Keller, Tristan J. and Sterzenbach, Christopher and Bahr, Joshua and Schneiders, Taria L. and Bursch, Markus and Kohn, Julia and Eder, Theresa and Lupton, John M. and Grimme, Stefan and Hoeger, Sigurd and Jester, Stefan-S. (2021) Nanopatterns of molecular spoked wheels as giant homologues of benzene tricarboxylic acids. CHEMICAL SCIENCE, 12 (27). pp. 9352-9358. ISSN 2041-6520, 2041-6539
Full text not available from this repository. (Request a copy)Abstract
Molecular spoked wheels with D-3h and C-s symmetry are synthesized by Vollhardt trimerization of C-2v-symmetric dumbbell structures with central acetylene units and subsequent intramolecular ring closure. Scanning tunneling microscopy of the D-3h-symmetric species at the solid/liquid interface on graphite reveals triporous chiral honeycomb nanopatterns in which the alkoxy side chains dominate the packing over the carboxylic acid groups, which remain unpaired. In contrast, C-s-symmetric isomers partially allow for pairing of the carboxylic acids, which therefore act as a probe for the reduced alkoxy chain nanopattern stabilization. This observation also reflects the adsorbate substrate symmetry mismatch, which leads to an increase of nanopattern complexity and unexpected templating of alkoxy side chains along the graphite armchair directions. State-of-the-art GFN-FF calculations confirm the overall structure of this packing and attribute the unusual side-chain orientation to a steric constraint in a confined environment. These calculations go far beyond conventional simple space-filling models and are therefore particularly suitable for this special case of molecular packing.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SCANNING-TUNNELING-MICROSCOPY; TRIMESIC ACID; NETWORKS; SOLVENT; DERIVATIVES |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group John Lupton |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Sep 2022 05:31 |
| Last Modified: | 01 Sep 2022 05:31 |
| URI: | https://pred.uni-regensburg.de/id/eprint/47114 |
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