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The adsorbed state of a thiol on palladium nanoparticles

Rogers, Scott, Dimitratos, Nikolaos, Jones, Wilm, Bowker, Michael, Kanaras, Antonios G., Wells, Peter Philip, Catlow, Charles Richard and Parker, Stewart 2016. The adsorbed state of a thiol on palladium nanoparticles. Physical Chemistry Chemical Physics 18 , pp. 17265-17271. 10.1039/C6CP00957C

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In the present work, a combination of imaging, spectroscopic and computational methods shows that 1-dodecanethiol undergoes S-deprotonation to form 1-dodecanethiolate on the surface of palladium nanoparticles, which then self-assembles into a structure that shows a high degree of order. The alkyl chain is largely in the all-trans conformation, which occurs despite the small size of the nanoparticle, (mean diameter = 3.9 nm). Inelastic neutron scattering spectroscopy is readily able to characterise organic surface layers on nanoparticles; the nature of the material is irrelevant: whether the nanoparticle core is an oxide, a metal or a semiconductor makes no difference. Comparison to DFT calculations allows insights into the nature and conformation of the adsorbed layer.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Chemistry
Advanced Research Computing @ Cardiff (ARCCA)
Subjects: Q Science > QD Chemistry
Publisher: Royal Society of Chemistry
ISSN: 1463-9076
Date of First Compliant Deposit: 22 April 2016
Date of Acceptance: 5 April 2016
Last Modified: 10 Mar 2020 02:32

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