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Octaethyl vs Tetrabenzo Functionalized Ru Porphyrins on Ag(111) : Molecular Conformation, Self-Assembly and Electronic Structure

Meier, Dennis ; Knecht, Peter ; Vezzoni Vicente, Pablo ; Eratam, Fulden ; Xu, Hongxiang ; Lee, Tien Lin ; Generalov, Alexander LU ; Riss, Alexander ; Yang, Biao and Allegretti, Francesco , et al. (2025) In Journal of Physical Chemistry C 129(1). p.858-869
Abstract

Metalloporphyrins on interfaces offer a rich playground for functional materials and hence have been subjected to intense scrutiny over the past decades. As the same porphyrin macrocycle on the same surface may exhibit vastly different physicochemical properties depending on the metal center and its substituents, it is vital to have a thorough structural and chemical characterization of such systems. Here, we explore the distinctions arising from coverage and macrocycle substituents on the closely related ruthenium octaethyl porphyrin and ruthenium tetrabenzo porphyrin on Ag(111). Our investigation employs a multitechnique approach in ultrahigh vacuum, combining scanning tunneling microscopy, low-energy electron diffraction,... (More)

Metalloporphyrins on interfaces offer a rich playground for functional materials and hence have been subjected to intense scrutiny over the past decades. As the same porphyrin macrocycle on the same surface may exhibit vastly different physicochemical properties depending on the metal center and its substituents, it is vital to have a thorough structural and chemical characterization of such systems. Here, we explore the distinctions arising from coverage and macrocycle substituents on the closely related ruthenium octaethyl porphyrin and ruthenium tetrabenzo porphyrin on Ag(111). Our investigation employs a multitechnique approach in ultrahigh vacuum, combining scanning tunneling microscopy, low-energy electron diffraction, photoelectron spectroscopy, normal incidence X-ray standing wave, and near-edge X-ray absorption fine structure, supported by density functional theory. This methodology allows for a thorough examination of the nuanced differences in the self-assembly, substrate modification, molecular conformation and adsorption height.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry C
volume
129
issue
1
pages
12 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:39811437
  • scopus:85212311693
ISSN
1932-7447
DOI
10.1021/acs.jpcc.4c06978
language
English
LU publication?
yes
id
0c50990e-7e78-48a5-8a50-c472aa93e66d
date added to LUP
2025-01-30 10:30:19
date last changed
2025-07-03 23:30:14
@article{0c50990e-7e78-48a5-8a50-c472aa93e66d,
  abstract     = {{<p>Metalloporphyrins on interfaces offer a rich playground for functional materials and hence have been subjected to intense scrutiny over the past decades. As the same porphyrin macrocycle on the same surface may exhibit vastly different physicochemical properties depending on the metal center and its substituents, it is vital to have a thorough structural and chemical characterization of such systems. Here, we explore the distinctions arising from coverage and macrocycle substituents on the closely related ruthenium octaethyl porphyrin and ruthenium tetrabenzo porphyrin on Ag(111). Our investigation employs a multitechnique approach in ultrahigh vacuum, combining scanning tunneling microscopy, low-energy electron diffraction, photoelectron spectroscopy, normal incidence X-ray standing wave, and near-edge X-ray absorption fine structure, supported by density functional theory. This methodology allows for a thorough examination of the nuanced differences in the self-assembly, substrate modification, molecular conformation and adsorption height.</p>}},
  author       = {{Meier, Dennis and Knecht, Peter and Vezzoni Vicente, Pablo and Eratam, Fulden and Xu, Hongxiang and Lee, Tien Lin and Generalov, Alexander and Riss, Alexander and Yang, Biao and Allegretti, Francesco and Feulner, Peter and Reichert, Joachim and Barth, Johannes V. and Seitsonen, Ari Paavo and Duncan, David A. and Papageorgiou, Anthoula C.}},
  issn         = {{1932-7447}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{858--869}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry C}},
  title        = {{Octaethyl vs Tetrabenzo Functionalized Ru Porphyrins on Ag(111) : Molecular Conformation, Self-Assembly and Electronic Structure}},
  url          = {{http://dx.doi.org/10.1021/acs.jpcc.4c06978}},
  doi          = {{10.1021/acs.jpcc.4c06978}},
  volume       = {{129}},
  year         = {{2025}},
}