Murugan Rathamony Ajayakumar¹, Marco Di Giovannantonio², Carlo Antonio Pignedoli^2*, Lin Yang¹, Pascal Ruffieux², Ji Ma¹, Roman Fasel^2,3*, Xinliang Feng^1,4

1 Center for Advancing Electronics Dresden (cfaed), Faculty of Chemistry and Food Chemistry, Technische Universitat Dresden, Dresden, Germany

2 Empa, Swiss Federal Laboratories for Materials Science and Technology, nanotech@surfaces Laboratory, 8600 Dübendorf, Switzerland

3 Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Bern, Switzerland

4 Department of Synthetic Materials and Functional Devices, Max Planck Institute of Microstructure Physics, Halle, Germany

* Corresponding authors emails: carlo.pignedoli@empa.ch, roman.fasel@empa.ch

DOI10.24435/materialscloud:by-jd [version v1]

Publication date: Nov 11, 2022

How to cite this record

Murugan Rathamony Ajayakumar, Marco Di Giovannantonio, Carlo Antonio Pignedoli, Lin Yang, Pascal Ruffieux, Ji Ma, Roman Fasel, Xinliang Feng, On-surface synthesis of porous graphene nanoribbons containing nonplanar [14]annulene pores, Materials Cloud Archive 2022.146 (2022), https://doi.org/10.24435/materialscloud:by-jd

Description

The precise introduction of nonplanar pores in the backbone of graphene nanoribbon represents a great challenge. In a recent work, we explore a synthetic strategy toward the preparation of nonplanar porous graphene nanoribbon from a predesigned dibromohexabenzotetracene monomer bearing four cove-edges. Successive thermal annealing steps of the monomers indicate that the dehalogenative aryl-aryl homocoupling yields a twisted polymer precursor on a gold surface and the subsequent cyclodehydrogenation leads to a defective porous graphene nanoribbon containing nonplanar [14]annulene pores and five-membered rings as characterized by scanning tunneling microscopy and noncontact atomic force microscopy. Although the C–C bonds producing [14]annulene pores are not achieved with high yield, our results provide new synthetic perspectives for the on-surface growth of nonplanar porous graphene nanoribbons. The record contains data to support the results of our work

Materials Cloud sections using this data

Files

File name	Size	Description
ReadMe.yaml MD5md5:50d2de107b3abf2122755150fcf58d58	6.9 KiB	ReadMe file in yaml format detailing the content of the record
calculations-aiida-0.12.aiida MD5md5:0e3e88e9979c15d100be1288b41c1a43 Open this AiiDA archive on renkulab.io (https://renkulab.io/)	116.4 MiB	AiiDA archive containing inputs and outputs of all calculations. AiiDA version 0.12
data.tgz MD5md5:50d1308dfb15cc42914a8c69182b5d32	13.8 MiB	Compressed tar archive containing the experimental data supporting the results.

License

Files and data are licensed under the terms of the following license: Creative Commons Attribution 4.0 International.
Metadata, except for email addresses, are licensed under the Creative Commons Attribution Share-Alike 4.0 International license.

External references

Keywords

on-surface synthesis DFT graphene nanoribbons STM