INTERACTION OF CATIONS WITH A FATTY-ACID MONOLAYER - A GRAZING-INCIDENCE X-RAY-FLUORESCENCE AND REFLECTIVITY STUDY

被引:39
作者
DAILLANT, J [1 ]
BOSIO, L [1 ]
BENATTAR, JJ [1 ]
BLOT, C [1 ]
机构
[1] ECOLE SUPER PHYS & CHIM IND,PHYS LIQUIDES & ELECTROCHIM LAB,F-75231 PARIS 05,FRANCE
关键词
D O I
10.1021/la00052a001
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The interaction of Mn2+ cations in the subphase with a behenic acid monolayer has been investigated as a function of surface pressure by using both grazing incidence X-ray fluorescence and X-ray reflectivity. The fluorescence probe provides an accurate determination of the number of cations attracted near the surface (0.47 +/- 0.06 per amphiphilic molecule), and the reflectivity experiments show that these cations are condensed within an extremely thin region (less-than-or-similar-to 0.5 nm). The complete structural parameters of the film and the surface roughness are compared to experimental data obtained with the same compound on pure water.
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页码:611 / 614
页数:4
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