Coordination-driven monolayer-to-bilayer transition in two-dimensional metal–organic networks
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Authors
Moradi, Mina
Lengweiler, Nadia
Housecroft, Catherine
Stahlberg, Henning
Jung, Thomas
Author (Corporation)
Publication date
16.03.2021
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Type
01A - Journal article
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Parent work
The Journal of Physical Chemistry Part B
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Volume
125
Issue / Number
16
Pages / Duration
4204-4211
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American Chemical Society
Place of publication / Event location
Washington
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Abstract
We report on monolayer-to-bilayer transitions in 2D metal–organic networks (MONs) from amphiphiles supported at the water–air interface. Functionalized calix[4]arenes are assembled through the coordination of selected transition metal ions to yield monomolecular 2D crystalline layers. In the presence of Ni(II) ions, interfacial self-assembly and coordination yields stable monolayers. Cu(II) promotes 2D coordination of a monolayer which is then diffusively reorganizing, nucleates, and grows a progressive amount of second layer islands. Atomic force microscopic data of these layers after transfer onto solid substrates reveal crystalline packing geometries with submolecular resolution as they are varying in function of the building blocks and the kinetics of the assembly. We assign this monolayer-to-bilayer transition to a diffusive reorganization of the initial monolayers owing to chemical vacancies of the predominant coordination motif formed by Cu2+ ions. Our results introduce a new dimension into the controlled monolayer-to-multilayer architecturing of 2D metal–organic networks.
Keywords
Monolayers, Interfaces, Transition metals, Layers, Ions
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1520-6106
1520-5207
1520-5207
Language
English
Created during FHNW affiliation
Yes
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Publication status
Published
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Peer review of the complete publication
Open access category
Closed
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Citation
Moradi, M., Lengweiler, N., Housecroft, C., Tulli, L., Stahlberg, H., Jung, T., & Shahgaldian, P. (2021). Coordination-driven monolayer-to-bilayer transition in two-dimensional metal–organic networks. The Journal of Physical Chemistry Part B, 125(16), 4204–4211. https://doi.org/10.1021/acs.jpcb.1c01058