The focus of our research is the tailoring of the inorganic-organic interface in hybrid materials and nanocomposites with special interest in a controlled design of inorganic building blocks such as nanoparticles. The large interface area in these materials requires a specific knowledge in tailoring the chemistry between inorganic and organic moieties. The controlled design of the interface allows the induction of new properties in the final material. Our research is highly interdisciplinary between the fields of inorganic, organic, and polymer chemistry and utilizes a broad spectrum of techniques like X-ray diffraction, common spectroscopic methods, thermo-analytical methods or mechanical tests.

Associated work groups:

Speciation and elemental analyis  
(PD Dr. Ralf Kautenburger)
The working group WASTe (Working group for Analytical Speciation Techniques) is mainly focused on element trace and speciation analysis as well as on the development of innovative coupling techniques

Emmy Noether Research Group 
(Dr. André Schäfer)

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News

October 1, 2021 | Anna Michaely starts her doctoral thesis
Anna Michaely starts her doctoral thesis on „Reductive reactive milling of metal oxides".

September 21, 2021 | Stable Organosilanoles – the slightly different homologs of the alcoholsOrganosilanoles, the silicium homologs of the alcohols, typically are non-isolable molecules and show a high tendency to condensate to oligomeric or polymeric structures.  Only under very specific steric and electronic conditions in the silicon atom, they are known as stable, isolable molecules. Jan-Falk Kannengießer synthesized a number of acrylic-substituted representatives of this compound class by hydrolysis of the alkoxy or chlorine compounds. In the solid state, the products received show strong hydrogen bonds with different structural motifs. The study was published in Chemistry - A European Journal (https://chemistry-europe.onlinelibrary.wiley.com/doi/abs/10.1002/chem.202102729)

 

August 16, 2021 | Research project on water glass
Yannic Curto starts his Master thesis on structure studies of precipitated sodium silicates.

August 14, 2021 | Fluorescent SiO2-Particles – connection makes the difference
Fluorescent nanoparticles are important analysis instruments, especially for biological applications. A mainly used compound class in this field are SiO2-nanoparticles with embedded fluorescent pigments. Such particles are easily accessible and often used. In a recent study, Nadja Klippel showed together with Prof. Gregor Jung, that the connection of the pigments to the particle nucleus is important for their stability. Here, different connection mechanisms of fluorescent xanthene pigments with 30-40nm-sized silica-nanoparticles were examined and compared. Systematic leaching studies over a period of up to 4 days showed, that the covalent connection of the pigments ist essential for the fluorescence stability, as pigments solely connected by physical interaction tend to leach out of porous silica-networks. Coating the silica particles with hydrophobic or hydrophilic protective layers led to a better retention of solely physisorbed pigments and provides the opportunity to adjust the particles to the polarity of the medium. The study was published in the Journal of Sol-Gel Science and Technology (https://link.springer.com/article/10.1007%2Fs10971-021-05578-y).

 

August 12, 2021 | Polysiloxanes with high refraction index
Polycyclic aromatic hydrocarbones as substituents in polysiloxanes, known as silicones, can increase the refraction index to values up to 1.63. Conventional commercially available polysiloxanes only have refraction indices under 1.5. Dennis Meier synthesized the polymers from phenanthrenyl-substituted monomers by polycondensation reactions with other dialkoxysilanes.  The resulting polymers were thermally cross-linked and thus, polysiloxane resins with high refraction index, high optical transparence and high thermal stability of up to 420°C could be obtained. Such materials are mainly used for optical applications. In addition to the publication in the Journal of Polymer Science ( https://onlinelibrary.wiley.com/doi/full/10.1002/pol.20210316), the materials were also patented.

 

August 5, 2021 | Self-healing of nanocomposites by induction heating
Self-healing materials provide an important opportunity to increase the longevity of objects. They are therefore able to contribute to saving resources in the use of raw materials and thus to a more sustainable material development. In a recent study, Bastian Oberhausen showed that embedding superparamagnetic nanoparticles into a polymer matrix allows to induce self-healing by induction heating.  The particle surface was modified with positively charged organic groups and the polymer matrix contained the referring anionic charges. After cutting the sample apart, the parts could be merged again by induction heating and the sample showed its original properties. The study was published in the Journal Nanoscale Advances (https://pubs.rsc.org/en/content/articlelanding/2021/na/d1na00417d).

 

Events

March 21-23, 2022 | Chemiedozententagung at the Saarland University

October 14, 2021 | AC-Colloquium Lectures Winter Term 2021/22

programme

October 1st, 2021 | Lectures Winter Term 2021/22
Lectures

April 1st, 2021 | Lectures Summer Term 2021
Lectures

December 21, 2020 | online-lectures GDCh Winter Term 2020/21
programme

October 9, 2020 | AC-Colloquium Lectures Winter Term 2020/21
Unfortunately, the AC-Colloquium Lectures had to be cancelled completely due to the Covid situation!October 1, 2020 | Winter Term Lectures under Corona-conditions
Winter Term Lectures will start today in line with the official pandemic rules for the Saarland University.
Here, you will find further information on lectures referring to our working group. 
 

Events Archive

Contact

Univ.-Prof. Dr. Guido Kickelbick
Inorganic Solid State Chemistry
Phone: +49-(0)681-302 70651
Fax: +49-(0)681-302 70652
Email

Susanne Limbach
Secretary
Phone: +49-(0)681-302 70650
Fax: +49-(0)681-302 70652
Email

address:
Universität des Saarlandes
Anorganische Festkörperchemie
Campus C4 1, Raum 4.03
66123 Saarbrücken
GERMANY

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location:
information on Campus Saarbrücken, directions and maps