期刊
MACROMOLECULES
卷 47, 期 4, 页码 1325-1333出版社
AMER CHEMICAL SOC
DOI: 10.1021/ma402559a
关键词
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资金
- National Science Foundation of China [21222402, 21174120]
- Ministry of Science and Technology of China [2013CB834702]
- Research Grants Council of Hong Kong [604711, 602212, HKUST2/CRF/10]
- Guangdong Innovative Research Team Program [201101C0105067115]
The thio-click polymerization is a well-expanded concept of click polymerization. Among the click polymerizations, the thiol-yne click polymerization is less developed and still in its infancy stage. In general, UV light, elevated temperature, amine, or transition metal complexes is needed to catalyze the thiol-yne click polymerization, which greatly complicates the experimental operation and limits its application. In this work, a facile and powerful thiol-yne click polymerization was developed, which could be carried out under very mild conditions without using external catalyst. Simply mixing the aromatic diynes (1a-1e) and dithiols (2-4) with equivalent molar ratio in THF at 30 degrees C will readily produce soluble and regioregular functional poly(vinylene sulfide)s (PIa-PIe, PII, and PIII) with high molecular weights (M-w, up to 85 200) in excellent yields (up to 97%) after as short as 2 h. Furthermore, no double addition product of an ethynyl group was found. This catalyst-free thiol-yne click polymerization has remarkably simplified the reaction conditions and will facilitate the preparation of functional materials applied in diverse areas.
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