Structural Transformation of Surface-Confined Porphyrin Networks by Addition of Co Atoms.
X-ray photoelectron spectroscopy
metal-organic coordination networks
molecular self-assemblies
scanning tunneling microscopy
Journal
Chemistry (Weinheim an der Bergstrasse, Germany)
ISSN: 1521-3765
Titre abrégé: Chemistry
Pays: Germany
ID NLM: 9513783
Informations de publication
Date de publication:
25 Aug 2021
25 Aug 2021
Historique:
received:
06
04
2021
pubmed:
22
6
2021
medline:
22
6
2021
entrez:
21
6
2021
Statut:
ppublish
Résumé
The self-assembly of a nickel-porphyrin derivative (Ni-DPPyP) containing two pyridyl coordinating sites and two pentyl chains at trans meso positions was studied with scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS) and low energy electron diffraction (LEED) on Au(111). Deposition of Ni-DPPyP onto Au(111) gave rise to a close-packed network for coverages smaller or equal to one monolayer as revealed by STM and LEED. The molecular arrangement of this two-dimensional network is stabilized via hydrogen bonds formed between the pyridyl's nitrogen and hydrogen atoms from the pyrrole groups of neighboring molecules. Subsequent deposition of cobalt atoms onto the close-packed network and post-deposition annealing at 423 K led to the formation of a Co-coordinated hexagonal porous network. As confirmed by XPS measurements, the porous network is stabilized by metal-ligand interactions between one cobalt atom and three pyridyl ligands, each pyridyl ligand coming from a different Ni-DPPyP molecule.
Identifiants
pubmed: 34153154
doi: 10.1002/chem.202101217
pmc: PMC8456947
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
12430-12436Subventions
Organisme : Netherlands Organization for Scientific Research (NWO)
ID : Vici grant 680-47-633 and Veni grant 722.012.010
Organisme : Foundation for Fundamental Research on Matter
Organisme : Zernike Institute for Advanced Materials of the University of Groningen
Organisme : University of Strasbourg
Organisme : CNRS
Organisme : Institut Universitaire de France
Organisme : International Center for Frontier Research in Chemistry
Organisme : Ministry of Education and Research
ID : scholarship
Informations de copyright
© 2021 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.
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