科研之友
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摘要
The adsorption of individual [11]anthrahelicene molecules and their self-assembly into monolayer islands on an InSb(001) c(8x2) reconstructed surface is studied with low-temperature scanning probe microscopy A racemic mixture is deposited on atomically flat terraces of InSb at room temperature At lower coverage, the molecules tend to decorate atomic step edges of the substrate At higher coverage, [11]anthrahelicene molecules form 20 islands A quasi-hexagonal ordering of molecules within the layer is identified Furthermore, it is shown that molecules adsorb with the helical axis almost perpendicular to the substrate Interference between tunneling through the molecular layer and directly through space is reported Finally, experimental results are compared to those of theoretical calculations
- 出版日期2010-11-15
