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Ordering, Flexibility and Frustration in Arrays of Porphyrin Nanorings

Summerfield, Alex; Baldoni, Matteo; Kondratuk, Dmitry V; Anderson, Harry L; Whitelam, Stephen; Garrahan, Juan P; Besley, Elena; Beton, Peter H

Authors

Alex Summerfield

Matteo Baldoni

Dmitry V Kondratuk

Harry L Anderson

Stephen Whitelam

Juan P Garrahan

Elena Besley

Peter H Beton



Abstract

The regular packing of atoms, molecules and nanoparticles provides the basis for the understanding of structural order within condensed phases of matter. Typically the constituent particles are considered to be rigid with a fixed shape. Here we show, through a combined experimental and numerical study of the adsorption of cyclic porphyrin polymers, nanorings, on a graphite surface, that flexible molecules can exhibit a rich and complex packing behaviour. Depending on the number of porphyrin sub-units within the nanoring we observe either a highly ordered hexagonal phase or frustrated packing driven by directional interactions which for some arrangements is combined with the internal deformation of the cyclic polymer. Frustration and deformation occur in arrays of polymers with ten sub-units since close packing and co-alignment of neighbouring groups cannot be simultaneously realised for nanorings with this internal symmetry. *peter.beton@nottingham.ac.uk 2

Journal Article Type Article
Publication Date Jul 3, 2019
Electronic ISSN 2041-1723
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 10
Article Number 2932
APA6 Citation Summerfield, A., Baldoni, M., Kondratuk, D. V., Anderson, H. L., Whitelam, S., Garrahan, J. P., …Beton, P. H. (2019). Ordering, Flexibility and Frustration in Arrays of Porphyrin Nanorings. Nature Communications, 10, https://doi.org/10.1038/s41467-019-11009-y
DOI https://doi.org/10.1038/s41467-019-11009-y
Publisher URL https://www.nature.com/articles/s41467-019-11009-y

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