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

doi:10.1038/ncomms10749

CORC > 北京大学 > 化学与分子工程学院

	Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces
	Li, Jiebo ; Qian, Huifeng ; Chen, Hailong ; Zhao, Zhun ; Yuan, Kaijun ; Chen, Guangxu ; Miranda, Andrea ; Guo, Xunmin ; Chen, Yajing ; Zheng, Nanfeng ; Wong, Michael S. ; Zheng, Junrong
刊名	NATURE COMMUNICATIONS
	2016
关键词	2-DIMENSIONAL INFRARED-SPECTROSCOPY DIRECT INELASTIC-SCATTERING PLATINUM NANOPARTICLES VIBRATIONAL LIFETIME CHEMICAL-DYNAMICS DOUBLE-RESONANCE REAL-TIME ULTRAFAST CLUSTERS CO
DOI	10.1038/ncomms10749
英文摘要	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.; AFOSR [FA9550-11-1-0070]; Welch foundation [C-1752]; PKU; David and Lucile Packard Foundation; Alfred P. Sloan Foundation; National Nature Science Foundation of China [21131005, 21420102001]; Smalley Institute of Rice University; SCI(E); PubMed; ARTICLE; zhengjunrong@gmail.com; 10749; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/434897]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Li, Jiebo,Qian, Huifeng,Chen, Hailong,et al. Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces[J]. NATURE COMMUNICATIONS,2016.
APA	Li, Jiebo.,Qian, Huifeng.,Chen, Hailong.,Zhao, Zhun.,Yuan, Kaijun.,...&Zheng, Junrong.(2016).Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces.NATURE COMMUNICATIONS.
MLA	Li, Jiebo,et al."Two distinctive energy migration pathways of monolayer molecules on metal nanoparticle surfaces".NATURE COMMUNICATIONS (2016).