Two-Dimensional Assembly of Magnetic Binuclear Complexes: a Scanning Tunneling Microscopy Study

被引：4

作者：

Moegele, Florian ^{[2
]}

Fantauzzi, Donato ^{[2
]}

Wiedwald, Ulf ^{[3
]}

Ziemann, Paul ^{[3
]}

Rieger, Bernhard ^{[1
]}

机构：

[1] Tech Univ Munich, WACKER Chair Macromol Chem, D-85747 Garching, Germany

[2] Univ Ulm, Inst Mat & Catalysis, D-89069 Ulm, Germany

[3] Univ Ulm, Inst Solid State Phys, D-89069 Ulm, Germany

来源：

LANGMUIR | 2009年 / 25卷 / 23期

关键词：

METAL-COMPLEXES; SURFACE; MONOLAYERS; COORDINATION; PORPHYRINS; INTERFACE; MOLECULES; COPPER; ANION;

D O I：

10.1021/la9019712

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Mono- and binuclear metal-organic compounds bearing long alkyl chains were synthesized and studied at the liquid/graphite interface using scanning tunneling microscopy. Two different lamellar surface patterns as well as a star like structure were obtained driven by van der Waals interactions of the alkyl chains and weak hydrogen bonds of the phenoxy moieties. In the case of the star like structure solvent molecules (1,2,4-trichlorobenzene) are supposed to play an important role for the stabilization of the created pattern. Magnetic investigation of the bulk material by a superconducting quantum interference device magnetometer revealed magnetic moments up to 1.7(mu B) (NiCo) and most likely anti ferromagnetic coupling between the two metals within a single complex. The presented two-dimensional crystallization of the binuclear complexes may provide an easy access to new designable materials in molecular electronics.

引用

页码：13606 / 13613

页数：8

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