Doublet Open‐Shell Graphene Fragments

• Published in: Chemistry, an Asian journal Vol. 17; no. 13; pp. e202200251 - n/a
• Main Authors: Xiang, Qin, Sun, Zhe
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01.07.2022
• Subjects: Chemistry; dimerization; Fragments; Graphene; graphene fragments; organic radical; Physical properties; Polycyclic aromatic hydrocarbons; stability; Structural analysis; dimerization; organic radical; polycyclic aromatic hydrocarbons; graphene fragments; stability
• ISSN: 1861-4728; 1861-471X
• DOI: 10.1002/asia.202200251

Recent advances in neutral delocalized radical species based on polycyclic aromatic hydrocarbons with fused hexagonal rings, herein defined as doublet open‐shell graphene fragments, are summarized in this review. A few simple yet useful theoretical approaches for structural analysis and molecular design were introduced at first. Then, based on the number of fused hexagonal rings, molecular systems with different size, symmetry and edge structure were discussed with emphasis on those isolated in the crystalline form. Their unique self‐association behavior, chemical reactivity and physical properties were summarized and discussed, and insights on their functions and potential applications were provided. The recent advances in doublet open‐shell graphene fragmental molecules are described in this review on the basis of numbers of fused hexagonal rings. The focus is on stable candidates isolated in the crystalline form, with their chemical reactivity, physical properties and potential material applications highlighted.