@article{oai:repo.qst.go.jp:00049600,
 author = {岡, 壽崇 and 横谷, 明徳 and 藤井, 健太郎 and Kino, Yasushi and Sekine, Tsutomu and 岡 壽崇 and 横谷 明徳 and 藤井 健太郎},
 journal = {Applied Physics Letter},
 month = {Dec},
 note = {The physicochemical processes underlying the radiation sensitization of DNA by the K-shell pho-toabsorption of nitrogen and oxygen atoms are unclear. Accordingly, we evaluated electron para-magnetic resonance spectra of thin films of pyrimidine bases. By altering the substituents of the pyrimidine ring, we found a substituent effect on the yield of unpaired electrons induced by photo-absorption. The yield of the unpaired electrons of the DNA-base containing amino groups increased by the donation of electrons, and the yield of halogenated DNA-bases decreased by the withdrawal of electrons. These different physicochemical processes might affect DNA bases, leading to differ-
ences in DNA modification.},
 title = {Substituent effect on the yield of unpaired electrons in DNA bases studied by electron paramagnetic resonance},
 volume = {113},
 year = {2018}
}