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Lecture

Honeycomb films prepared by the breath figure technique can be used as templates for inorganic compounds

Thursday (09.05.2019)
10:00 - 10:20
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Organic-inorganic hybrid materials are interesting for many applications, ranging from biomimetics to catalysis. One important factor for the performance of the material is the microscopic structure. The presentation is about the preparation of mesoporous (in the range of one to several micrometer) polymer films, that are prepared by the so-called breathfigure technique. Those films can act as templates for biomimerals, such as calcium carbonate (a component of seashells, diatoms, and snails), or apatite (a component of teeth enamel and bone). The films and the resulting mesoscopic hybrid materials were characterized by scanning electron microscopy. Also, a diffuson controlled process in an aqueous solution can lead to fractal growths of inorganic curliflower-like structures.

Solvent Effect of the Adsorption of Titanium Dioxide Nanoparticles onto Microporous Polymer Films, T. T. Meiling, H.-G. Löhmannsröben, K. Kon, O. Karthaus, e-J. Surf. Sci. Nanotech., 8, 309-312 (2010). Preparation of Patterned Zinc Oxide Films by Breath Figure Templating, O. Karthaus, K. Kon, K. Hidaka, C. Brauer H.-G. Löhmannsröben, Langmuir 2010, 26(14), 12173–12176. Growth of Micro-Ikebana on a Floating Substrate: A Method to Monitor Local Supersaturation Levels, Viktor Fischer, Olaf Karthaus, Phys. Chem. Chem. Phys., 17, 6695-6699 (2015). Micro-Ikebana by Biomimetic Crystallization of Alkaline Earth Carbonates, Shota Kobayashi, Olaf Karthaus, Viktor Fischer, e-J. Surf. Sci. Nanotech. 15, 65-68 (2017)

 

Speaker:
Prof. Dr. Olaf Karthaus
Chitose Institute of Science and Technology