Degradation Behavior of Donor-acceptor Cyanoarenes-based Organic Photocatalysts

Abstract

Visible-light photocatalysis has emerged as a powerful tool for organic transformations in recent years. The traditional reliance on transition metal-based complexes as photocatalysts has raised concerns regarding their toxicity and the sustainability of precious metals, leading to the exploration of organic photocatalysts. Organic photocatalysts offer high structural diversity and eliminate the need for metal removal, addressing the aforementioned concerns. Notably, donor−acceptor cyanoarenes, originally developed as thermally activated delayed fluorescence emitters, have gained significant attention due to their unique properties as photocatalysts with high efficiency. Consequently, understanding the stability of these catalysts has become essential for further enhancing their performance. This review provides a comprehensive overview of recent studies focusing on the stability of organic photocatalysts. Key issues such as photodegradation and interactions with active species are discussed, offering insights into the durability of photocatalysts. Furthermore, we aim to present the current status while also identifying important directions for future research.