2-Phenylprop-2-yl dithiobenzoate

Using a SAM of an asymmetric azo compounds Baum and Brittain [327] homo-and block copolymerized styrene, MMA and N,N -dimethylacrylamide under RAFT conditions in the presence of 2-phenylprop-2-yl dithiobenzoate as the chain... 

To make further use of the azo-initiator, tethered diblock copolymers were prepared using reversible addition fragmentation transfer (RAFT) polymerization. Baum and co-workers [51] were able to make PS diblock copolymer brushes with either PMMA or poly(dimethylacrylamide) (PDMA) from a surface immobihzed azo-initiator in the presence of 2-phenylprop-2-yl dithiobenzoate as a chain transfer agent (Scheme 3). The properties of the diblock copolymer brushes produced can be seen in Table 1. The addition of a free initiator, 2,2 -azobisisobutyronitrile (AIBN), was required in order to obtain a controlled polymerization and resulted in the formation of free polymer chains in solution. 

Baum et al. apphed RAFT polymerization to synthesize brushes of PS, PMMA, poly(Nd -dimethylacrylamide) (PDMA), and their copolymers on azo-initiator-bound sihcate surfaces [127]. 2-Phenylprop-2-yl dithiobenzoate was added as a free (unboimd) RAFT agent to control the graft polymerization. Because of a very low concentration of surface-bound initiator, a free... 

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