Controlled Thioacyl Group Transfer (TAGT) polymerization of cyclic sulfide: Novel approach to AB diblock copolymers by the combination of RAFT and TAGT polymerizations

Macromolecules

Volumn 40, Issue 23, 2007, Pages 8129-8131

  Nagai, Atsushi ^a   Koike, Naoyuki ^a   Kudo, Hiroto ^a   Nishikubo, Tadatomi ^a  

^a KANAGAWA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

BLOCK COPOLYMERS; CATALYSTS; MACROMOLECULES; RING OPENING POLYMERIZATION; SYNTHESIS (CHEMICAL);

MACROMOLECULAR ARCHITECTURE; REVERSIBLE ADDITION-FRAGMENTATION CHAIN TRANSFER (RAFT); TETRAPHENYLPHOSPHONIUM SALTS; THIOACYL GROUP TRANSFER (TAGT);

PROPYLENE;

EID: 36349013233     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma071533w     Document Type: Article

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18. N2 reactive initiation for this polymerization (Scheme 1S). Namely, a halide anion nucleophilically attacks the methylene of PS and subsequently ring-opens PS to form a tetraphenylphosphonium thiolate. Furthermore, a formed thiolate with a tetraphenylphosphonium counter cation attacks the carbon of thiocarbonyl group in dithiocarbonyl compound to afford an oligomer inserted a PS moiety. Then, the oilgomer provides sequential insertion reaction of further PS to afford poly(PS).
19. This can be ascribed to the decreased electrophilicity of the dithiocarbamate moiety in the terminal end by the electron-withdrawing ability of the acrylamide moiety in the neighboring terminal end.