid derivatives gamma-irradiated at 300 K |
| Authors: | Aydin, Murat |
| Keywords: | EPR
Amino acid derivatives
Gamma-irradiation
Free radicals |
| Issue Date: | Sep-2010 |
| Publisher: | CSIR |
| Abstract: | Electron
paramagnetic resonance spectroscopy has been used to study the free radicals in
N-acetyl-l-leucine
methyl ester and N-acetyl-l-glutamic
acid powders gamma-irradiated at room temperature (300 K). It has been found
that gamma-irradiation produces the (CH3)2ĊCH2CH(NHCOCH3)COOCH3
radical in the first and the HOOCCH2CH2Ċ(NHCOCH3)COOH
radical in the second compounds. The g
values of the radicals and the hyperfine coupling constants of the free
electron with the environmental methyl, methylene protons and 14N
nucleus have been determined. Both free radicals are found to be stable without
almost intensity diminution for five months at room temperature. The results
have been found to be in good agreement with the existing literature data. |
| Page(s): | 611-614 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.48(09) [September 2010]
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