八乙基卟啉钯的合成和静态光学测压系统研究

以透气性能良好的二甲基硅橡胶为基质，将溶有八乙基卟啉钯（ＰｄＯＥＰ）的硅橡胶溶液涂于铝板上，用３９５ｎｍ的紫外光源照射硅橡胶涂层，在不同的压力下，观察发光强度的变化。由于空气中的氧气有猝灭ＰｄＯＥＰ所发射的磷光，根据Ｓｔｅｒｎ－Ｖｏｌｍｅｒ方程（Ｉ０／Ｉ＝Ａ＋Ｂｐ／ｐ０）即发光强度与空气中的氧分压成反比，以环境压力为参考压力Ｐ０，其相应的光强为Ｉ０，其它压力Ｐ时所测光强是Ｉ，数据显示Ｉ０／Ｉ对Ｐ／     

八乙基卟啉的合成研究进展

八乙基卟啉以吡咯为合成前体,主要有２种基本合成路线,一是以５－甲基－３,４－二乙基－２－乙氧羰基吡咯为合成前体,由吡咯α位甲基的碳原子构成卟啉的次甲基桥,另一路线是以３,４－二乙基吡咯为合成前体经与甲醛缩合,并以醛碳原子构成卟啉的次甲基桥,本文详细地介绍了这些中间体和八乙基卟啉的合成,并对比较典型的６种全合成方法进行了评述。     

八乙基卟啉合成方法的改进

以丙酰乙酸乙酯和乙酰丙酮为起始原料，经Ｋｎｏｒｒ反应制得５－甲基－３－乙基－４－乙酰基－２ 乙氧羰基吡咯（３），（３）经α位甲基的溴化和胺解得α取代胺基吡咯（４），（４）再经酸催化成环得化合物乙酰取代卟啉（５），最后使化合物（５）的乙酰基还原等五步操作合成了标题化合物，全程收率２６％     

Molecular Mechanics Study of Nickel(II) Octaethylporphyrin Adsorbed on Graphite(0001)

The effects of adsorption on the graphite(0001) surface on the nonplanar distortions of nickel(II)octaethylporphyrin were studied by molecular mechanics (MM) approach. Using the Consistent Force Field (CFF) program with previously developed parameters for metalloporphyrins and supplemented to treat intermolecular interactions geometry optimizations were carried out for 43 conformations of 28 distinct conformers of nickel(II)octaethylporphyrin. The stable energy-minimized conformers were stereochemically characterized, analyzed by the Normal-coordinate Structural Decomposition (NSD) method and compared with the available theoretical and experimental data for the isolated nickel(II)octaethylporphyrin structures.