Vibrational properties of graphdiynes as 2D carbon materials beyond graphene

Abstract

Two-dimensional (2D) hybrid sp-sp2 carbon systems are an appealing subject for science and technology. For these materials, topology and structure significantly affect electronic and vibrational properties. We investigate here by...

Cascade growth and performance optimization of a laminated heterointerface based on graphdiyne

“…Also, the peaks at 1932 and 2177 cm −1 are ascribed to the acetylenic bonds. 71 X-ray photoelectron spectroscopy (XPS) analysis was performed to further investigate the bonding situation of the carbon and chlorine atoms in the Cl-GDY/GDY film. Meanwhile, the XPS spectra of the Cl-GDY and GDY films prepared under the same experimental conditions are also provided.…”

Graphyne and graphdiyne nanoribbons: from their structures and properties to potential applications

“…Both GDYNRs and GYNRs have unique electrical and optical properties that are strongly dependent on their chemical structure, particularly their width and edge configuration. [152][153][154][155][156][157][158][159][160][161][162][163][164] Therefore, the controllable synthesis of GYNRs and GDYNRs with precise chemical structure is of great significance for its basic research and device applications.…”

Structure and vibrational properties of 1D molecular wires: from graphene to graphdiyne

“…40,41 A theoretical screening of all the possible GDY structures formed as graphene derivatives has determined 32 different 2D structures, each with specific electronic and vibrational properties. 42,43 From a synthetic point of view, an appealing approach towards 1D-and 2D-carbon networks containing acetylenic moieties is associated with the so-called on-surface synthesis, namely an ultra-high vacuum (UHV) bottom-up approach that gives access to the synthesis of macrocyclic π-electron systems with atomic accuracy by using designed molecular precursors in combination with modern advances in molecular resolution imaging and represents a unique tool for the realization of novel functional GYs nano-architectures and networks. [44][45][46][47] Some of the most promising results have been obtained with the atomically-precise synthesis of graphyne and graphdiyne molecular wires (GY MWs and GDY MWs, respectively), onedimensional polymers characterized by the presence of phenyl rings and acetylenic moieties within the same wire.…”

“…40,41 A theoretical screening of all the possible GDY structures formed as graphene derivatives has determined 32 different 2D structures, each with specific electronic and vibrational properties. 42,43…”