Hydronium ion motion in nanometer 3-methyl-pentane films

doi:10.1063/1.2748756

CORC > 北京大学 > 化学与分子工程学院

	Hydronium ion motion in nanometer 3-methyl-pentane films
	Bell, Richard C. ; Wu, Kai ; Iedema, Martin J. ; Cowin, James P.
刊名	journal of chemical physics
	2007
关键词	LIQUID-LIQUID INTERFACE SOFT-LANDED IONS TEMPERATURE-DEPENDENCE DIELECTRIC FRICTION HETEROGENEOUS DYNAMICS SUPERCOOLED LIQUIDS ORGANIC GLASSES DIFFUSION VISCOSITY TRANSPORT
DOI	10.1063/1.2748756
英文摘要	An ion soft-landing approach was applied to study the motion of hydronium (D(3)O(+)) and cesium (Cs(+)) ions from 84 to 104 K in glassy 3-methyl-pentane (3MP) films vapor deposited on Pt(111). Both ions were found to have very similar mobilities in 3MP. The span of ion mobilities probed is from similar to 10(-18) to similar to 10(-13) m(2) V(-1) s(-1). Ion transport in these films was studied as a function of film thickness and electric field strength. The drift velocity was found to be linear with applied field below about 2 x 10(8) V/m and deviated from linearity above this. To a large extent, D(3)O(+) and Cs(+) motion in 3MP was well predicted by a simple continuum-based ion mobility model in films from 25 to 20 000 ML thick (including pronounced perturbations 7 ML from both the vacuum and Pt interfaces). The mobility varied with temperature more slowly than predicted by Stokes' law, which may be due to extended inhomogeneous structures in the 3MP near its glass transition at 77 K.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000248020000030&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Physics, Atomic, Molecular & Chemical; SCI(E); EI; 4; ARTICLE; 2; 127
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/250027]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Bell, Richard C.,Wu, Kai,Iedema, Martin J.,et al. Hydronium ion motion in nanometer 3-methyl-pentane films[J]. journal of chemical physics,2007.
APA	Bell, Richard C.,Wu, Kai,Iedema, Martin J.,&Cowin, James P..(2007).Hydronium ion motion in nanometer 3-methyl-pentane films.journal of chemical physics.
MLA	Bell, Richard C.,et al."Hydronium ion motion in nanometer 3-methyl-pentane films".journal of chemical physics (2007).