Controlled radical polymerization of styrene in the presence of lithium molybdate(V) complexes and benzylic halides

How the interplay of different control mechanisms affects the initiator efficiency factor in controlled radical polymerization: An investigation using organometallic MoIII-based catalysts

“…This result does not seem consistent with a low trapping rate, because the sterically more encumbering 2,6-iPr 2 C 6 H 3 -substituted system should in principle yield a more hindered atom transfer process. It is relevant to note here that low efficiency factors have also sometimes been observed for other systems, but they are not systematically underlined nor their explanation is attempted [6,7,23]. We have consequently decided to further explore this issue, and the results of our studies are reported herein.…”

Synthesis of water-soluble Mo(0) tetracarbonyl complexes containing nitrogen donor ligands and polymerization of methyl methacrylate

“…Poly(methyl methacrylate) (PMMA) is still one of the most popular polymeric materials used in industry, so that polymerization reaction of methyl methacrylate (MMA) initiated by transition metal complexes in the presence of chlorinated solvents has been studied widely by many investigators [8][9][10]. Previous works in our group have shown that Mo(0) tetracarbonyl complexes of bidendate phosphine or nitrogen donor ligands can polymerize methyl methacrylate in CCl 4 /toluene mixtures [11,12].…”

Structural and Mechanistic Aspects of Copper Catalyzed Atom Transfer Radical Polymerization

“…This new process, named atom transfer radical polymerization (ATRP) [34] , has had a tremendous impact on the synthesis of macromolecules with well-defined compositions, architectures, and functionalities [36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51 , 52] . ATRP has been successfully mediated by a variety of metals, including those from groups IV (Ti [53] ), VI (Mo [54,55,56] ), VII (Re [57] ), VIII (Fe [58,59,60,61] , Ru [35,62] and Os [63,64] ), IX (Rh [65] and Co [66] ), X (Ni [67,68] and Pd [69] ), and XI (Cu [34,47,70] ). Copper complexes have been the most thoroughly investigated in ATRP and are perhaps the most efficient catalysts, based on broad range of monomers and applicability to diverse reaction media.…”