Construction of Artificial Photosynthetic Molecular Devices by the Precise Arrangement of Porphyrins

2014 Fiscal Year Final Research Report

• Project/Area Number: 23350022
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Organic chemistry
• Research Institution: Osaka City University
• Principal Investigator: KOZAKI Masatoshi 大阪市立大学, 大学院理学研究科, 准教授 (10295678)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: デンドリマー / 光化学 / ポルフィリン / エネルギー移動 / 電子移動 / 分子ワイヤー / 高分子化学 / 有機合成化学

Outline of Final Research Achievements

The utilization of the sun light is effective method to solve severe energy and environmental problem that we currently face. The concentration of the sun energy is a key process in order to use energy of the sun. In this study, I succeeded in arranging a lot of antenna pigments (porphyrin) precisely by using dendrimers with rigid conjugated chains. As a result, I succeeded in the construction of the antenna molecules which have strong absorption throughout the visible light region. I proved nearly quantitative energy transfer from the peripheral porphyrins to a central porphyrin by means of spectroscopic measurements. In addition, I developed a novel synthetic technique to integrate a large number of dendrimer effectively. I can construct a huge sun light-harvesting system by accumulating a lot of antenna molecules by using this technique.

Free Research Field

構造有機化学、巨大分子化学