Novel Synthesis of Polycyclic Aromatic Compounds by Polymerization and Chain Scission

2023 Fiscal Year Final Research Report

• Project/Area Number: 22K19030
• Research Category: Grant-in-Aid for Challenging Research (Exploratory)
• Allocation Type: Multi-year Fund
• Review Section: Medium-sized Section 33:Organic chemistry and related fields
• Research Institution: Osaka University
• Principal Investigator: Shintani Ryo 大阪大学, 大学院基礎工学研究科, 教授 (50372561)
• Project Period (FY): 2022-06-30 – 2024-03-31
• Keywords: 多環芳香族化合物 / 重合反応 / 縫合重合

Outline of Final Research Achievements

Development and utilization of functional organic materials based on extended π-electron systems have been actively explored in recent years, but accessible molecular structures are highly limited. In this research project, we aimed to develop a new process involving the synthesis of polymers possessing polycyclic aromatic units by polymerization of linear molecules followed by cleavage of the chain. As a result, we established a synthetic method of poly(arylenevinylene)s having fused tetracyclic aromatic repeating units by stitching polymerization and subsequent alkene isomerization. In addition, various conditions were investigated for the chain scission of the obtained polymers, and the generation of low molecular weight products were confirmed.

Free Research Field

有機合成化学

Academic Significance and Societal Importance of the Research Achievements

本研究では、別々の研究分野として捉えられがちな低分子有機化合物の合成と有機高分子合成の垣根を取り除き、従来の合成法ではアクセス困難な低分子化合物の精密合成において、ポリマーを経由する「重合反応＋鎖切断」というアプローチを新しい有効な選択肢として示し、方法論として確立することを目標とした。今回の研究期間では一定程度の進捗であったが、その成果は将来的な新しい方法論としての展開につながるものであり、学術的な意義は非常に大きいと考えられる。