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Single atom coordination in a manganese-cobalt bi-metallic framework on graphene : geometric and electronic structures

Baronio, Stefania ; De Col, Michela ; Yadav, Asha ; Roondhe, Basant ; Mischke, Valentin ; Resel, Olga ; Bidoggia, Davide ; Namar, Alessandro ; Vinogradov, Nikolay LU orcid and Scardamaglia, Mattia LU , et al. (2025) In Nanoscale 17(28). p.16946-16963
Abstract

Manganese tetra-pyridyl-porphyrins are found to self-organize in an ordered monolayer on graphene. Moreover, post deposition of cobalt ad-atoms steers the geometric reordering of the layer, yielding the formation of a self-assembled bimetallic network, where both Mn and Co are tetra-coordinated with nitrogen. While manganese shifts from Mn(ii) towards the +2/+3 oxidation state range, depending on the local Co concentration and not reaching a full Mn(iii) configuration, pyridinic cobalt is stabilized in the rarer +1 oxidation state. The actual geometric and electronic structures of the framework are defined by lateral interactions, dominating over the weaker network-graphene bonding.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nanoscale
volume
17
issue
28
pages
18 pages
publisher
Royal Society of Chemistry
external identifiers
  • pmid:40620068
  • scopus:105010245342
ISSN
2040-3364
DOI
10.1039/d5nr01383f
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2025 The Royal Society of Chemistry.
id
295fd6fc-aec9-49a7-b7d3-0cba964fd5e2
date added to LUP
2025-12-11 15:38:55
date last changed
2025-12-11 15:40:12
@article{295fd6fc-aec9-49a7-b7d3-0cba964fd5e2,
  abstract     = {{<p>Manganese tetra-pyridyl-porphyrins are found to self-organize in an ordered monolayer on graphene. Moreover, post deposition of cobalt ad-atoms steers the geometric reordering of the layer, yielding the formation of a self-assembled bimetallic network, where both Mn and Co are tetra-coordinated with nitrogen. While manganese shifts from Mn(ii) towards the +2/+3 oxidation state range, depending on the local Co concentration and not reaching a full Mn(iii) configuration, pyridinic cobalt is stabilized in the rarer +1 oxidation state. The actual geometric and electronic structures of the framework are defined by lateral interactions, dominating over the weaker network-graphene bonding.</p>}},
  author       = {{Baronio, Stefania and De Col, Michela and Yadav, Asha and Roondhe, Basant and Mischke, Valentin and Resel, Olga and Bidoggia, Davide and Namar, Alessandro and Vinogradov, Nikolay and Scardamaglia, Mattia and Valvidares, Manuel and Gargiani, Pierluigi and Cinchetti, Mirko and Zamborlini, Giovanni and Giannozzi, Paolo and Vesselli, Erik}},
  issn         = {{2040-3364}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{28}},
  pages        = {{16946--16963}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{Nanoscale}},
  title        = {{Single atom coordination in a manganese-cobalt bi-metallic framework on graphene : geometric and electronic structures}},
  url          = {{http://dx.doi.org/10.1039/d5nr01383f}},
  doi          = {{10.1039/d5nr01383f}},
  volume       = {{17}},
  year         = {{2025}},
}