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In situ formation of H-bonding imidazole chains in break-junction experiments
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Wu, Chuanli, Alqahtani, Aminah, Sangtarash, Sara, Vezzoli, Andrea, Sadeghi, Hatef, Robertson, Craig M., Cai, Chenxin, Lambert, Colin J., Higgins, Simon J. and Nichols, Richard J. (2020) In situ formation of H-bonding imidazole chains in break-junction experiments. Nanoscale, 12 (14). pp. 7914-7920. doi:10.1039/D0NR00630K ISSN 2040-3364.
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Official URL: https://doi.org/10.1039/D0NR00630K
Abstract
As a small molecule possessing both strong H-bond donor and acceptor functions, 1H-imidazole can participate in extensive homo- or heteromolecular H-bonding networks. These properties are important in Nature, as imidazole moieties are incorporated in many biologically-relevant compounds. Imidazole also finds applications ranging from corrosion inhibition to fire retardants and photography. We have found a peculiar behaviour of imidazole during scanning tunnelling microscopy-break junction (STM-BJ) experiments, in which oligomeric chains connect the two electrodes and allow efficient charge transport. We attributed this behaviour to the formation of hydrogen-bonding networks, as no evidence of such behaviour was found in 1-methylimidazole (incapable of participating in intramolecular hydrogen bonding). The results are supported by DFT calculations, which confirmed our hypothesis. These findings pave the road to the use of hydrogen-bonding networks for the fabrication of dynamic junctions based on supramolecular interactions.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Journal or Publication Title: | Nanoscale | ||||||||
Publisher: | Royal Society of Chemistry | ||||||||
ISSN: | 2040-3364 | ||||||||
Official Date: | 14 April 2020 | ||||||||
Dates: |
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Volume: | 12 | ||||||||
Number: | 14 | ||||||||
Page Range: | pp. 7914-7920 | ||||||||
DOI: | 10.1039/D0NR00630K | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) |
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