Open AccessOligomeric approach to 2D materials modeling
Author(s) -
Serguei Fomine,
Wilmer Esteban Vallejo Narváez,
César Gabriel Vera de la Garza,
Luis Daniel Solís Rodríguez
Publication year - 2021
Publication title -
mundo nano
Language(s) - English
Resource type - Journals
eISSN - 2448-5691
pISSN - 2007-5979
DOI - 10.22201/ceiich.24485691e.2022.29.69699
Subject(s) - electronic structure , materials science , graphene , singlet state , silicon , doping , ground state , conjugated system , chemical physics , electron affinity (data page) , nanotechnology , heterojunction , computational chemistry , polymer , chemistry , optoelectronics , atomic physics , physics , molecule , organic chemistry , composite material , excited state
Oligomeric approach has been originally developed to study electronic properties of conjugated polymers. This approach allows to access electronic properties of 1D systems otherwise difficult to calculate. We successfully extended this method to study electronic properties of 2D materials. In this review we summarize our recent work in this area. It has been established that large graphene nanoflake possess multiconfigurational singlet or even high spin ground state. Doping of 2D systems has also been explored and it has been demonstrated that doping allows to tune their electronic properties, including ionization potentials, electron affinities, reorganization energies and the very nature of the ground state. The electronic properties of novel 2D allotropies of carbon, phosphorus, germanium and silicon have been studied as well as their complexes with Li. Heterostructures, of different 2D allotropies are readily formed. This is an alternative method for tuning of their electronic properties.