Monophotonic ionization of silybin in ethanol solutions by 248nm laser light; Identification of transient intermediates

248nmレーザー光を用いたエタノール溶液中シリビンの一光子イオン化; 短寿命活性種の同定

Fu, H.*; 勝村 庸介; Lin, M.; 室屋 裕佐*; 端 邦樹 

Fu, H.*; Katsumura, Yosuke; Lin, M.; Muroya, Yusa*; Hata, Kuniki

It is demonstrated that silybin in ethanol solution is photoionized via a monophotonic process to give a solvated electron and a radical cation. Then the solvated electron reacts with SLB to form electron adduct SLB-H. The results suggest that the photolysis of flavonoid in ethanolic solutions can provide an efficient tool to study radical reactions of biomolecules with poor water-solubility.