| DOI | Resolve DOI: https://doi.org/10.1063/1.476818 |
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| Author | Search for: Brown, L. A.1; Search for: Rayner, D. M.2 |
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| Affiliation | - National Research Council of Canada. Human Health Therapeutics
- National Research Council of Canada. Security and Disruptive Technologies
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| Format | Text, Article |
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| Subject | silver; photochemistry; surface photochemistry; desorption; adsorbates |
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| Abstract | The photochemistry of carbonyl sulfide (OCS) adsorbed to small silverclusters is shown to exhibit a striking odd–even dependence on the number of Ag atoms in the cluster. OCS is found to desorb nondissociatively from even numbered silverclusters. In contrast, on odd silverclusters, a new product channel corresponding to AgₙS is observed. Parallels are found with the photochemistry of adsorbates on extended surfaces. Cross-section measurements for OCS desorption from Ag₁₀ and wavelength-dependent measurements of OCS dissociation on Ag₉ both indicate that electronic excitation of the cluster initiates chemistry, analogous to substrate mediated surface photochemistry. The size dependence is reasonably explained in terms of a charge-transfer mechanism involving an ion-pair state of the AgₙOCS complex. |
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| Publication date | 1998-05-04 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21277564 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 40bafb55-f87b-422e-8300-32f0c74509b0 |
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| Record created | 2016-04-19 |
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| Record modified | 2020-03-20 |
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