A new carbon allotrope: graphdiyne

Two-dimensional all-carbon graphdiyne (GDY) with characteristics of sp- and sp2-hybridized carbon atoms has attracted wide attention due to its unique structure and properties as well as great development potential in fundamental and applied research in various fields. The containing sp-hybridized acetylenic bond (-C≡C-) endows GDY many unique and fascinating properties, such as a big-conjugated structure with a large number of π bonds in its surface, abundant natural pores, inhomogeneous charge distribution, and natural band gap, among others. As an artificially synthesized all-carbon material, GDY opens up a new research field in the research of carbon materials, brings an opportunity for the fundamental and applied research of carbon materials, and shows great potentials in applications such as the energy, catalysis, and photoelectricity and electrochemical intelligent devices. Graphdiyne (GDY) represents a new trending class of carbon materials demonstrating significant advantages in many areas such as energy, catalysis, photoelectricity, and electrochemical intelligent devices. In this review, we systematically summarize new progress in GDY, such as new methods for controlled preparation, aggregated structures, and new resulting properties and phenomena. The research foundation and applications in the fields of energy, catalysis, and photoelectric devices, among others, are highlighted. In particular, we present a detailed analysis of GDY, indicating the potential advantages and challenges in GDY science to inspire brilliant future development in this young field. Finally, we discuss future prospects for this exciting research area. Graphdiyne (GDY) represents a new trending class of carbon materials demonstrating significant advantages in many areas such as energy, catalysis, photoelectricity, and electrochemical intelligent devices. In this review, we systematically summarize new progress in GDY, such as new methods for controlled preparation, aggregated structures, and new resulting properties and phenomena. The research foundation and applications in the fields of energy, catalysis, and photoelectric devices, among others, are highlighted. In particular, we present a detailed analysis of GDY, indicating the potential advantages and challenges in GDY science to inspire brilliant future development in this young field. Finally, we discuss future prospects for this exciting research area.