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Transition-metal-free controlled polymerization for poly(p-aryleneethynylene)s |
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| Authors: | Takanobu Sanji Asahi Motoshige Hideaki Komiyama Junko Kakinuma Rie Ushikubo Satoru Watanabe Tomokazu Iyoda |
| Institution: | a Iyoda Supra-Integrated Material Project (iSIM) , Exploratory Research for Advanced Technology (ERATO) , Japan Science and Technology Agency (JST) , Tokyo Institute of Technology , 4259-S2-3 Nagatsuta, Midori-ku , Yokohama 226-8503 , Japan . Email: |
| Abstract: | A transition-metal-free controlled polymerization for the attainment of poly(p-aryleneethynylene)s is developed. The polymerization of 1-pentafluorophenyl-4-(trimethylsilyl)ethynyl]benzene with a catalytic amount of fluoride anions proceeds in a chain-growth-like manner to afford polymers with controlled molecular weights and low polydispersity indexes. The mechanism involves a pentacoordinated fluorosilicate as a key intermediate. The anionic “living” nature of this process is applied to block copolymerization and also surface-terminated polymerization. |
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