INFLUENCE OF MULTIVALENT METAL-IONS ON THE MONOLAYER AND MULTILAYER PROPERTIES OF SOME UNSATURATED FATTY-ACIDS
INFLUENCE OF MULTIVALENT METAL-IONS ON THE MONOLAYER AND MULTILAYER PROPERTIES OF SOME UNSATURATED FATTY-ACIDS
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DOI：
10.1021/la00011a053
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发表时间：
1995-11-01
期刊：
影响因子：
3.9
通讯作者：
ROSENHOLM, JB
中科院分区：
文献类型：
--
作者：
LINDEN, M;ROSENHOLM, JB
研究了十八酸(硬脂酸，SA)单分子膜及其三种不饱和衍生物对引入亚相的MnCl2、CdCl2和TbCl3的灵敏度随电解液浓度的变化。所研究的不饱和脂肪酸是顺-9-十八烯酸(油酸，GA)、反式-6-十八烯酸(石油酸，PA)和反式-9-十八烯酸(EA，EA)。单分子膜的缩合顺序遵循酸的整体熔点。用衰减全反射傅里叶变换红外光谱测定了多层膜的离解度，结果与浮动单分子膜的结果很好地吻合。金属离子可以通过增加与单层的相互作用来排序，如Mn2+和Lt；Cd2+
The sensitivity of octadecanoic acid (stearic acid, SA) monolayers and of three unsaturated derivatives thereof toward MnCl2, CdCl2, and TbCl3 introduced to the subphase has been investigated as a function of electrolyte concentration. The unsaturated fatty acids studied were cis-9-octadecenoic acid (oleic acid, GA), trans-6-octadecenoic acid (petroselaidic acid, PA), and trans-9-octadecenoic acid (elaidic acid, EA). The order of condensation of the monolayers followed the bulk melting points of the acids. The dissociation degree determined for multilayers by attenuated total reflectance Fourier transform IR in excellent agreement with the results obtained for the floating monolayers. The metal ions could be ordered in terms of increasing interaction with the monolayers as Mn2+ < Cd2+