STRUCTURAL PHASE-TRANSITION OF A 1-DODECANOL MONOLAYER PHYSISORBED AT THE LIQUID GRAPHITE INTERFACE BY SCANNING TUNNELING MICROSCOPY

被引:57
作者
YEO, YH [1 ]
MCGONIGAL, GC [1 ]
THOMSON, DJ [1 ]
机构
[1] UNIV MANITOBA,DEPT ELECT & COMP ENGN,WINNIPEG R3T 2N2,MANITOBA,CANADA
关键词
D O I
10.1021/la00027a006
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The adsorption of a 1-dodecanol monolayer at the liquid/graphite interface was investigated using the scanning tunneling microscope. Two distinct adsorbed structures were observed between the bulk 1-dodecanol melting temperature (297 K) and the adsorbed layer melting temperature (333 K). The molecular packing arrangement shows a herringbone structure at 303 and 308 K, while at 313 K the monolayer exhibits a structure similar to that of the bulk crystal of 1-dodecanol. This monolayer phase transition may proceed via a rotator phase similar to those observed in solid 1-alkanols at higher temperature.
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页码:649 / 651
页数:3
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