Lee, Gue Seon Lee, Hyo Won Lee, Hyun Sub Do, Taeyang Do, Jean-Louis Lim, Jeewoo Peterson, Gregory, I Friscic, Tomislav Kim, Jeung Gon 2024-01-19T11:02:25Z 2024-01-19T11:02:25Z 2022-09-29 2022-10 2041-6520 https://pubs.kist.re.kr/handle/201004/114499 Ruthenium-alkylidene initiated ring-opening metathesis polymerization has been realized under solid-state conditions by employing a mechanochemical ball milling method. This method promotes greenness and broadens the scope to include mechano-exclusive products. The carbene- and pyridine-based Grubbs 3(rd)-generation complex outperformed other catalysts and maintained similar mechanistic features of solution-phase reactions. High-speed ball milling provides sufficient mixing and energy to the solid reaction mixture, which is composed of an initiator and monomers, to minimize or eliminate the use of solvents. Therefore, the solubility and miscibility of monomers and Ru-initiators are not limiting factors in solid-state ball milling. A wide variety of solid monomers, including ionomers, fluorous monomers, and macromonomers, were successfully polymerized under ball milling conditions. Importantly, direct copolymerization of immiscible (ionic/hydrophobic) monomers exemplifies the synthesis of mechano-exclusive polymers that are difficult to make using traditional solution procedures. Finally, the addition of a small amount of a liquid additive (i.e., liquid-assisted grinding) minimized chain-degradation, enabling high-molecular-weight polymer synthesis. English Royal Society of Chemistry Mechanochemical ring-opening metathesis polymerization: development, scope, and mechano-exclusive polymer synthesis Article 10.1039/d2sc02536a 1 Chemical Science, v.13, no.39, pp.11496 - 11505 Chemical Science 13 39 11496 11505 Y scie scopus 000854648300001 Chemistry, Multidisciplinary Chemistry Article OLEFIN METATHESIS SOLVENT-FREE POLY(LACTIC ACID) BLOCK-COPOLYMERS ROMP POLYCONDENSATION CATALYSTS EFFICIENT STYRENE