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Motion of Fullerenes around Topological Defects on Metals: Implications for the Progress of Molecular Scale Devices

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Nirmalraj, Peter and Daly, Ronan and Martín, Nazario and Thompson, Damien (2017) Motion of Fullerenes around Topological Defects on Metals: Implications for the Progress of Molecular Scale Devices. Applied materials and interfaces . ISSN 1944-8252 (Online) 1944-8244(Print)

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Official URL: http://pubs.acs.org/doi/abs/10.1021/acsami.7b00408



Abstract

Research on motion of molecules in the presence of thermal noise is central for progress in two-terminal molecular scale electronic devices. However, it is still unclear what influence imperfections in bottom metal electrode surface can have on molecular motion. Here, we report a two-layer crowding study, detailing the early stages of surface motion of fullerene molecules on Au(111) with nanoscale pores in a n-tetradecane chemical environment. The motion of the fullerenes is directed by crowding of the underlying n-tetradecane molecules around the pore fringes at the liquid−solid interface. We observe in real-space the growth of molecular populations around different pore geometries. Supported by atomic-scale modeling, our findings extend the established picture of molecular crowding by revealing that trapped solvent molecules serve as prime nucleation sites at nanopore fringes.


Item Type:Article
Uncontrolled Keywords:Molecular dynamics, nanopores, fullerenes, scanning tunneling microscopy and spectroscopy
Subjects:Sciences > Chemistry > Chemistry, Organic
ID Code:41601
Deposited On:02 Mar 2017 11:48
Last Modified:02 Mar 2017 13:02

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