Orientation of molecules at a liquid surface revealed by ion scattering and recoiling spectroscopy

被引：9

作者：

Gannon, TJ ^{[1
]}

Tassotto, M ^{[1
]}

Watson, PR ^{[1
]}

机构：

[1] Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA

来源：

CHEMICAL PHYSICS LETTERS | 1999年 / 300卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0009-2614(98)01378-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Analysis of the kinetic energy of scattered inert gas ions and ejected recoil atoms reveals the identity of atoms in the topmost atomic surface layers of liquids. Spectra from bis(2-ethylhexyl)phthalate (DOP) and bis(2-ethylhexyl)chlorendate (BEHC), two molecules with similar 'head-tails' structures, show that the molecules have somewhat different surface orientations. Atom ratios derived from peak intensity ratios show that neither molecule has an exclusively 'heads-up' orientation at the surface. A 'head-down' orientation is favored for DOP. For BEHC, part of the ring (head) that includes 2-3 Cl atoms is at the surface. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：163 / 168

页数：6

共 10 条

[1] MODEL OF SECONDARY-ELECTRON YIELDS FROM ATOMIC AND POLYATOMIC ION IMPACTS ON COPPER AND TUNGSTEN SURFACES BASED UPON STOPPING-POWER CALCULATIONS [J].