Analysis of the electron transfer at lipid membrane/water interface by a slab optical waveguide spectroscopy

用平板波导光谱法观察了脂膜/水界面的电子转移。在薄玻璃板上形成一层脂质膜，并引入激发光。因此，通过导光的倏逝波可以选择性地观察到脂质膜内部的吸收光谱。姜黄素是一种亲脂性抗氧化剂，将其分布到脂质膜中，观察到溶解在水中的H_2O_2通过脂质膜/水界面发生了电子转移反应。

An electron transfer at lipid membrane/water interface was observed by a slab optical waveguide spectroscopy. A lipid membrane was formed on a thin glass plate, into which an excitation light was introduced. Thus, an absorption spectrum of the inside of lipid membrane was selectively observed by an evanescent wave of the guiding light. Curcumin, on of the lipophilic antioxidants, was distributed into the lipid membrane, and the oxidation, i.e. electron transfer reaction through the lipid membrane/water interface between H_2O_2 dissolved in water was observed.