a.Department of Materials-Oriented Chemical Engineering, School of Chemical Engineering, Fuzhou University, Fuzhou 350116, China
b.Qingyuan Innovation Laboratory, Quanzhou 362801, China
c.Fujian Key Laboratory of Advanced Manufacturing Technology of Specialty Chemicals, Fuzhou University, Fuzhou 350116, China
lxhou@fzu.edu.cn (L.X.H.)
xiaolq@fzu.edu.cn (L.Q.X.)
收稿:2021-04-27,
修回:2021-5-18,
录用:2021-5-22,
网络首发:2021-07-20,
纸质出版:2021-07-18
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Gao, D. N.; Zhao, Y. L.; Cai, J. Y.; Hou, L. X.; Xiao, L. Q. Reversible chain transfer catalyzed polymerization with alkyl iodides generated from alkyl bromides by in situ halogen exchange. Chinese J. Polym. Sci. 2021, 39, 1161–1168
Dan-Ni Gao, Yu-Lai Zhao, Jing-Yu Cai, et al. Reversible Chain Transfer Catalyzed Polymerization with Alkyl Iodides Generated from Alkyl Bromides by
Gao, D. N.; Zhao, Y. L.; Cai, J. Y.; Hou, L. X.; Xiao, L. Q. Reversible chain transfer catalyzed polymerization with alkyl iodides generated from alkyl bromides by in situ halogen exchange. Chinese J. Polym. Sci. 2021, 39, 1161–1168 DOI: 10.1007/s10118-021-2611-2.
Dan-Ni Gao, Yu-Lai Zhao, Jing-Yu Cai, et al. Reversible Chain Transfer Catalyzed Polymerization with Alkyl Iodides Generated from Alkyl Bromides by
Reversible chain transfer catalyzed polymerization (RTCP) is a practical and efficient process for the precise synthesis of polymers with special architecture by using simple phenols (2
4
6-trimethylphenol
TMP) or hydrocarbons (xanthene
XT) as efficient organocatalysts. Herein
alkyl iodide (R-I)
which was generated from
in situ
bromine-iodine transformation of alkyl bromide (R-Br) with sodium iodide (NaI)
was served as initiator to mediate RTCP with TMP or XT. MMA and other functional methacrylates
including GMA
DEAM
DMAEMA and BzMA
were successfully initiated by combining organocatalysts and azo initiators to yield polymers with low-polydispersity (
M
w
/
M
n
=1.1−1.5) and ideal monomer conversions (50%−90%) at moderate temperature. Moreover
3-armstar polymers were also obtained by this method. The high chain-end fidelity of the obtained poly(methyl methacrylate) with iodine as chain-end group (PMMA-I) was confirmed by chain-extension reaction. The environmentally friendly initiators and organocatalysts exhibit powerful polymerization properties toward RTCP
providing a significant method to synthesize functional polymers.
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