A rectangular graphyne sheet is composed of units similar to phenyl rings that are linked by acetylenic chains, as in hexagonal γ-graphyne. This system is organized over a rectangular lattice similar to that of the recently synthesized biphenylene network. We investigate the stability of this sheet from different perspectives and study its electronic structure. Rectangular graphyne is a semiconducting system in its pristine form and features a pair of highly localized states. These characteristics are correlated with the structural anisotropy of the system, since its frontier states behave like quasi--1D states embedded in the 2D lattice. We further consider modified systems in which longer acetylenic links are introduced. We discuss how a strategic choice of the position of these longer bridges can lead to specific changes of the electronic structure of the rectangular graphyne sheet.
@article{arxiv.2312.08503,
title = {Electronic properties of two-dimensional rectangular graphyne based on phenyl-like building blocks},
author = {Anderson Gomes Vieira and Marcelo Lopes Pereira Júnior and Vincent Meunier and Eduardo Costa Girão},
journal= {arXiv preprint arXiv:2312.08503},
year = {2024}
}