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STM Investigation of Molecular Architectures of Porphyrinoids on a Ag(111) Surface

Supramolecular Ordering, Electronic Properties and Reactivity

  • Book
  • © 2010

Overview

Authors:
  1. Florian Buchner

    1. , Dept. of Chemistry and Pharmacy, University Erlangen-Nürnberg, Erlangen, Germany

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  • Nominated by the University of Erlangen for a Springer Theses Prize.
  • A fundamental contribution which has led to a new level of understanding in the field of self-assembly of large organic molecules.
  • Presentation of outstanding results with respect to intramolecular conformation and supramolecular ordering, electronic interactions with the substrate, surface confined synthesis and ligand effects.
  • Includes supplementary material: sn.pub/extras

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (13 chapters)

  1. Front Matter

    Pages i-xxvii
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  2. Introduction

    • Florian Buchner
    Pages 1-3

  3. Fundamentals

    • Florian Buchner
    Pages 5-15

  4. Experimental Setup

    • Florian Buchner
    Pages 17-28

  5. Results

    1. Front Matter

      Pages 29-29
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    2. Self-Assembly and Individual Appearance of Tetraphenylporphyrins on Ag(111)

      • Florian Buchner
      Pages 31-45

    3. Self-Assembly and Individual Appearance of Cobalt(II)-Tetrakisditertbutylphenylporphyrins on Ag(111)

      • Florian Buchner
      Pages 47-62

    4. Coordination of Iron and Cobalt Atoms by Tetraphenylporphyrin Monolayers on Ag(111) and Formation of Metal(II)-Tetraphenylporphyrin

      • Florian Buchner
      Pages 63-78

    5. Different Aspects of 2H-Tetrakis-di-tert-butylphenylporphyrin on Ag(111)

      • Florian Buchner
      Pages 79-89

    6. Direct Metalation of a Phthalocyanine Monolayer on Ag(111) with Co-adsorbed Iron Atoms

      • Florian Buchner
      Pages 91-99

    7. Multicomponent Adlayers of Tetraphenylporphyrins on Ag(111)

      • Florian Buchner
      Pages 101-128

    8. Modification of the Growth of Iron on Ag(111) by Predeposited Organic Monolayers

      • Florian Buchner
      Pages 129-140

    9. Geometric and Electronic Aspects of CoTPP upon Dosage of NO

      • Florian Buchner
      Pages 141-151

    10. Self-Assembly and Voltage-Dependent Appearance of Octaethylporphyrins

      • Florian Buchner
      Pages 153-159

    11. Summary and Outlook

      • Florian Buchner
      Pages 161-164
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Keywords

About this book

The functionalization of surfaces on the nanoscale is one of the most fascinating and at the same time challenging topics in science. It is the key to tailoring catalysts, sensors, or devices for solar energy conversion, whose functional principle is based on the interaction of an active solid surface with another (liquid or gaseous) phase. As an example, planar transition metal complexes adsorbed on solid supports are promising candidates for novel heterogeneous catalysts. An important feature of these catalysts, compared to supported metal clusters, is the fact that the active sites, i. e. , the coordinated metal centers with their vacant axial coordination sites, are well de?ned and uniform. Metalloporphyrinoids are particularly suitable in this respect because they combine a structure forming element—the rigid molecular frame, which often induces long range order—with an active site, the coordinated metal ion. Its planar coordination environment leaves two axial coordination sites available for additional ligands. If adsorbed on a surface, one of these axial sites is occupied by the underlying substrate. The resulting electronic interaction with the surface can be used to tailor the electronic structure and thereby the reactivity of the metal center. The remaining site is free for the attachment of molecules (sensor functionality) and/or operates as a reaction center (single-site catalysis). Prototype examples are omnipresent in nature, where in particular metallo-tetrapyrrols play a decisive role in important biological processes, with the most prominent examples being iron porphyrins in heme, magnesium porphyrins in chlorophyll, and cobalt corrin in vitamin B12.

Authors and Affiliations

  • , Dept. of Chemistry and Pharmacy, University Erlangen-Nürnberg, Erlangen, Germany

    Florian Buchner

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