Adsorption and Assembly of Copper Phthalocyanine on Cross-Linked TiO2(110)-(1 × 2) and TiO2(210)

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• 作者：Yongfeng Wang ; Yingchun Ye ; Kai Wu
• 刊名：Journal of Physical Chemistry B
• 出版年：2006
• 出版时间：September 14, 2006
• 年：2006
• 卷：110
• 期：36
• 页码：17960 - 17965
• 全文大小：1044K
• 年卷期：v.110,no.36(September 14, 2006)
• ISSN：1520-5207

文摘

Copper phthalocyanine (CuPc) on reconstructed rutile TiO₂ was studied with ultrahigh vacuum variabletemperature scanning tunneling microscopy. On cross-linked TiO₂(110)-(1 × 2), the CuPc molecules at lowcoverages sparsely lay flat at the link sites and tilted in troughs between [001] rows. Increase of the CuPccoverage led to the trapping of the CuPc molecules by the rectangular surface cells fenced by the oxygencolumns along the [001] direction and the cross-link rows. Each cell could trap one CuPc molecule atintermediate coverages and two CuPc molecules at higher coverages. On TiO₂(210), the CuPc moleculestilted in defect-free areas and lay at defect sites with their molecular planes parallel to the substrate surface.Further increase of the CuPc coverage induced the formation of one- and two-dimensional assemblies onTiO₂(210).