SOLVENT EFFECTS ON THE MONOLAYER STRUCTURE OF LONG N-ALKANE MOLECULES ADSORBED ON GRAPHITE

被引:95
作者
HERWIG, KW [1 ]
MATTHIES, B [1 ]
TAUB, H [1 ]
机构
[1] UNIV MISSOURI,MISSOURI UNIV RES REACTOR FACIL,COLUMBIA,MO 65211
关键词
D O I
10.1103/PhysRevLett.75.3154
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Neutron diffraction patterns of dotriacontane (n-C32D66) monolayers adsorbed on an exfoliated graphite substrate from a heptane (n-C7D16) solution reveal striking differences in the molecular orientation, lattice constant, and coherence length from those of the same monolayer adsorbed from the gas phase. Neither n-C32D66 monolayer phase appears to be fully consistent with Groszek's model of n-alkane registry on the graphite (0001) surface. A reversible transformation between the two monolayer phases can be induced by adding as little as a monolayer of the heptane solvent.
引用
收藏
页码:3154 / 3157
页数:4
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