Patera, Laerte L. and Zou, Zhiyu and Dri, Carlo and Africh, Cristina and Repp, Jascha and Comelli, Giovanni (2017) Imaging on-surface hierarchical assembly of chiral supramolecular networks. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 19 (36). pp. 24605-24612. ISSN 1463-9076, 1463-9084
Full text not available from this repository. (Request a copy)Abstract
The bottom-up assembly of chiral structures usually relies on a cascade of molecular recognition interactions. A thorough description of these complex stereochemical mechanisms requires the capability of imaging multilevel coordination in real-time. Here we report the first direct observation of hierarchical expression of supramolecular chirality at work, for 10,100-dibromo-9,9 '-bianthryl (DBBA) on Cu(111). Molecular recognition first steers the growth of chiral organometallic chains and then leads to the formation of enantiopure islands. The structure of the networks was determined by noncontact atomic force microscopy (nc-AFM), while high-speed scanning tunnelling microscopy (STM) revealed details of the assembly mechanisms at the ms time-scale. The direct observation of the chirality transfer pathways allowed us to evaluate the enantioselectivity of the interchain coupling.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SCANNING-TUNNELING-MICROSCOPY; ATOMIC-FORCE MICROSCOPY; BOTTOM-UP FABRICATION; GRAPHENE-NANORIBBON; ORGANOMETALLIC INTERMEDIATE; METAL-SURFACES; GOLD ADATOMS; AU(111); RECOGNITION; ADSORPTION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Jascha Repp |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:20 |
| Last Modified: | 27 Feb 2019 07:39 |
| URI: | https://pred.uni-regensburg.de/id/eprint/2156 |
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