Ordering, flexibility and frustration in arrays of porphyrin nanorings
Publication Date
April 1, 2020
Creators
Description
The two-dimensional packing of cyclic porphyrin polymers, ‘nanorings’, on a graphite surface shows a rich and complex behaviour due to their internal symmetry and flexibility. Depending on the number of porphyrin groups 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. We study nanorings, c-PN, with N = 10 or 12 linked porphyrins which are deposited from solution onto a graphite surface and investigated using scanning probe microscopy. For c-P12 we observe a close-packed hexagonal array in which the porphyrins on neighbouring rings are aligned, but frustration occurs in arrays of c-P10 since close packing and co-alignment of neighbouring groups cannot be simultaneously realised. These observations are in excellent agreement with the computational predictions of the local ordering, stabilisation effects due to deformation, and the intermolecular interactions in the studied aggregates.
Associate publ. DOI
Subjects (LCSH)
Subjects
Subjects (JACS)
Subjects (LC)
Divisions
University of Nottingham, UK Campus::Faculty of Science::School of Physics and Astronomy
Data type
Images acquired using scanning probe microscopy
Funders
European Research Council
Leverhulme Trust
Data collection method
Molecular Imaging/Agilent Scanning tunnelling microscope, Asylum Instruments Cypher Atomic Force Microscope
Resource languages
English
Publisher
The University of Nottingham
Date Issued
April 1, 2020
Except where otherwise noted, this item's license is described as
File(s)![Thumbnail Image]()
![Thumbnail Image]()
Name
AS-[HOPG-CP12-NEW]-(27-01-14)-034.STP
Description
SI Figure 2c
Size
4 MB
Format
Unknown
Checksum (MD5)
03fb49ec1928f1feb47fe88c5a6af5d2
Name
AS-[HOPG-AS0180-NONANOIC]-(16-04-13)-003.STP
Description
Figure 3g
Size
4 MB
Format
Unknown
Checksum (MD5)
bd3c41a3ac42b7eca4a9efcbb5d540c8