MIXED MONOLAYERS FOR THE DESIGN OF STRUCTURED SURFACES TO INDUCE ORIENTED 3-D CRYSTALLIZATION

被引:34
作者
WEISSBUCH, I [1 ]
MAJEWSKI, J [1 ]
KJAER, K [1 ]
ALSNIELSEN, J [1 ]
LAHAV, M [1 ]
LEISEROWITZ, L [1 ]
机构
[1] RISO NATL LAB,DEPT PHYS,DK-4000 ROSKILDE,DENMARK
关键词
D O I
10.1021/j100151a035
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
Mixed monolayers containing two different amphiphiles C19H39CONHCH2CH2CO2H (A) and C19H39CONH2 (B) were designed in order to form a two-dimensional (2-D) crystalline solid solution in which the A-type molecules form domains within the sea of B-type molecules. A ''continuous'' 2-D arrangement of the aliphatic chains was expected, driven by the amide hydrogen bonding requirement; a tendency for the formation of the embeded A-type domains should be provided by the interactions between the -CH2CH2CO2H head group moieties. The mixed monolayers served to promote the oriented nucleation of silver propionate 3-D crystals attached at the monolayer-solution interface. Only the A-type domains induced silver propionate crystallization whereas the B-type domains were essentially inert. The mixed A + B monolayers were found to be efficient nucleators down to a 1:10 molar ratio, providing proof for the existence of A-type domains. Additional information such as the structure and ion-binding properties of the mixed monolayers was furnished by specular X-ray reflectivity and grazing incidence X-ray diffraction using synchrotron radiation.
引用
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页码:12848 / 12857
页数:10
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