Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14365/1504
Title: | Synthesis of Pyrene-Fused Pyrazaacenes on Metal Surfaces: Toward One-Dimensional Conjugated Nanostructures | Authors: | Jiang, Li Papageorgiou, Anthoula C. Oh, Seung Cheol Sağlam, Özge Reichert, Joachim Duncan, David A. Zhang, Yi-Qi |
Keywords: | imine Schiff base cyclocondensation STM XPS ultrahigh vacuum Nitrogen-Doped Graphene Scanning-Tunneling-Microscopy Covalent Organic Frameworks Azide-Alkyne Cycloaddition X-Ray Spectroscopy Ladder Polymers Ultrahigh-Vacuum Terminal Alkynes Stm Polymerization |
Publisher: | Amer Chemical Soc | Abstract: | We investigated the synthesis of one-dimensional nanostructures via Schiff base (imine) formation on three close-packed coinage metal (Au, Ag, and Cu) surfaces under ultrahigh vacuum conditions. We demonstrate the feasibility of forming pyrene-fused pyrazaacene-based oligomers on the Ag(111) surface by thermal annealing of tetraketone and tetraamine molecules, which were designed to afford cyclocondensation products. Direct visualization by scanning tunneling microscopy of reactants, intermediates, and products with submolecular resolution and the analysis' of their statistical distribution in dependence of stoichiometry and annealing temperature together with the inspection of complementary X-ray photoelectron spectroscopy signatures provide unique insight in the reaction mechanism, its limitations, and the role of the supporting substrate. In contrast to the reaction on Ag(111), the reactants desorb from the Au(111) surface before reacting, whereas they decompose on the Cu(111) Surface during the relevant thermal treatment. | URI: | https://doi.org/10.1021/acsnano.5b06340 https://hdl.handle.net/20.500.14365/1504 |
ISSN: | 1936-0851 1936-086X |
Appears in Collections: | PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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