The measured reactivity indices (β-values) of heterocoerdianthrones (HCDs) in self-sensitized photoperoxidation indicate a high reactivity toward singlet-oxygen. Such a high reactivity is not only due to an effective singlet-oxygen production due to the highly fluorescent character, but also due to a strained structure, as predicted by a molecular calculation. On the other hand, the large thermal stability of their endoperoxides (POs), revealed by the large activation energy in thermal decomposition, is also explained by considering the strained structure of the parent HCDs. As a prospect of solar synthesis, one of the HCD derivatives was applied to a photosensitizer for singlet-oxygen oxidation.
在自敏化光过氧化反应中测得的杂
环丁二烯蒽(HCDs)反应指数(β 值)表明,它们对单氧具有很高的反应活性。如此高的反应活性不仅是由于高荧光性所导致的有效单气氧生成,也是由于分子计算所预测的应变结构。另一方面,考虑到母体 HCDs 的应变结构,它们的内过氧化物(POs)在热分解中的巨大活化能所显示的巨大热稳定性也可以得到解释。考虑到太阳能合成的前景,其中一种 HCD 衍
生物被应用于单氧氧化的光敏剂。