On-surface synthesis of organic nanostructures

SNIC 2019/3-134


SNIC Medium Compute

Principal Investigator:

Jonas Björk


Linköpings universitet

Start Date:


End Date:


Primary Classification:

10407: Theoretical Chemistry

Secondary Classification:

10402: Physical Chemistry

Tertiary Classification:

10304: Condensed Matter Physics



The project concerns the study of organic nanostructures formed though on-surface synthesis. On-surface synthesis is becoming an increasingly popular approach for creating atomically precise organic nanostructures, through the coupling of molecular building blocks on surfaces, with great relevance and prospects in for example organic electronics. However, very little is known about the on-surface reactions, which makes them arduous to control. Fundamental understanding of the underlying on-surface reactions is therefore of great interest. Furthermore, knowledge is needed for how the structures of the formed materials govern their electronic properties and how the electronic properties of the materials are affected by defects. Such understanding would guide the development of materials with specific electronic properties. The project is a continuation of a previous project. The specific thing which is new in the current project is that we will investigate the potential of MXenes in on-surface synthesis application (which is usually done on noble metal surfaces). The proposed project is divided into two parts. In the first part of the project we will investigate the formation mechanisms of organic nanostructures from molecular building blocks, providing insight into the underlying surface chemistry of these reactions. This part of the project will be carried out by density functional theory combined with methods for studying reaction paths, such as the Nudged Elastic Band and Dimer methods, as implemented in the VASP code. In the second part of the project we will investigate electronic properties of organic nanostructures. This will also to a large extent be performed by density functional theory with the VASP code. Furthermore, we will use our own code BandUP, which allows for band structure calculations of defective materials, with respect to their primitive unit cell by so-called band unfolding techniques. The BandUP code has been developed on previous NSC resources and has been tested on Tetralith.