Citation: Lin-Can Yang, Li Han, Hong-Wei Ma, Pi-Bo Liu, He-Yu Shen, Chao Li, Song-Bo Zhang, Yang Li. Synthesis of Alkyne-functionalized Polymers via Living Anionic Polymerization and Investigation of Features during the Post-“thiol-yne” Click Reaction[J]. Chinese Journal of Polymer Science, ;2019, 37(9): 841-850. doi: 10.1007/s10118-019-2203-6 shu

Synthesis of Alkyne-functionalized Polymers via Living Anionic Polymerization and Investigation of Features during the Post-“thiol-yne” Click Reaction

Department of Polymer Science and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China

Corresponding author: Hong-Wei Ma,
Received Date: 26 September 2018
Revised Date: 19 November 2018
Accepted Date: 1 January 2018
Available Online: 29 December 2018

" 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.
- Alkyne-functionalized polymers,
- In-chain di-addition,
- Thiol-yne click reaction,
- Living anionic polymerization
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