Interchain Interactions Mediated by Br Adsorbates in Arrays of Metal鈥揙rganic Hybrid Chains on Ag(111)
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- 作者：Jihun Park ; Kye Yeop Kim ; Kyung-Hoon Chung ; Jong Keon Yoon ; Howon Kim ; Seungwu Han ; Se-Jong Kahng
- 刊名：Journal of Physical Chemistry C
- 出版年：2011
- 出版时间：August 4, 2011
- 年：2011
- 卷：115
- 期：30
- 页码：14834-14838
- 全文大小：994K
- 年卷期：v.115,no.30(August 4, 2011)
- ISSN：1932-7455
文摘
Interchain interactions in arrays of metal鈥搊rganic hybrid chains were studied using scanning tunneling microscopy and ab initio calculations. The array of hybrid chains having a Ag鈥揳nthryl biradical were self-assembled by catalytic scission of Br鈥揅 bonds in 9,10-dibromoanthracene on Ag(111). An atomic model for the observed chain structures was proposed. Ag atoms in chains were alternatingly located at hollow sites, making slightly zigzaging structures. Between the hybrid chains, Br atoms located at hollow sites to form Br路路路H intermolecular bonds. Anthryl biradicals had two different apparent heights; this was explained by considering Br路路路H intermolecular bonds and intrachain steric repulsion. When a hybrid chain was laterally moved by manipulation techniques, Br adsorbates moved together with the chain, implying that they are stabilized by Br路路路H intermolecular bonds.