Self-assembly of terephthalic acid on rutile TiO2(110):: Toward chemically functionalized metal oxide surfaces

被引：38

作者：

Tekiel, Antoni ^{[1
]}

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

Godlewski, Szymon ^{[1
]}

Budzioch, Janusz ^{[1
]}

Szymonski, Marek ^{[1
]}

机构：

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

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 33期

关键词：

D O I：

10.1021/jp804979t

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：

Self-organization of 1,4-benzenedicarboxylic acid molecules (terephthalic acid, TPA) on a rutile TiO2(110)(1x1) surface is studied by means of ultra-high vacuum scanning tunneling microscopy (STM) and noncontact atomic force microscopy (nc-AFM). When saturation coverage is achieved with the formation of one monolayer, STM images reveal two alternating contrast patterns: (i) a well-organized (2x1) structure and (ii) a mixed structure of molecular rows oriented along, the 001 crystallographic direction. Complementary STM images recorded with two different tip terminations prove that the two contrasting patterns indicate the same stable surface structure. The nc-AFM imaging confirms the mixed molecular row structure. It is concluded that TPA molecules are adsorbed in an upright position. This occurs with one of the carboxyl group bound dissociatively in a bi-dentate fashion with the two 5-fold coordinated Ti atoms. The second carboxyl group is exposed to the vacuum interface. This carboxyl terminated surface is discussed in terms of surface chemical functionalization.

引用

页码：12606 / 12609

页数：4

共 17 条

[1] Oriented growth of the metal organic framework Cu3(BTC)2(H2O)3•xH2O tunable with functionalized self-assembled monolayers [J].