Construction of Artificial Photosynthetic System Using Functional Polymers

以开发新能源为目的，研究了利用阳光和水生产燃料的人工光合系统的构建。利用含有分散功能分子的电极包覆聚合物膜，研究了水氧化催化剂、二氧化碳还原催化剂和质子还原催化剂。对于水氧化催化剂，发现胺配位的三核Ru配合物（Ru-red）吸附在铂黑上时表现出较高的活性。它的活动。可以成功地根据分散配合物的分子间距离分布进行分析。将该催化剂体系与含有分散敏化剂Ru (bpy) 32+的Nafion膜偶联，通过设计双膜体系，成功构建了光化学水氧化体系，生成了二氧。对于二氧化碳还原，钴酞菁（CoPc）已被发现具有很高的催化活性。对其衍生物的活性进行了研究，并提出了一种新的反应机理，即在络合催化剂上注入第三电子。

With the aim of developing new energy resources, construction of an artificial photosynthetic system which produces fuels from sunshine and water has been investigated. By utilizing electrode-coated polymer membranes containing dispersed functional molecules, water oxidation catalyst, carbon dioxide reduction catalyst, and proton reduction catalyst have been studied.As for the water oxidation catalyst, it has been found that ammine-coordinated trinuclear Ru complex (Ru-red) shows high activity when adsorbed into platinum black. Its activity. could successfully be analyzed based on distribution of the molecule-to-molecule distance of the dispersed complex. By using this catalyst system coupled with a Nafion membrane containing dispersed sensitizer, Ru (bpy) 32+, and by designing a bilayr system, it was succeeded to construct a photoelectrochemical water oxidation system to evolve dioxygen.For C02 reduction, cobalt-phthalocyanine (CoPc) has been found to have a high catalytic activity. The activity of its derivatives has been studied, and a new reaction mechanism proposed which involves third electron injection to the complex catalyst.