Interplay of Chemical and Electronic Structure on the Single-Molecule Level in 2D Polymerization
| Autor: | Jonas Björk, Rico Gutzler, Claudius Morchutt, Ulrich Starke, Carola Straßer, Klaus Kern |
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| Rok vydání: | 2016 |
| Předmět: |
chemistry.chemical_classification
Materials science Decarboxylation Scanning tunneling spectroscopy General Engineering General Physics and Astronomy 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry 01 natural sciences 0104 chemical sciences law.invention chemistry X-ray photoelectron spectroscopy Polymerization law Molecule General Materials Science Scanning tunneling microscope 0210 nano-technology Ultraviolet photoelectron spectroscopy |
| Zdroj: | ACS nano. 10(12) |
| ISSN: | 1936-086X |
| Popis: | Single layers of covalently linked organic materials in the form of two-dimensional (2D) polymers constitute structures complementary to inorganic 2D materials. The electronic properties of 2D polymers may be manipulated through a deliberate choice of the organic precursors. Here we address the changes in electronic structure—from precursor molecule to oligomer—by scanning tunneling spectroscopy and ultraviolet photoelectron spectroscopy. For this purpose, we introduce the polymerization reaction of 1,3,5-tris(4-carboxyphenyl)benzene via decarboxylation on Cu(111), which is thoroughly characterized by scanning tunneling microscopy, X-ray photoelectron spectroscopy, and density functional theory calculations. We present a comprehensive study of a contamination-free on-surface coupling scheme and study how dehydrogenation, decarboxylation, and polymerization affect the electronic structure on the molecular level. |
| Databáze: | OpenAIRE |
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