| 초록 |
It is a major challenge of our time to develop sustainable chemical processes and to reduce the amount of waste generated by the chemical industry. Particularly solvents, often harmful for the environment, accumulate in many of the chemical processes. Our group develops new synthesis concepts, completely avoiding the use of any solvents. These syntheses are based on mechanochemistry. We utilize mechanical energy, which is brought into the system by ball milling, to initiate chemical reactions, rather than temperature as in conventional thermally-induced reactions. With this, an unconventional chemistry is possible with different reaction mechanism, reaction products, and product selectivities as compared to classical solvent-based syntheses. We are focusing on the mechanochemical synthesis of linear polymers, hyper-branched polymers and porous polymer framework. Therefore, we utilize polycondensation-, C-C-cross-coupling-, Friedel-Crafts- and oxidative polymerization reactions. Recently, we developed a novel concept for polymerization denoted as direct mechanocatalysis. Therein, the milling balls themselves are utilized as polymerization catalysts making the use of any catalyst additives as well as their solubility obsolete. We are highly motivated by the fundamental curiosity how ball-milling, commonly utilized to destroy matter, can be applied to construct fragile and defined framework materials. |
