Ordered Arrangement and Function of Supramolecular Complexes Composed of Self-Assembling Porphyrins and Fullerenes

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05432
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Organic chemistry
• Research Institution: Kyushu University
• Principal Investigator: Tani Fumito 九州大学, 先導物質化学研究所, 准教授 (80281195)
• Co-Investigator(Renkei-kenkyūsha): FUKUZUMI Shunichi 名城大学, 大学院・理工学研究科, 特任教授 (40144430) ; OHKUBO Kei 大阪大学, 高等共創研究院, 教授 (00379140)
• Research Collaborator: KAMIMURA Takuya ; OZAKO Shuwa ; OOYAMA Yousuke ; KOIDE Taro
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: ポルフィリン / フラーレン / 光励起 / 光誘起電子移動 / 一重項酸素発生 / 太陽電池 / 電荷分離状態 / 超分子

Outline of Final Research Achievements

The reaction mechanism of the photoexcited states of supramolecular complexes composed of self-assembling pyridyl-substituted cyclic porphyrin dimers and fullerenes was analyzed to show the formation of charge-separated states that have very long lifetimes (0.7 ms). The photovoltaic properties of dye-sensitized solar cells that employ the inclusion complex of the porphyrins and C60 fixed on thin film of TiO2 were evaluated to confirm the high adsorption amount of the complexes due to the effect of the multi-pyridyl anchoring groups and the better performance of the cyclic porphyrin dimers than the complxes. The quantum yield and rate of singlet oxygen generation by the photoexcitation of the supramolecular complexes of the cyclic porphyrin dimers with C60 were determined to clarify the higher activity of the the cyclic porphyrin dimers than the complxes.

Free Research Field

物理有機化学、構造有機化学、光化学、電気化学、超分子化学、機能物質化学