Fritz Haber Institute

Berlin, Germany

Fritz Haber Institute

Berlin, Germany

The Fritz Haber Institute of the Max Planck Society is a science research institute located at the heart of the academic district of Dahlem, in Berlin, Germany.The original Kaiser Wilhelm Institute for Physical Chemistry and Electrochemistry, founded in 1911, was incorporated in the Max Planck Society and simultaneously renamed for its first director, Fritz Haber, in 1953.The research topics covered throughout the history of the institute include chemical kinetics and reaction dynamics, colloid chemistry, atomic physics, spectroscopy, surface chemistry and surface physics, chemical physics and molecular physics, theoretical chemistry, and materials science.During World War I and World War II, the research of the institute was directed more or less towards Germany's military needs.To the illustrious past members of the Institute belong Herbert Freundlich, James Franck, Paul Friedlander, Rudolf Ladenburg, Michael Polanyi, Eugene Wigner, Ladislaus Farkas, Hartmut Kallmann, Otto Hahn, Robert Havemann, Karl Friedrich Bonhoeffer, Iwan N. Stranski, Ernst Ruska, Max von Laue, Gerhard Borrmann, Rudolf Brill, Kurt Moliere, Jochen Block, Heinz Gerischer, Rolf Hosemann , Kurt Ueberreiter, Alexander Bradshaw, Elmar Zeitler, and Gerhard Ertl.Nobel Prize laureates affiliated with the institute include Max von Laue , Fritz Haber , James Franck , Otto Hahn , Eugene Wigner , Ernst Ruska , Gerhard Ertl . Wikipedia.

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The present invention relates to a catalytically active material for the electrochemical oxidation of water, wherein the catalytically active material comprises an amorphous Ir-oxohydroxide, wherein the catalytically active material has a specific surface area (S_(BET)) of 50 m^(2).g^(-1); an electrode coated with the catalytically active material; a proton exchange membrane (PEM) based electrolyzer comprising the electrode; the use of the catalytically active material, the electrode or the electrolyzer the electrochemical oxidation of water; and a process for preparing the catalytically active material comprising the microwave-assisted thermal treatment of a basic solution of an Ir(III) or Ir(IV) complex.

Fritz Haber Institute | Date: 2017-09-13

The present invention inter alia relates to a supported silica bilayer (SiO_(2) bilayer) film. In the supported silica bilayer film, the silica bilayer film consists of two atomic layers of corner-sharing SiO_(4) tetrahedra, forms in itself a chemically saturated structure and contains pores. The silica bilayer film has a first (1) and a second side (2) and is supported on the first side (1) by a removable polymer film. The invention further relates to a process for producing the supported silica bilayer film, a process for transferring a silica bilayer film, a free-standing silica bilayer film, a stack comprising a plurality of silica bilayer films, a filed-effect transistor having a gate oxide comprising the silica bilayer film or a stack thereof and the use of a silica bilayer film.

Ertl G.,Fritz Haber Institute
Annual Review of Physical Chemistry | Year: 2017

I was fortunate to start my career in physical chemistry at a time when the development of the ultrahigh vacuum technique and of novel physical methods enabled the study of processes on well-defined surfaces at an atomic scale. These investigations included the mechanisms of heterogeneously catalyzed reactions, such as CO oxidation and ammonia synthesis, and phenomena of spatio-temporal self-organization, as described by the concepts of nonlinear dynamics. ©2017 by Annual Reviews. All rights reserved.

Freund H.-J.,Fritz Haber Institute
Accounts of Chemical Research | Year: 2017

Understanding the glass-crystal transition in real space using scanning probe microscopy, thus solving a long-standing problem posed during the first half of the 20th century, is the goal of this research. © 2017 American Chemical Society.

Nising C.F.,Bayer AG | Brase S.,Fritz Haber Institute
Chemical Society Reviews | Year: 2012

Oxa-Michael reactions, i.e. addition reactions of oxygen nucleophiles to conjugated systems, have traditionally received much less attention from the scientific community compared to the addition of carbon nucleophiles to conjugate acceptor systems (Michael reaction). This was mainly due to lack of reactivity and selectivity of these reactions. Within the last few years however, there has been a remarkable increase in publications focussing on method development as well as applications to natural product synthesis. This tutorial review discusses instructive examples that have substantially broadened the scope of oxa-Michael reactions. © 2012 The Royal Society of Chemistry.

Hafner A.,Fritz Haber Institute | Brase S.,Fritz Haber Institute
Angewandte Chemie - International Edition | Year: 2012

A silver key to add CF 3: In presence of in situ generated AgCF 3, it is possible to trifluoromethylate aromatic triazenes in high ortho selectivity and good yields by means of a C-H substitution (see scheme). Owing to the further transformation possibilities offered by triazenes, a variety of CF 3-substituted building blocks are then accessible. © 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

Gobre V.V.,Fritz Haber Institute | Tkatchenko A.,Fritz Haber Institute
Nature Communications | Year: 2013

Van der Waals interactions have a fundamental role in biology, physics and chemistry, in particular in the self-assembly and the ensuing function of nanostructured materials. Here we utilize an efficient microscopic method to demonstrate that van der Waals interactions in nanomaterials act at distances greater than typically assumed, and can be characterized by different scaling laws depending on the dimensionality and size of the system. Specifically, we study the behaviour of van der Waals interactions in single-layer and multilayer graphene, fullerenes of varying size, single-wall carbon nanotubes and graphene nanoribbons. As a function of nanostructure size, the van der Waals coefficients follow unusual trends for all of the considered systems, and deviate significantly from the conventionally employed pairwise-additive picture. We propose that the peculiar van der Waals interactions in nanostructured materials could be exploited to control their self-assembly. © 2013 Macmillan Publishers Limited. All rights reserved.

Ertl G.,Fritz Haber Institute
Angewandte Chemie - International Edition | Year: 2013

Scratching the surface: For over 100 years the interactions of molecules at surfaces have been studied at the Fritz Haber Institute of the Max Planck Society, Berlin. Nobel Laureate Gerhard Ertl looks back at some of the key developments in this time, and the people who made them. © 2013 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

Kronik L.,Weizmann Institute of Science | Tkatchenko A.,Fritz Haber Institute
Accounts of Chemical Research | Year: 2014

Molecular crystals are ubiquitous in many areas of science and engineering, including biology and medicine. Until recently, our ability to understand and predict their structure and properties using density functional theory was severely limited by the lack of approximate exchange-correlation functionals able to achieve sufficient accuracy. Here we show that there are many cases where the simple, minimally empirical pairwise correction scheme of Tkatchenko and Scheffler provides a useful prediction of the structure and properties of molecular crystals.After a brief introduction of the approach, we demonstrate its strength through some examples taken from our recent work. First, we show the accuracy of the approach using benchmark data sets of molecular complexes. Then we show its efficacy for structural determination using the hemozoin crystal, a challenging system possessing a wide range of strong and weak binding scenarios. Next, we show that it is equally useful for response properties by considering the elastic constants exhibited by the supramolecular diphenylalanine peptide solid and the infrared signature of water libration movements in brushite. Throughout, we emphasize lessons learned not only for the methodology but also for the chemistry and physics of the crystals in question.We further show that in many other scenarios where the simple pairwise correction scheme is not sufficiently accurate, one can go beyond it by employing a computationally inexpensive many-body dispersive approach that results in useful, quantitative accuracy, even in the presence of significant screening and/or multibody contributions to the dispersive energy. We explain the principles of the many-body approach and demonstrate its accuracy for benchmark data sets of small and large molecular complexes and molecular solids. © 2014 American Chemical Society.

Asmis K.R.,Fritz Haber Institute
Physical Chemistry Chemical Physics | Year: 2012

This article summarizes the methodological progress that has been made in the vibrational spectroscopy of isolated polynuclear metal oxide clusters, with particular emphasis on free electron laser-based infrared action spectroscopy of gas phase clusters, over the last decade. The possibilities, limitations and prospects of the various experimental approaches are discussed using representative examples from pivotal studies in the field. © 2012 the Owner Societies.

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