PSII. Transient absorption studies in the presence of an electron acceptor and irradiating in the far‐red region evidenced an intramolecular electron transfer process. Visible and FT‐IR signatures indicate the formation of a hydrogen‐bonded phenoxyl radical in ZnPc II‐OH. This study sets the foundation for the utilization of a broader spectral window for multi‐electronic catalytic processes with one
最近发现含有叶绿素f (Chl f ) 的光系统 II (PSII) 在 727 nm 处吸收可以驱动水氧化,因此必须重新考虑P 680色素是驱动含氧光合作用的红色极限的教科书解释。合成了两个不同家族的不对称取代的 Zn 酞菁 (Pc),它们在 700-800 nm 光谱窗口中吸收并含有稠合的咪唑-苯基取代基或稠合的咪唑-羟基苯基,并将其表征为 Chl f /Tyrosine的仿生模型Z /组氨酸190PSII 的辅助因子。在电子受体存在下并在远红区照射下的瞬态吸收研究证明了分子内电子转移过程。可见光和 FT-IR 特征表明在 ZnPc II-OH 中形成了氢键的苯氧基自由基。这项研究为使用最强大和最有效的染料之一的多电子催化过程使用更宽的光谱窗口奠定了基础。
JP5656235
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Novel preparation of fluorinated isoindoles and their conversion to fluorinated benzoporphyrins
4,5,6,7-Tetrafluoroisoindole and their related compounds were prepared directly from the corresponding phthalonitriles by reduction of a hydride reagent such as DIBAL or catalytic hydrogenation in the presence of an acid. 4,5,6,7-Tetrafluoroisoindole was converted to fluorinated benzoporphyrins. (C) 2007 Elsevier Ltd. All rights reserved.