A novel ATRP initiating system Fe(dtc)3/FeCl3/PPh3 for MMA polymerization

Living radical polymerization of methyl methacrylate catalyzed by cuprous N,N‐diethyldithiocarbamate

“…It can be realized through three different initiation systems-an organic halide catalyzed by a transition-metal compound in its lower oxidation state, that is, normal ATRP; a conventional radical initiator catalyzed by a transition-metal species, named reverse (or alternative) ATRP; 4 -6 or the organic halide initiator and catalyst generated in situ from the components in the initiation system, having the term of in situ ATRP. [7][8][9] As one of the most important components, the catalyst has been enlarged to several transition-metal halides. 10 After the first reported catalyst, cuprous chloride (CuCl) in normal ATRP, copper(I) species other than halides have been investigated in many labs.…”

Controlled/“Living” Radical Polymerization of Methyl Methacrylate Catalyzed by Cobalt Acetate

“…The peak at 3.8 ppm was attributed to the methoxy protons and the peak at 2.5 ppm was assigned to the methylene protons of the terminal MMA unit containing an v-end chlorine atom, which was similar to results in the literature. [44,45] From the integration intensity ratio of the terminal methylene (d ¼ 2.5) to the methoxy protons (d ¼ 3.6) of the main chain, the molecular weight of PMMA could be calculated. The molecular weight calculated from NMR (M n;NMR ¼ 14 500) agreed with the value measured by GPC (M n;exp ¼ 13 600), suggesting that all the PMMA chains contained chlorine end groups.…”

Reverse atom transfer radical polymerization of stearyl methacrylate using 2,2′‐azobisisobutyronitrile as the initiator

“…Reverse ATRP differs from conventional ATRP in the initiation step, in which the initiating active species or propagating active species can abstract a halogen atom from the oxidized transition-metal complex to form the dormant species and the reduced transition-metal species. 17,27 In this article, we describe the well-controlled reverse ATRP of SMA with a conventional radical initiator, AIBN, and a transition-metal complex of iron at a higher oxidation state complexed with bpy as a catalyst.…”