Helmut Cölfen

Morphological Characterization of the Molecular Superstructure of Polyphenylene Ethynylene Derivatives (2007)

Heimo Schnablegger, Markus Antonietti, Christine Göltner, Jürgen Hartmann, Helmut Cölfen, Paolo Samorí, ...

Two different polyphenylene ethynylene derivatives, one partly hydrophobic and one hydrophilic, were investigated with a combination of X-ray and light scattering techniques and hydrodynamic...

From biomineralization polymers to double hydrophilic block and graft copolymers (2007)

Cölfen, Helmut

Precipitation of carbonates: recent progress in controlled production of complex shapes (2003)

Cölfen, Helmut

The combination of colloid-controlled heterogeneous nucleation and polymer-controlled crystallization: Facile synthesis of separated, uniform high-aspect-ratio single-crystalline BaCrO₄ nanofibers (2003)

Yu, S. H., Cölfen, Helmut, Antonietti, Markus

Polymer-controlled morphosynthesis and mineralization of metal carbonate superstructures (2003)

Yu, S. H., Cölfen, Helmut, Antonietti, Markus

An analysis of a polymer additive for calcium carbonate crystallization - a small-angle neutron scattering investigation by applying contrast variation (2003)

Endo, H., Cölfen, Helmut, Schwahn, D.

Hybrid colloid analysis combining analytical ultracentrifugation and flow-field flow fractionation (2003)

Cölfen, Helmut, Völkel, Antje

Higher-order organization by mesoscale self-assembly and transformation of hybrid nanostructures (2003)

Cölfen, Helmut, Mann, S.

Growth and self-assembly of BaCrO₄ and BaSO₄ nanofibers toward hierarchical and repetitive superstructures by polymer- controlled mineralization reactions (2003)

Yu, S. H., Antonietti, Markus, Cölfen, Helmut, Hartmann, Jürgen

Nanocrystal surface structure analysis by analytical ultracentrifugation (2003)

Cölfen, Helmut, Tirosh, S., Zaban, A.

Particle Growth Kinetics in Zirconium Sulfate Aqueous Solutions Followed by Dynamic Light Scattering and Analytical Ultracentrifugation - Implications for Thin Film Deposition (2002)

Cölfen,Helmut, Schnablegger,Heimo, Fischer,Armin, Jentoft,Friederike C., Weinberg,Gisela, Schlögl,Robert

Acidic aqueous solutions of Zr(SO4)2 * 4 H2O can be used to deposit nanocrystalline zirconium oxide films on functionalized surfaces. Because zirconium hydrolyzes easily, such solutions are...

Particle Growth Kinetics in Zirconium Sulfate Aqueous Solutions Followed by Dynamic Light Scattering and Analytical Ultracentrifugation - Implications for Thin Film Deposition (2002)

Cölfen, Helmut, Schnablegger, Heimo, Fischer, Armin, Jentoft, Friederike C., Weinberg, Gisela, Schlögl, Robert

Acidic aqueous solutions of Zr(SO4)2 * 4 H2O can be used to deposit nanocrystalline zirconium oxide films on functionalized surfaces. Because zirconium hydrolyzes easily, such solutions are...

Amorphous layer around aragonite platelets in nacre

Nassif, Nadine, Pinna, Nicola, Gehrke, Nicole, Antonietti, Markus, Jäger, Christian, Cölfen, Helmut

We reveal that the aragonite CaCO3 platelets in nacre of Haliotis laevigata are covered with a continuous layer of disordered amorphous CaCO3 and that there is no protein interaction with this layer....

Amorphous layer around aragonite platelets in nacre

Nassif, Nadine, Pinna, Nicola, Gehrke, Nicole, Antonietti, Markus, Jäger, Christian, Cölfen, Helmut

We reveal that the aragonite CaCO3 platelets in nacre of Haliotis laevigata are covered with a continuous layer of disordered amorphous CaCO3 and that there is no protein interaction with this layer....

Performance of a fast fiber based UV/Vis multiwavelength detector for the analytical ultracentrifuge

Strauss, Holger M., Karabudak, Engin, Bhattacharyya, Saroj, Kretzschmar, Andreas, Wohlleben, Wendel, Cölfen, Helmut

The optical setup and the performance of a prototype UV/Vis multiwavelength analytical ultracentrifuge (MWL-AUC) is described and compared to the commercially available Optima XL-A from Beckman...