Mechanical stiffening of porphyrin nanorings through supramolecular columnar stacking

Svatek, Simon A., Perdigão, Luis M.A., Stannard, Andrew, Wieland, Maria B., Kondratuk, Dmitry V., Anderson, Harry L., O'Shea, James N. and Beton, Peter H. (2013) Mechanical stiffening of porphyrin nanorings through supramolecular columnar stacking. Nano Letters, 13 (7). pp. 3391-3395. ISSN 1530-6984

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Solvent-induced aggregates of nanoring cyclic polymers may be transferred by electrospray deposition to a surface where they adsorb as threedimensional columnar stacks. The observed stack height varies from single rings to four stacked rings with a layer spacing of 0.32 ± 0.04 nm as measured using scanning tunneling microscopy. The flexibility of the nanorings results in distortions from a circular shape, and we show, through a comparison with

Monte Carlo simulations, that the bending stiffness increases linearly with the stack height. Our results show that noncovalent interactions may be used to control the shape and mechanical properties of artificial macromolecular

aggregates offering a new route to solvent-induced control of two-dimensional supramolecular organization.

Item Type: Article
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number:
Depositing User: Davies, Mrs Sarah
Date Deposited: 17 Apr 2014 13:11
Last Modified: 04 May 2020 20:20

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