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6595628 
Journal Article 
Quinone transfer radical polymerization of styrene: Synthesis of the actual initiator 
Debuigne, A; Caille, , JR; Jerome, R; , 
2006 
Yes 
Journal of Polymer Science. Part A, Polymer Chemistry
ISSN: 0887-624X
EISSN: 1099-0518 
WILEY 
HOBOKEN 
44 
3 
1233-1244 
English 
WOS:000234780700018 
ortho-Quinones, such as phenanthrenequinone and 3,6-dimethoxyphenanthrenequinone, added with a catalytic amount of metal complexes, impart control to styrene polymerization via the previously reported quinone transfer radical polymerization (QTRP) process. In this study, compounds that mimic the dormant species proposed in the QTRP mechanism have been synthesized and tested as initiators in the presence of cobalt(II) acetylacetonate. These compounds, and particularly 3,6-dimethoxy-10-hydroxy-10-(l-phenyl-ethyl)-phenanthren-9-one, are effective control agents for the radical polymerization of styrene, in agreement with the recently proposed mechanism. Moreover, the induction period, which has been systematically reported in the presence of ortho-quinones, is no longer observed. The end capping of the polystyrene chains by the control agent has been confirmed by H-1 NMR analysis. (c) 2005 Wiley Periodicals, Inc. 
Catalysis; Living polymerization; Polystyrene; Radical polymerization