Citation: Lv, C. N.; Li, N.; Du, Y. X.; Li, J. H.; Pan, X. C. Activation and deactivation of chain-transfer agent in controlled radical polymerization by oxygen initiation and regulation. Chinese J. Polym. Sci. 2020, 38, 1178–1184 doi: 10.1007/s10118-020-2441-7 shu

Activation and Deactivation of Chain-transfer Agent in Controlled Radical Polymerization by Oxygen Initiation and Regulation

  • Corresponding author: Xiang-Cheng Pan, E-mail:
  • Received Date: 2020-03-06
    Available Online: 2020-06-05

Figures(5) / Tables(2)

  • The activation and deactivation of the chain-transfer agent were achieved by oxygen initiation and regulation with triethylborane under ambient temperature and atmosphere. The autoxidation of triethylborane overcame the oxygen inhibition and produced initiating radicals that selectively activate the chain-transfer agent for the chain growth or deactivate the active chain-end of polymer in controlled radical polymerization. Both activation and deactivation were highly efficient with broad scope for various polymers with different chain-transfer agents in both organic and aqueous systems. Oxygen molecule was particularly used as an external regulator to initiate and achieve the temporal control of both activation and deactivation by simply feeding the air.
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