Halogen Functionalization in the 2D Material Flatland: Strategies, Properties, and Applications. Issue 24 (29th March 2021)

• Record Type: Journal Article
• Authors: Tang, Xian; Fan, Touwen; Wang, Cong; Zhang, Han
• Is Part Of: Small. Volume 17:Issue 24(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-03-29
• Subjects: 2D materials -- electronegativity -- exfoliation -- fluorination -- halogenation -- magnetism -- optoelectronics; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.202005640
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: Given the electronegativity and bonding environment of halogen elements, halogenation (i.e., fluorination, chlorination, bromination, and iodination) serves as a versatile strategy for chemical modifications of materials. The combination of halogens and 2D materials has triggered extensive interests since the first report on graphene fluorination in 2008. Subsequently, scholars consistently conduct pre‐, in‐process, or posthalogenation modifications of emerging 2D materials to achieve desired properties and broad device applications. They also continuously explore the role of halogens in 2D material functionalization. The multiple advantages introduced by halogen decoration make 2D materials outstanding from each subclass. In this review, an overall retrospect is provided on the research advances in the area of 2D material halogenation, including experimental halogenation strategies, halogen‐triggered novel physics and properties, and advanced applications across the studied objects. Future research directions in this area are also proposed. Abstract : Halogen atoms with unique electronegativity and bonding characteristics provide a broad platform for modification and functionalization of a material. The combination of halogens and 2D materials has triggered extensive interests. Current experimental halogenation strategies, induced novel phenomena and properties, and versatile device applications of the halogenated 2D materials are comprehensively reviewed. Existing problems and future prospects are discussed.