On-Surface Synthesis of Triaza[5]triangulene through Cyclodehydrogenation and its Magnetism
Loading...
Access rights
openAccess
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2024-11-04
Department
Major/Subject
Mcode
Degree programme
Language
en
Pages
6
Series
Angewandte Chemie - International Edition, Volume 63, issue 45, pp. 1-6
Abstract
Triangulenes as neutral radicals are becoming promising candidates for future applications such as spintronics and quantum technologies. To extend the potential of the advanced materials, it is of importance to control their electronic and magnetic properties by multiple graphitic nitrogen doping. Here, we synthesize triaza[5]triangulene on Au(111) by cyclodehydrogenation, and its derivatives by cleaving C−N bonds. Bond-resolved scanning tunneling microscopy and scanning tunneling spectroscopy provided detailed structural information and evidence for open-shell singlet ground state. The antiferromagnetic arrangement of the spins in positively doped triaza[5]triangulene was further confirmed by density function theory calculations. The key aspect of triangulenes with multiple graphitic nitrogen is the extra pz electrons composing the π orbitals, favoring charge transfer to the substrate and changing their low-energy excitations. Our findings pave the way for the exploration of exotic low-dimensional quantum phases of matter in heteroatom doped organic systems.Description
Publisher Copyright: © 2024 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.
Keywords
density functional theory, graphitic nitrogen, on-surface synthesis, scanning tunneling microscopy/spectroscopy, triangulene
Other note
Citation
Li, D, Silveira, O J, Matsuda, T, Hayashi, H, Maeda, H, Foster, A S & Kawai, S 2024, ' On-Surface Synthesis of Triaza[5]triangulene through Cyclodehydrogenation and its Magnetism ', Angewandte Chemie - International Edition, vol. 63, no. 45, e202411893, pp. 1-6 . https://doi.org/10.1002/anie.202411893