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Retarding oxidation of copper nanoparticles without electrical isolation and the size dependence of work function
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Dabera, Dinesha, Walker, Marc, Sánchez, Ana M., Pereira, Harriotte Jessica, Beanland, R. and Hatton, Ross A. (2017) Retarding oxidation of copper nanoparticles without electrical isolation and the size dependence of work function. Nature Communications, 8 . 1894. doi:10.1038/s41467-017-01735-6 ISSN 2041-1723.
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Official URL: http://doi.org/10.1038/s41467-017-01735-6
Abstract
Copper nanoparticles (CuNPs) are attractive as a low-cost alternative to their gold and silver analogues for numerous applications, although their potential has hardly been explored due to their higher susceptibility to oxidation in air. Here we show the unexpected findings of an investigation into the correlation between the air-stability of CuNPs and the structure of the thiolate capping ligand: Of the 8 different ligands screened, those with the shortest alkyl chain, -(CH2)2- , and a hydrophilic carboxylic acid end group are found to be the most effective at retarding oxidation in air. We also show that CuNPs are not etched by thiol solutions as previously reported, and address the important fundamental question of how the work function of small supported metal particles scales with particle size. Together these findings set the stage for greater utility of CuNPs for emerging electronic applications.
| Item Type: | Journal Article | |||||||||
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| Subjects: | Q Science > QD Chemistry R Medicine > RS Pharmacy and materia medica |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Science > Physics |
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| Library of Congress Subject Headings (LCSH): | Nanoparticles, Copper -- Oxidation, Thiols, Carboxylic acids | |||||||||
| Journal or Publication Title: | Nature Communications | |||||||||
| Publisher: | Nature Publishing Group | |||||||||
| ISSN: | 2041-1723 | |||||||||
| Official Date: | 1 December 2017 | |||||||||
| Dates: |
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| Volume: | 8 | |||||||||
| Article Number: | 1894 | |||||||||
| DOI: | 10.1038/s41467-017-01735-6 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||
| Date of first compliant deposit: | 5 December 2017 | |||||||||
| Date of first compliant Open Access: | 9 April 2018 | |||||||||
| RIOXX Funder/Project Grant: |
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