Berlin 2018 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 59: Nanostructures at surfaces: 1D and 2D structures and networks I

O 59.9: Vortrag

Mittwoch, 14. März 2018, 12:30–12:45, MA 141

Regulation of Organic Structures by Cations and Anions from Salts — •Lei Xie and Wei Xu — Interdisciplinary Materials Research Center, Tongji-Aarhus Joint Research Center for Nanostructures and Functional Nanomaterials College of Materials Science and Engineering, Tongji University Shanghai 201804 (P.R. China)

From the combination of STM imaging and DFT calculations, we show that both cations and anions provided by salts can simultaneously interact with different sites of the target molecules resulting in structural formation in a synergistic way. In the first example, we choose the 9-ethylguanine molecule (9eG) and transition metal halides as model system, showing that metal-organic structures can further be stabilized by the electronic interactions between halogen anions and hydrogen-rich sites of molecules. In the second case, 1-methylcytosine (1mC) and alkali halide are chosen where both ions participating in structural formation. The elementary metal*organic motifs are connected by Cl in a variety of fashions demonstrating structural diversity. These findings provide a facile method of introducing both cations and anions at the same time for the regulation of organic structures.

References: [1] L. Xie, C. Zhang, Y. Ding, W. Xu*, Angew. Chem. Int. Ed. 56, 5077-5081, 2017 [2] L. Xie, C. Zhang, Y. Ding, W. E, W. Xu*, Chem. Commun. 53, 8767-8769, 2017