Publications de Alexander Langner

Modeling Ferro- and Antiferromagnetic Interactions in Metal-Organic Coordination Networks

Klaus Kern, Sebastian Stepanow, Violetta Sessi, Alexander Langner, Tzu-Chun Tseng, Nasiba Abdurakhmanova, Christopher Seiji Kley

Magnetization curves of two rectangular metalorganic coordination networks formed by the organic ligand TCNQ (7,7,8,8-tetracyanoquinodimethane) and two different (Mn and Ni) 3d transition metal atoms [M(3d)] show marked differences that are explained using ...

Amer Chemical Soc2015

Bonding and Charge Transfer in Metal-Organic Coordination Networks on Au(111) with Strong Acceptor Molecules

Klaus Kern, Sebastian Stepanow, Alexander Langner, Nan Jiang

The geometric and electronic structure of two structurally similar metal organic networks grown on the Au(111) surface is investigated by scanning tunnelling microscopy (STM) and spectroscopy (STS) combined with density functional theory (DFT) calculations ...

Amer Chemical Soc2012

Charge-transfer-induced structural rearrangements at both sides of organic/metal interfaces

Klaus Kern, Alexander Langner, Tzu-Chun Tseng, Yang Wang

Organic/metal interfaces control the performance of many optoelectronic organic devices, including organic light-emitting diodes or field-effect transistors. Using scanning tunnelling microscopy, low-energy electron diffraction, X-ray photoemission spectro ...

2010

Self-assembly of multiligand supramolecular architectures at metal surfaces

Alexander Langner

Self-assembly of organic molecules represents an efficient and convenient bottom-up approach for the structural functionalization of surfaces at the nanometer scale. The great potential of assembling supramolecular architectures from organic molecules lies ...

EPFL2009

Two- to one-dimensional transition of self-assembled coordination networks at surfaces by organic ligand addition

Klaus Kern, Alexander Langner

Two-dimensional metal-organic coordination networks at a Cu(100) surface are transformed to a new supramolecular structure with one-dimensional coordination character by the addition of a second organic ligand. ...

Royal Society of Chemistry2009

Assembling Isostructural Metal-Organic Coordination Architectures on Cu(100), Ag(100) and Ag(111) Substrates

Klaus Kern, Alexander Langner

2008

Ordering and Stabilization of Metal-Organic Coordination Chains by Hierarchical Assembly through Hydrogen Bonding at a Surface

Klaus Kern, Alexander Langner

Wiley-VCH Verlag GmbH2008

Template-directed supramolecular self-assembly of coordination dumbbells at surfaces

Klaus Kern, Alexander Langner

Scanning tunneling microscopy reveals, at single-molecular resolution, how external parameters-substrate morphology and guest addition-re-direct the assembly of dumbbell-shaped coordination supramolecules towards different surfaceconfined supramolecular or ...

Royal Society of Chemistry2007