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dc.contributor.authorLi, Jiebo
Qian, Huifeng
Chen, Hailong
Zhao, Zhun
Yuan, Kaijun
Chen, Guangxu
Miranda, Andrea
Guo, Xunmin
Chen, Yajing
Zheng, Nanfeng
Wong, Michael S.
Zheng, Junrong
dc.date.accessioned 2017-05-24T16:33:35Z
dc.date.available 2017-05-24T16:33:35Z
dc.date.issued 2016
dc.identifier.citation Li, Jiebo, Qian, Huifeng, Chen, Hailong, et al.. "Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces." Nature Communications, 7, (2016) Springer Nature: https://doi.org/10.1038/ncomms10749.
dc.identifier.urihttps://hdl.handle.net/1911/94371
dc.description.abstract Energy 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.
dc.language.iso eng
dc.publisher Springer Nature
dc.rights This 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.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.title Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces
dc.type Journal article
dc.citation.journalTitle Nature Communications
dc.citation.volumeNumber 7
dc.type.dcmi Text
dc.identifier.doihttps://doi.org/10.1038/ncomms10749
dc.identifier.pmcid PMC4757789
dc.identifier.pmid 26883665
dc.type.publication publisher version
dc.citation.articleNumber 10749


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