Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces

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dc.citation.articleNumber10749en_US
dc.citation.journalTitleNature Communicationsen_US
dc.citation.volumeNumber7en_US
dc.contributor.authorLi, Jieboen_US
dc.contributor.authorQian, Huifengen_US
dc.contributor.authorChen, Hailongen_US
dc.contributor.authorZhao, Zhunen_US
dc.contributor.authorYuan, Kaijunen_US
dc.contributor.authorChen, Guangxuen_US
dc.contributor.authorMiranda, Andreaen_US
dc.contributor.authorGuo, Xunminen_US
dc.contributor.authorChen, Yajingen_US
dc.contributor.authorZheng, Nanfengen_US
dc.contributor.authorWong, Michael S.en_US
dc.contributor.authorZheng, Junrongen_US
dc.date.accessioned2017-05-24T16:33:35Zen_US
dc.date.available2017-05-24T16:33:35Zen_US
dc.date.issued2016en_US
dc.description.abstractEnergy migrations at metal nanomaterial surfaces are fundamentally important to heterogeneous reactions. Here we report two distinctive energy migration pathways of monolayer adsorbate molecules on differently sized metal nanoparticle surfaces investigated with ultrafast vibrational spectroscopy. On a 5 nm platinum particle, within a few picoseconds the vibrational energy of a carbon monoxide adsorbate rapidly dissipates into the particle through electron/hole pair excitations, generating heat that quickly migrates on surface. In contrast, the lack of vibration-electron coupling on approximately 1 nm particles results in vibrational energy migration among adsorbates that occurs on a twenty times slower timescale. Further investigations reveal that the rapid carbon monoxide energy relaxation is also affected by the adsorption sites and the nature of the metal but to a lesser extent. These findings reflect the dependence of electron/vibration coupling on the metallic nature, size and surface site of nanoparticles and its significance in mediating energy relaxations and migrations on nanoparticle surfaces.en_US
dc.identifier.citationLi, Jiebo, Qian, Huifeng, Chen, Hailong, et al.. "Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces." <i>Nature Communications,</i> 7, (2016) Springer Nature: https://doi.org/10.1038/ncomms10749.en_US
dc.identifier.doihttps://doi.org/10.1038/ncomms10749en_US
dc.identifier.urihttps://hdl.handle.net/1911/94371en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the articleﾒs Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleTwo distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfacesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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