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Department Chemie
Weiche Materie
Prof. Dr. Klaus Huber
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Wir untersuchen intermolekulare und intramolekulare Strukturbildung mit dem Ziel, Bildungsmechanismen zu verstehen und darauf aufbauend Steuerungsmöglichkeiten in den entsprechenden Prozessen zu entwickeln. Es werden statische und dynamische Lichtstreuung (LS), Neutronenkleinwinkelstreuung (SANS) und normale und anomale Röntgenkleinwinkelstreuung (SAXS) eingesetzt, wobei ein Schwerpunkt im Einsatz zeitaufgelöster Experimente mit den eben genannten Streumethoden liegt.
Gegenwärtig werden vier untereinander verwandte Fragestellungen bearbeitet:

Nucleation and growth of particles are essential features of the formation of stable and metastable solid phases in a bottom-up approach. These processes are of fundamental importance, bearing considerable relevance to countless processes in nature and industry. Typical examples are the generation of nanoparticles of noble metals, the formation of high performance materials from supersaturated solution of calcium carbonates and phosphates in nature or the development of highly porous materials like metal organic frameworks (MOF) in order to store hydrogen or to act as catalysts. By applying...

Numerous synthetic, low molecular weight compounds like organic azo-dyestuffes form fiber-like aggregates in solution in close analogy to proteins of living cells. The underlying processes can be regarded as physical polymerisations with a structural diversity, which is just as large as the complexity observed in macromolecular chemistry. In order to reveal general principles on this self-assembly, several low molecular weight systems like anionic azo-dyestuffs have been selected for a detailed investigation with time resolved LS. These systems shall be compared with the behaviour of...

Polymer chains with electric charges along the chain backbones act extremely sensitive towards the addition of inorganic salts from specifically interacting cations (SIC) or changes of pH and temperature. Typical SICs interacting specifically with the anionic carboxylate residues of polyacrylates are alkaline earth cations or transition metal cations like Ag+ or Pb2+. This is reflected in a drastic change of the polyelectrolyte coil dimensions and eventually in a precipitation of the respective polyelectrolyte salt, once the SIC content is large enough. It is this sensitivity to SICs which...

Spherical colloids exhibit striking analogies to atoms and to small proteins. Unlike to atoms, interaction potentials of colloids can be modified by means of chemical surface modification or with the help of additives. This renders them a class of compounds which is highly suitable to investigate interaction patterns of proteins and to tune organization of colloids into highly ordered assemblies. We focus on the design of new colloidal systems capable of forming crystal-like assemblies while at the same time bearing specific optical properties. To give but an example, we currently prepare...


Dr. rer. nat., Dipl. Chem. Klaus Huber

Physikalische Chemie - Arbeitskreis Huber


Klaus Huber
+49 5251 60-2125
+49 5251 60-4208
NW 1 834

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