STM study of trans-stilbene self-organized on the AgtGe(111)-(√3 x √3)R30° surface

被引：18

作者：

Tsai, CS

Su, C ^{[1
]}

Wang, JK

Lin, JC

机构：

[1] Natl Taipei Univ Technol, Inst Organ & Polymer Mat, Taipei 106, Taiwan

[2] Acad Sinica, Inst Atom & Mol Sci, Taipei 106, Taiwan

[3] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 106, Taiwan

[4] Natl Taiwan Normal Univ, Dept Chem, Taipei 106, Taiwan

来源：

LANGMUIR | 2003年 / 19卷 / 03期

关键词：

D O I：

10.1021/la0207062

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The interfacial structures of trans-stilbene (TSB) on Ag/Ge(111)-(root3 x root3)R30degrees were studied by low-temperature scanning tunneling microscopy (LT-STM) in ultrahigh vacuum (UHV). Stilbene overlayers were prepared by vapor deposition at a substrate temperature of 200 K and imaged after the samples were cooled to 100 K. High-resolution images allow the identification of individual molecules, with TSB appearing with a distinctive dumbbell shape. From in situ observation of the substrate lattice, the TSB monolayers were found to form a (2 x 1) structure. Due to the excellent matching of unit cell length for Ag/Ge(111)-(root3- x root3)R30degrees to the molecular length of TSB, the interaction between TSB and the substrate surface plays the controlling role in influencing the structure of the TSB overlayers. A model for the unit cell of TSB monolayers is proposed and discussed.

引用

页码：822 / 829

页数：8

共 36 条

[1] Self-assembly of 1-nitronaphthalene on Au(111) [J].