Cooperative assembly of H-bonded rosettes inside a porphyrin nanoring
Royal Society of Chemistry
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Motloch, P., Bols, P., Anderson, H., & Hunter, C. (2021). Cooperative assembly of H-bonded rosettes inside a porphyrin nanoring. Chemical Science, 12 (4), 1427-1432. https://doi.org/10.1039/d0sc06097f
The melamine•barbiturate H-bonded rosette motif is of comparable dimensions and symmetry to the cavity of a butadiyne- linked 6-porphyrin nanoring. Functionalisation of each of the barbiturate component and the pyrimidine component of a H- bonded rosette with a pyridine ligand leads to a self-assembled hexapyridine ligand, which binds cooperatively to the zinc porphyrin nanoring. UV-vis-NIR and 1H NMR experiments show that the 7-component assembly forms at concentrations at which neither the H-bonding interactions nor the zinc porphyrin-pyridine interactions are formed in the absence of one of the three components. The mean effective molarities of these rosette complexes are around 200 mM in chloroform at 298 K.
Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement no. 642793.
European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (642793)
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External DOI: https://doi.org/10.1039/d0sc06097f
This record's URL: https://www.repository.cam.ac.uk/handle/1810/313443
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