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Structural Transformation of Surface-Confined Porphyrin Networks by Addition of Co Atoms.

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  • معلومة اضافية
    • المصدر:
      Publisher: Wiley-VCH Country of Publication: Germany NLM ID: 9513783 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1521-3765 (Electronic) Linking ISSN: 09476539 NLM ISO Abbreviation: Chemistry Subsets: PubMed not MEDLINE; MEDLINE
    • بيانات النشر:
      Original Publication: Weinheim, Germany : Wiley-VCH
    • نبذة مختصرة :
      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.
      (© 2021 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.)
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    • Grant Information:
      Vici grant 680-47-633 and Veni grant 722.012.010 Netherlands Organization for Scientific Research (NWO); Foundation for Fundamental Research on Matter; Zernike Institute for Advanced Materials of the University of Groningen; University of Strasbourg; CNRS; Institut Universitaire de France; International Center for Frontier Research in Chemistry; scholarship Ministry of Education and Research
    • Contributed Indexing:
      Keywords: X-ray photoelectron spectroscopy; metal-organic coordination networks; molecular self-assemblies; scanning tunneling microscopy
    • الموضوع:
      Date Created: 20210621 Latest Revision: 20231107
    • الموضوع:
      20231107
    • الرقم المعرف:
      PMC8456947
    • الرقم المعرف:
      10.1002/chem.202101217
    • الرقم المعرف:
      34153154