Bert F. Sels

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BACKGROUND Probiotic bacteria are increasingly used as immunomodulatory agents. Yet detailed molecular knowledge on the immunomodulatory molecules of these bacteria is lagging behind. Lipoteichoic acid (LTA) is considered a major microbe-associated molecular pattern (MAMP) of Gram-positive bacteria. However, many details and quantitative data on its immune(More)
[*] Prof. B. F. Sels, G. De Cremer, E. Bartholomeeusen, Prof. D. E. De Vos Department of Microbial and Molecular Systems Katholieke Universiteit Leuven Kasteelpark Arenberg 23, B-3001 Leuven (Belgium) E-mail: Dr. T. Vosch, Dr. J.-I. Hotta, Dr. M. B. J. Roeffaers, E. Coutiño-Gonzalez, Prof. J. Hofkens Department of Chemistry,(More)
Metal-organic frameworks (MOFs) are a class of crystalline materials that consist of metal ions and organic ligands linked together by coordination bonds. Because of their porosity and the possibility of combining large surface areas with pore characteristics that can be tailored, these solids show great promise for a wide range of applications. Although(More)
We report a change in the semimetallic nature of single-layer graphene after exposure to oxygen plasma. The resulting transition from semimetallic to semiconducting behavior appears to depend on the duration of the exposure to the plasma treatment. The observation is confirmed by electrical, photoluminescence and Raman spectroscopy measurements. We explain(More)
Following its widespread use in biomedical research, fluorescence microscopy has recently been introduced in the catalysis field to study chemocatalytic processes with a high spatiotemporal resolution, a unique sensitivity down to the single molecule level and this under in situ conditions. This tutorial review is structured around the length scales that(More)
Increasing demand for renewable feedstock-based chemicals is driving the interest of both academic and industrial research to substitute petrochemicals with renewable chemicals from biomass-derived resources. The search towards novel platform chemicals is challenging and rewarding, but the main research activities are concentrated on finding efficient(More)
[*] Prof. D. E. De Vos, R. Ameloot, Dr. E. Gobechiya, Prof. J. A. Martens, Dr. L. Alaerts, Prof. B. F. Sels Department of Microbial and Molecular Systems Center for Surface Chemistry and Catalysis Katholieke Universiteit Leuven Kasteelpark Arenberg 23, B-3001 Leuven (Belgium) E-mail: Dr. H. Uji-i, Prof. J. Hofkens Department of(More)
Ternary Ag/Magnesia-silica catalysts were tested in the direct synthesis of 1,3-butadiene from ethanol. The influence of the silver content and the type of silica source on catalytic performance has been studied. Prepared catalysts were characterized by (29) Si NMR, N2 sorption, small-angle X-ray scattering measurements, XRD, environmental scanning electron(More)
For almost a century, heterogeneous catalysts have been at the heart of countless industrial chemical processes, but their operation at the molecular level is generally much less understood than that of homogeneous catalysts or enzymes. The principal reason is that despite the macroscopic dimensions of solid catalyst particles, their activity seems to be(More)