Issue 47, 2018

Spontaneous growth of 2D coordination polymers on functionalized ferromagnetic surfaces

Abstract

The spontaneous growth of lamellar metal-alkanethiolates (LMAs) on reactive ferromagnetic surfaces as a result of surface oxidation has been observed. When alkanethiol self-assembled monolayers (SAMs) grown under an inert atmosphere over cobalt or permalloy (Ni80Fe20) are exposed to air, oxygen diffuses through the molecular layer. This induces an oxidation of metal atoms at the metal surface and a release of the resulting metal cations that migrate coordinated by the alkanethiol molecules to form lamellar structures over the SAMs. This process has been imaged in real-time, under ambient conditions, by means of different microscopy techniques. The influence of the alkyl chain length, the nature of the ferromagnet, the temperature and the atmospheric moisture on the number, area and height of the resulting features has been systematically evaluated. Remarkably, the possibility to follow the migration in real-time makes it a promising model system for the study of surface/molecule interface processes. Most importantly, the composition and crystallinity of these LMAs have been studied, evidencing that real 2D coordination polymers are formed on the surface. Hence, one could envision this strategy as a new method for the assembly of more complex low-dimensional (2D) magnetic materials based on coordination polymers.

Graphical abstract: Spontaneous growth of 2D coordination polymers on functionalized ferromagnetic surfaces

Supplementary files

Article information

Article type
Edge Article
Submitted
11 Jūl. 2018
Accepted
15 Sept. 2018
First published
18 Sept. 2018
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2018,9, 8819-8828

Spontaneous growth of 2D coordination polymers on functionalized ferromagnetic surfaces

M. Mattera, V. Rubio-Giménez, S. Delprat, R. Mattana, P. Seneor, S. Tatay, A. Forment-Aliaga and E. Coronado, Chem. Sci., 2018, 9, 8819 DOI: 10.1039/C8SC03067G

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