Iron-catalyzed Activation of Unreactive Bonds for Organic Materials Synthesis

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K15555
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 33020:Synthetic organic chemistry-related
• Research Institution: The University of Tokyo
• Principal Investigator: Shang Rui 東京大学, 大学院理学系研究科(理学部), 特任准教授 (50793212)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: iron-catalysis / C-H activation / polymerization / perovskite solar cells / tandem cyclization / non-fullerene acceptor / photodetector

Outline of Final Research Achievements

Through this research project, synthetic methods to access organic electronic materials using sustainable and economic iron based catalysts were developed. New organic optoelectronic materials for solar cells and light emitting diodes were developed.
Thiophene-based semiconductive polymers were produced by using iron-catalyzed thienyl C-H/C-H coupling using cheap reagents, offering a polymerization method of high sustainability and economic merits. New polymers made by iron-catalysis were found as highly efficient hole transporting to enable high performance perovskite solar cells. An iron-catalyzed one-pot tandem cyclization reaction was developed for synthesis of rigid carbon-bridged arylene-vinylene materials. Beside emissive materials, non-fullerene acceptor materials for near infrared photodetector was developed by using the new ladder molecule accessed by this iron-catalyzed tandem cyclization method.

Free Research Field

有機合成化学、有機材料化学

Academic Significance and Societal Importance of the Research Achievements

鉄を触媒として有機電子材料を作ることのメリットは、現代の化学合成に求められる環境的、持続可能、経済的問題のために顕著です。 このプロジェクトの結果は、触媒作用として豊富な鉄塩を使用して新しい電子材料を合成する方法を提供し、有機金属化学と触媒作用の新しい知識を提供します。 新しく開発された鉄触媒を使用することによる材料アクセスは、太陽電池、光検出器、および発光のための効率的な材料として発見されました。 これらの鉄触媒プロセスは、持続不可能な資源への依存を回避し、有機電子材料の製造コストを削減するために、将来の産業用途に役立つ可能性があります。