Visible-light-driven organic transformations on semiconductors. (January 2021)

• Record Type: Journal Article
• Authors: Han, Guanqun; Sun, Yujie
• Is Part Of: Materials today physics. Volume 16(2020)
• Publication Date: 2021-01
• Subjects: Photocatalysis -- Semiconductor -- Organic oxidation -- Organic reduction -- Redox coupled transformation; Materials science -- Periodicals; Physics -- Periodicals; Electronic journals; 530.41
• DOI: 10.1016/j.mtphys.2020.100297
• Languages: English
• ISSNs: 2542-5293

Abstract

Abstract: Along with the increasing interest in exploring green and sustainable approaches in organic synthesis, photon, the cleanest energy form, has been widely utilized in driving various organic transformations. In contrast to well-established organic photocatalysis utilizing homogeneous photosensitizers and photocatalysts, solid-state semiconductors have received less but rapidly growing interest in this field. Herein, we summarize recent development in organic photocatalysis utilizing semiconductor-based photocatalysts, including metal oxides, metal chalcogenides, and metal-free carbon nitrides. For each category of semiconductors, both oxidation and reduction organic reactions are introduced first, followed by redox coupled reactions utilizing both excited electrons and holes. At the end, the remaining challenges and future opportunities of this field are discussed. Graphical abstract: Image 1 Highlights: Heterogeneous photocatalysis is an efficient approach for organic synthesis. Three classes of semiconductors, including metal oxide, metal chalcogenides, and metal-free carbon nitrides for organic transformations are discussed. Three organic reaction types, including oxidation, reduction, and redox-coupled reactions are summarized. Challenges and outlooks of heterogeneous photocatalytic organic transformations are presented.