Self-Assembled Monolayers of a Bis(pyrazol-1-yl)pyridine-Substituted Thiol on Au(111)

被引：41

作者：

Shen, Cai ^{[2
]}

Haryono, Marco ^{[1
]}

Grohmann, Andreas ^{[1
]}

Buck, Manfred ^{[2
]}

Weidner, Tobias ^{[3
]}

Ballav, Nirmalya ^{[3
]}

Zharnikov, Michael ^{[3
]}

机构：

[1] Tech Univ Berlin, Inst Chem, D-10623 Berlin, Germany

[2] Univ St Andrews, Sch Chem, EaStCHEM, St Andrews KY16 9ST, Fife, Scotland

[3] Heidelberg Univ, D-69120 Heidelberg, Germany

来源：

LANGMUIR | 2008年 / 24卷 / 22期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1021/la8019974

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Self-assembled monolayers (SAMs) of a bis(pyrazol-1-yl)pyridine-substituted thiol (bpp-SH) on Au (111)/mica were studied with scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), and near-edge X-ray absorption fine structure spectroscopy (NEXAFS). Using substrates precoated with perylene-3,4,9,10-tetracarboxylic acid dianhydride (PTCDA), preparation at elevated temperatures yields highly ordered layers whose structure is described by a rectangular (5 x root 3) unit cell containing one molecule. The bis(pyrazol-1-yl)pyridine (bpp) units exhibit pi-stacking along the < 11 (2) over bar > direction, and they are tilted significantly. We conclude the three imine nitrogen atoms in the bpp headgroup adopt a trans,trans arrangement.

引用

页码：12883 / 12891

页数：9

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