Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
mahw@dlut.edu.cn
收稿:2018-09-26,
修回:2018-11-19,
录用:2018-12-3,
网络首发:2018-12-29,
纸质出版:2019-09
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Citation: Yang, L. C.; Han, L.; Ma, H. W.; Liu, P. B.; Shen, H. Y.; Li, C.; Zhang, S. B.; Li, Y. Synthesis of alkyne-functionalized polymers via living anionic polymerization and investigation of features during the post-“thiol-yne” click reaction. Chinese J. Polym. Sci. 2019, 37, 841–850
Lin-Can Yang, Li Han, Hong-Wei Ma, et al. Synthesis of Alkyne-functionalized Polymers
Citation: Yang, L. C.; Han, L.; Ma, H. W.; Liu, P. B.; Shen, H. Y.; Li, C.; Zhang, S. B.; Li, Y. Synthesis of alkyne-functionalized polymers via living anionic polymerization and investigation of features during the post-“thiol-yne” click reaction. Chinese J. Polym. Sci. 2019, 37, 841–850 DOI: 10.1007/s10118-019-2203-6.
Lin-Can Yang, Li Han, Hong-Wei Ma, et al. Synthesis of Alkyne-functionalized Polymers
" Thiol-yne” click reaction has already been widely applied in synthesis and modification of new polymer structures or novel materials due to its specific features. However
in most studies
only chain-end strategy was employed when using the di-addition feature of thiol-yne reaction
thus the in-chain di-addition strategy could endow us with a broader space to develop the synthesis of advanced polymers. Therefore
in this paper
the features of in-chain mono- and di-addition were investigated when modifying the alkyne-functionalized polymers to prepare grafted polymers
via
thiol-yne click reaction. The results showed that it is almost impossible to obtain the in-chain di-adducts even under excess feeding of chain-end thiol-functionalized grafts
while only the in-chain mono-adducts could be obtained efficiently. Further researches investigated that the controlled grafting could be encountered when carrying out the thiol-yne click reaction between chain-end alkyne-functionalized polystyrenes and chain-end thiol-functionalized polystyrenes under proper feedings. Therefore
the effect of steric-hindrance might be the primary reason for the alternative grafting
via
thiol-yne click reaction between in-chain and chain-end alkyne-functionalized polymers.
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