期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 139, 期 29, 页码 9895-9900出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b03381
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资金
- Institutional Strategy of the University of Cologne within the German Excellence Initiative
- DFG Priority Program 1459 Graphene [MI581/20-1]
We demonstrate a new synthesis route for the growth of organometallic sandwich molecular nanowires, taking the example of Eu-cyclooctatetraene (EuCot), a predicted ferromagnetic semiconductor. We employ simultaneous exposure of Cot molecules and Eu vapor in ultrahigh vacuum to an inert substrate, such as graphene. Using a Cot excess under temperature conditions of a finite residence time of the molecule, the reactand diffusion confined to two dimensions results in a clean product of ultralong wires. In situ scanning tunneling microscopy reveals not only their molecular structure but also a rich and intriguing growth morphology. The new on-surface synthesis permits experimental access to a largely unexplored class of one-dimensional organometallic systems with potential for exciting electronic and magnetic properties.
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