Two-dimensional networks of brominated Y-shaped molecules on Au(111)
- Authors
- Jeon, Seung; Chang, Min Hui; Jang, Won-Jun; Lee, Soon-Hyung; Han, Seungwu; Kahng, Jong
- Issue Date
- 28-2월-2018
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Molecular nanostructures; Self-assembly; Scanning tunneling microscopy; Halogen bond
- Citation
- APPLIED SURFACE SCIENCE, v.432, pp.332 - 336
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED SURFACE SCIENCE
- Volume
- 432
- Start Page
- 332
- End Page
- 336
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/77299
- DOI
- 10.1016/j.apsusc.2017.03.233
- ISSN
- 0169-4332
- Abstract
- In the design of supramolecular structures, Y-shaped molecules are useful to expand the structures in three different directions. The supramolecular structures of Y-shaped molecules with three halogen-ligands on surfaces have been extensively studied, but much less are done for those with six halogen-ligands. Here, we report on the intermolecular interactions of a Y-shaped molecule, 1,3,5-Tris(3,5-dibromophenyl) benzene, with six Br-ligands studied using scanning tunneling microscopy (STM). Honeycomb-like structures were observed on Au(111), and could be explained with chiral triple-nodes made of three Br center dot center dot center dot Br halogen bonds. Molecular models were proposed based on STM images and reproduced with density-functional theory calculations. Although the molecule has six Br-ligands, only three of them form Br center dot center dot center dot Br halogen bonds because of geometrical restrictions. Our study shows that halogenated Y-shaped molecules will be useful components for building supramolecular structures. (C) 2017 Elsevier B.V. All rights reserved.
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