She, S., Xuan, W., Bell, N. L. , Pow, R. , Ribo, E. G., Sinclair, Z., Long, D.-L. and Cronin, L. (2021) Peptide sequence mediated self-assembly of molybdenum blue nanowheel superstructures. Chemical Science, 12(7), pp. 2427-2432. (doi: 10.1039/D0SC06098D)
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Abstract
The precise control over the formation of complex nanostructures, e.g. polyoxometalates (POMs), at the sub-nanoscale is challenging but critical if non-covalent architectures are to be designed. Combining biologically-evolved systems with inorganic nanostructures could lead to sequence-mediated assembly. Herein, we exploit oligopeptides as multidentate structure-directing ligands via metal-coordination and hydrogen bonded interactions to modulate the self-assembly of POM superstructures. Six oligopeptides (GH, AH, SH, G2H, G4H and G5H) are incorporated into the cavities of Molybdenum Blue (MB) POM nanowheels. It is found that the helicity of the nanowheel can be readily switched (Δ to Λ) by simply altering the N-terminal amino acid on the peptide chain rather than their overall stereochemistry. We also reveal a delicate balance between the Mo-coordination and the hydrogen bonds found within the internal cavity of the inorganic nanowheels which results in the sequence mediated formation of two unprecedented asymmetrical nanowheel frameworks: {Mo122Ce5} and {Mo126Ce4}.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Xuan, Mr Weimin and Pow, Robert and Bell, Dr Nicola and Sinclair, Zoe and Long, Dr Deliang and She, Dr Shan and Cronin, Professor Lee |
Authors: | She, S., Xuan, W., Bell, N. L., Pow, R., Ribo, E. G., Sinclair, Z., Long, D.-L., and Cronin, L. |
College/School: | College of Science and Engineering > School of Chemistry |
Journal Name: | Chemical Science |
Publisher: | Royal Society of Chemistry |
ISSN: | 2041-6520 |
ISSN (Online): | 2041-6539 |
Published Online: | 14 December 2020 |
Copyright Holders: | Copyright © 2020 The Royal Society of Chemistry |
First Published: | First published in Chemical Science 12:2427-2432 |
Publisher Policy: | Reproduced under a Creative Commons License |
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