Adsorption of Large Organic Molecules on Clean and Hydroxylated Rutile TiO2(110) Surfaces

被引：11

作者：

Godlewski, Szymon ^{[1
]}

Tekiel, Antoni ^{[1
,2
]}

Budzioch, Janusz ^{[1
]}

Gourdon, Andre ^{[3
]}

Prauzner-Bechcicki, Jakub S. ^{[1
]}

Szymonski, Marek ^{[1
]}

机构：

[1] Jagiellonian Univ, Fac Phys Astron & Appl Comp Sci, Ctr Nanometer Scale Sci & Adv Mat NANOSAM, PL-30059 Krakow, Poland

[2] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

[3] UPS, CNRS, CEMES, Nonosci Grp, F-31055 Toulouse 04, France

来源：

CHEMPHYSCHEM | 2009年 / 10卷 / 18期

基金：

欧盟第七框架计划;

关键词：

adsorption; conformation analysis; scanning probe microscopy; semiconductors; single-molecule studies; HIGH-RESOLUTION STM; LANDER MOLECULES; TEREPHTHALIC ACID; TITANIUM-DIOXIDE; SINGLE-MOLECULE; WIRE; PHTHALOCYANINE; CONDUCTANCE; CU(211);

D O I：

10.1002/cphc.200900606

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Behavior of large organic molecules equipped with spacer groups (Violet Landers, VL) on the TiO2(110)-(1x1) surfaces is investigated by means of high-resolution scanning tunneling microscopy (STM). Two distinct adsorption geometries are observed. We demonstrate that the molecule adsorption morphology can be alternated by well-controlled STM tip-induced manipulation. It is used to probe the mobility of molecules and reveals locking in one of the analyzed adsorption sites, thus allow to enhance or reduce the mobility along the [001] direction. Field induced hydrogen desorption is used to perform lateral STM manipulation on a hydroxyl-free surface, which provides insight into the influence of surface hydroxyl groups on the molecule behavior. The ability to image with submolecular resolution both the central board and the spacer groups of the VL molecule is demonstrated.

引用

页码：3278 / 3284

页数：7

共 39 条

[1] Molecular 'OR' and 'AND' logic gates integrated in a single molecule [J].