Porphyrin derivatives with four two-photon absorbing 2,1,3-benzothiadiazole chromophores at the meso positions provide large two-photon absorption cross-sections up to 735 GM as well as large quantum yields of one-photon singlet oxygen sensitization of ca. 0.7, leading to generation of singlet oxygen by two-photon excitation of 800 nm. The two-photon singlet oxygen sensitization is discussed on the basis of a parameter of the normalized oxygen luminescence intensity obtained from the two-photon experiment.
在中位具有四个双光子吸收
2,1,3-苯并噻二唑发色团的
卟啉衍
生物可提供高达 735 GM 的大双光子吸收截面,以及约 0.7 的大单光子单线态
氧敏化量子产率,从而在 800 nm 的双光子激发下产生单线态
氧。根据从双光子实验中获得的归一化
氧发光强度参数,对双光子单线态
氧敏化进行了讨论。