Miniaturized catalysis: monolithic, highly porous, large surface area capillary flow reactors constructed from polyhedral oligomeric silsesquioxanes (POSS).

A single-step molding process utilizing free-radical cross-linking reaction of vinyl POSS in microliter-sized dimensions leads to hierarchically-structured, mechanically robust, porous hybrid structures. Functional variants show excellent performance in Suzuki-type coupling reactions. Due to their small volume, long-term operational robustness, and potential chemical diversity, these materials are promising candidates for catalyst screening applications.

Conceptual design of large surface area porous polymeric hybrid media based on polyhedral oligomeric silsesquioxane precursors: preparation, tailoring of porous properties, and internal surface functionalization.

We report on the preparation of hybrid, organic-inorganic porous materials derived from polyhedral oligomeric vinylsilsesquioxanes (vinylPOSS) via a single-step molding process. The monolithic, large surface area materials are studied with a particular focus on morphology and porous properties. Radical vinyl polymerization of the nanometer-sized POSS building blocks is therefore utilized via a thermally initiated route and in porogenic diluents such as tetrahydrofuran and polyethylene glycols of varying composition.

[Discussion on the substitution of anterior crucial ligament in knee capsule instabilities (author's transl)].

The conventional methods of rehabilitation plasty of the insufficient anterior crucial ligament will usually display elasticity in course of time. Accurate reconstructions of all capsular ligament lesions and the reinforcement by threads of the requisite connective tissue transplants, show good stability and a good overall result four years after the operation in a relatively small number of patients.