Reversible Photochemical Control of Singlet Oxygen Generation Using Diarylethene Photochromic Switches
作者:Lili Hou、Xiaoyan Zhang、Thomas C. Pijper、Wesley R. Browne、Ben L. Feringa
DOI:10.1021/ja4122473
日期:2014.1.22
Reversible noninvasive control over the generation of singlet oxygen is demonstrated in a bicomponent system comprising a diarylethene photochromic switch and a porphyrin photosensitizer by selective irradiation at distinct wavelengths. The efficient generation of singlet oxygen by the photosensitizer is observed when the diarylethene unit is in the colorless open form. Singlet oxygen generation is
在包含二芳基乙烯光致变色开关和卟啉光敏剂的双组分系统中,通过不同波长的选择性照射,证明了对单线态氧产生的可逆无创控制。当二芳基乙烯单元为无色开放形式时,观察到光敏剂有效产生单线态氧。当二芳基乙烯转化为闭合形式时,没有观察到单线态氧的产生。用可见光 (>470 nm) 照射封闭形式导致卟啉敏化剂的单线态氧生成能力完全恢复。