PRECISE DETERMINATION OF TILT ANGLES BY X-RAY-DIFFRACTION AND REFLECTION WITH ARACHIDIC ACID MONOLAYERS

被引：75

作者：

TIPPMANNKRAYER, P ^{[1
]}

MOHWALD, H ^{[1
]}

机构：

[1] UNIV MAINZ,INST PHYS CHEM,WELDER WEG 11,W-6500 MAINZ,GERMANY

来源：

LANGMUIR | 1991年 / 7卷 / 10期

关键词：

D O I：

10.1021/la00058a054

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Synchrotron X-ray diffraction data with wave-vector transfer parallel and perpendicular to the surface are reported for arachidic acid monolayers on water. The data confirm a recently established structural model of a pressure-dependent chain tilt for molecular areas between 20 and 24 angstrom-2. The very precise measurement of the tilt angle (approximately 1-degree accuracy) gives confidence to angles previously derived from measurements of specular reflectivity. We can also resolve the two different spacings expected for an orthorhombic lattice enabling us to comment on the anisotropy of the compressibility.

引用

页码：2303 / 2306

页数：4

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