酞菁-卟啉超分子的形成及光致电子转移过程

用吸收光谱的方法研究了溶液中四－（４’－Ｎ，Ｎ，Ｎ－三甲基）－苯氧基）酞菁季铵碘盐及它的锌络合物与四－（４’－磺酸基苯基）卟啉及它的锌络合物通过分子间自组装形成的新一类超分子排列的杂聚体，用Ｊｏｂ氏光度滴定的方法确定了它们的组成，为面对面的杂二聚体或三明治式的杂三聚体超分子排列，证实卟啉和酞菁的中心络合金属与溶剂分子之间的轴向配位是决定了卟啉，酞菁杂聚体的组成，发现在超分子体系中卟啉与酞菁能互相猝

The Studies of the Supramolecular System of Porphyrin-Phthalocyanine Formed by Molecular Self-assembly and Its Photoinduced Electron Transfer Processes

The supramolecular assemblies consisting of metal-free tetra(N trimethylaminobenoxy) phthalocyanate (H2TAPc) and its zinc complex (ZnTAPc) as well as metal-free tetra (4-sulfonatophyenyl) porphyrin (H2TSPP) and its zinc complex (ZnTSPP) in solution were studied by absorption spectroscopy. The stoichiometries of the hetero-aggregates were ascertained by Job's photometric titration plots, indicating that the aggregates were either face to face heterodimers or sandwich structure heterotrimers.The composition of the hetero-aggregates are controlled by the affinity of the central metal ion of each chromophore for axially bound coordinating sovlent molecules. The fluorescence ofporphyrin and phthalocyanine in the supramoecular system are quenched by each other. The transient absorption spetra of cationic porphyrin radical (around 600-650nm region) and Anonic phthalocyanine radical (around 550-600nm) were observed by nano second laser photolysis. The results indicated that intermolecular photoinduced electron transfer process from excited triplet state between the porphyrin and the phthalocyanine occured in the supramolecular system.