Incorporation of a bromine atom into DNA-related molecules changes their electronic properties

DNA関連分子への臭素の取り込みが電子状態を変える

平戸 未彩紀* ; 横谷 明徳*; 馬場 祐治*  ; 森 聖治*; 藤井 健太郎*; 和田 真一*; 泉 雄大*; 芳賀 芳範   

Hirato, Misaki*; Yokoya, Akinari*; Baba, Yuji*; Mori, Seiji*; Fujii, Kentaro*; Wada, Shinichi*; Izumi, Yudai*; Haga, Yoshinori

To understand the mechanism underlying the high radio-sensitization of living cells possessing brominated genomic DNA, X-ray photoelectron spectroscopy was used. It was found that the bromine atom significantly reduced the energy gap between the valence and conduction states, although the core level states were not greatly affected.